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This case report aims to investigate the impact of zero Positive End-Expiratory Pressure (PEEP) on the respiratory parameters of a patient following atrial septal defect repair who requires mechanical ventilation. We present the case of a 33-year-old patient who had been experiencing recurrent chest infections accompanied by copious cough with greenish sputum since 2009, without experiencing shortness of breath. The patient had no significant childhood illnesses and had initially been treated with frequent antibiotics at a local health center, which did not lead to symptom improvement. Subsequently, the patient was referred to a tertiary level University Hospital and underwent a series of diagnostic investigations. Transesophageal echocardiography revealed a defect in the superior and posterior location of the interatrial septum, measuring approximately 16mm with left-to-right flow. This defect was situated at the insertion of the superior vena cava, consistent with a superior sinus venosus atrial septal defect. The examination also revealed a moderately dilated right atrium and mild-to-moderate tricuspid regurgitation. Consequently, the patient underwent intracardiac repair of the atrial septal defect on cardiopulmonary bypass. In light of the ongoing increase in symptoms, right ventricle remodeling, and pulmonary artery pressure as the patient ages, it is essential to consider recommencing atrial septal defect closure early after diagnosis, regardless of the presence of symptoms. [ABSTRACT FROM AUTHOR]

Background: Radiofrequency (RF) catheter ablation of para‐Hisian accessory pathways (APs) can be challenging due to proximity to the conduction system. Methods: A total of 30 consecutive patients with para‐Hisian AP were enrolled for ablation in three centers, 12 (40%) of whom had previously failed attempted ablation from the inferior vena cava (IVC) approach. Ablation was preferentially performed using a superior approach from the superior vena cava (SVC) in all patients. Results: The para‐Hisian AP was eliminated from the SVC approach in 28 of 30 (93.3%) patients. In the remaining two patients, additional ablation from IVC was required to successfully eliminate the AP. There were two patients experienced reversible complete atrial‐ventricular block and PR prolongation during the first RF application. Long‐term freedom from recurrent arrhythmia was achieved in 29 (96.7%) patients over a mean follow‐up duration of 15.6 ± 4.6 months. Conclusion: Catheter ablation of para‐Hisian AP from above using a direct SVC approach is both safe and effective, and should be considered especially in patients who have failed conventional ablation attempts from IVC approach. [ABSTRACT FROM AUTHOR]

Background: Patients undergoing surgical resection of brain tumors frequently exhibit a spectrum of hemodynamic fluctuations necessitating careful fluid management. This study aimed to evaluate the feasibility of dynamic predictors of fluid responsiveness, such as delta down (DD), aortic velocity time integral variability (VTIAoV), and superior vena cava collapsibility index (SVCCI), in patients undergoing neurosurgery for brain tumors. Methods: In this prospective study, 30 patients scheduled to undergo elective neurosurgery for brain tumor resection were enrolled. Baseline measurements of vitals, anesthetic parameters, and study variables were recorded post-induction. Subsequently, patients received a fluid bolus of 10 mL/kg of colloid over 20 min, and measurements were repeated post-loading. Data were presented as mean ± standard deviation. The normally distributed continuous variables were compared using Student's t-test, with P < 0.05 considered statistically significant. The predictive capability of variables for fluid responsiveness was assessed using Pearson's coefficient analysis (r). Results: Of the 30 patients, 22 were identified as volume responders (R), while eight were non-responders (NR). DD >5 mmHg effectively distinguished between R and NR (P < 0.001), with a good predictive ability (r = 0.759). SVCCI >38% differentiated R from NR (P < 0.001), with excellent predictability (r = 0.994). Similarly, VTIAoV >20% was also a good predictor (P < 0.05; r = 0.746). Conclusion: Our study revealed that most patients undergoing surgical resection of brain tumors exhibited fluid responsiveness. Among the variables assessed, SVCCI >38% emerged as an excellent predictor, followed by VTIAoV >20% and DD >5 mm Hg, for evaluating fluid status in this population. [ABSTRACT FROM AUTHOR]

Background: Antiphospholipid syndrome is a complex autoimmune condition associated with the formation of recurrent thrombosis in any vascular bed throughout the body. Jugular vein thrombosis is very rare with only a 0.9% occurrence and is not typically associated with cerebrospinal rhinorrhea as a result of raised intracranial pressure. Case Description: A 54-year-old patient presented with a 9-month history of cerebrospinal fluid (CSF) rhinorrhea and headache on a background of antiphospholipid syndrome. Investigations showed a superior vena cava (SVC) and right internal jugular vein (IJV) obstruction with moderately elevated intracranial venous pressures. Her magnetic resonance imaging (MRI) brain was consistent with a CSF leak. The patient underwent successful endovascular stenting of her obstructed SVC and right IJV followed by surgical repair of a herniating meningocele in the posterior left ethmoid air cells. Conclusion: CSF rhinorrhea is uncommon and never previously reported associated with SVC thrombosis induced by antiphospholipid syndrome. A combination of endovascular techniques and surgical repair is recommended for this challenging presentation. [ABSTRACT FROM AUTHOR]

The appearance of sclerotic bone lesions in contrast-enhanced computed tomography (CT) scans is often a significant concern for the possible presence of metastatic disease, especially in individuals with a known history of cancer. Prior research has demonstrated that in cases where patients suffer from thrombosis in major veins like the superior vena cava or the brachiocephalic vein, vertebral venous congestion can create imaging patterns on CT scans that resemble sclerotic bone metastases. However, instances of such imaging findings in patients without any form of venous obstruction are not commonly reported. In this study, we present cases of pseudopathologic vertebral enhancement observed consistently following left-side contrast injections in cancer patients devoid of venous obstruction. We aim to discuss and propose a potential mechanism for this phenomenon, drawing attention to a less commonly recognized diagnostic consideration in oncological imaging. [ABSTRACT FROM AUTHOR]

Background A cardiac hibernoma is a rare phenomenon, with just a handful of reports in the literature. They are difficult to characterize with conventional imaging including echocardiography, computed tomography (CT), cardiac magnetic resonance (CMR), or positron emission tomography (PET). Their definitive diagnosis relies primarily on histopathology via either endovascular or surgical biopsy. Previous case reports have entailed surgical excision followed by histopathology; however, surgery may be unfavourable in some patients with increased perioperative risk. Case summary We present the case of a 57-year-old woman who was referred to our cardiology service with an interatrial lipomatous mass found incidentally on chest CT for assessment of rib fractures. She had 6 months of unexplained syncope, which was attributed to superior vena cava (SVC) compression demonstrated by chest CT. The mass had benign characteristics on echocardiography, CT, and CMR but was glucose-avid on PET, which indicated a possible malignancy such as liposarcoma. Her comorbid and very significant airways disease precluded her from surgical excision, so instead, endovascular biopsy was performed. Histopathology showed brown fat which was negative for mouse double minute 2 amplification on fluorescence in situ hybridisation testing; hence, a diagnosis was made of hibernoma, a rare benign tumour of brown fat. Given the benign diagnosis and her surgical risk with severe chronic obstructive pulmonary disease, a multidisciplinary recommendation was made favouring conservative management, with careful ongoing follow-up and the consideration of SVC stenting if symptoms progressed. Discussion The definitive diagnosis of a cardiac hibernoma is complex and relies heavily on histopathology due to the contradictory findings on chest imaging. Careful consideration of management within a multidisciplinary team setting is essential to achieve a successful outcome. [ABSTRACT FROM AUTHOR]

Background: Pulmonary embolism (PE) is a critical cardiovascular and pulmonary derangement and third most common cause of cardiovascular death. PE is a "great masquerader" because of non-specific presentation. In patients with suspected pulmonary embolism (PE) CT-pulmonary angiography (CTPA) is frequently performed and its relationship with Qanadli score (QS/clot burden score) assists the clinicians in early diagnosis and management. Our study highlights to determine the correlation between Q-score and parameters of right ventricular dysfunction (RVD) on CTPA in patients with acute pulmonary embolism. Materials and Methods: A prospective observational study done on 100 patients with radiologically confirmed diagnosis of PE in department of radiodiagnosis at SMS Medical College, Jaipur, rajasthan during one year period. Total of hundred (100) patients with radiologically confirmed diagnosis of PE were included whose clinical details, Q-score and RVD parameters [Right ventricle/left ventricle diameter (RV/LV) ratio, interventricular septum morphology, Superior vena cava (SVC) diameter, Azygos vein diameter, pulmonary artery/aorta diameter (PA/Ao) ratio and IVC reflux were recorded. Correlation between QScore and RVD parameters were determined, and logistic regression analysis was applied to assess Q-score as a predictor of RV-dysfunction. Results: A strong positive correlation was found between Q-score and RV/LV ratio, bowing of interventricular septum (r>0.7, p<0.05). Positive correlation between Q-score and PA/Ao ratio, SVC diameter, azygos vein diameter was also there after gender and age-based stratification. No significant correlation was found between Q-score and IVC reflux. ROC curve for QS showed a cut-off of 15 to precisely predict RVD. Conclusion: Qanadli score (QS) =15 correlates well with indicators of right ventricular dysfunction of CTPA in patients with acute pulmonary embolism and confers a poor prognosis with higher Q-scores. [ABSTRACT FROM AUTHOR]

Objective: To determine the usefulness and safety of transthoracic echocardiography (TTE) imaging for real time guidance in transcatheter device closure of atrial septal defect (ASD) secundum. Study Design: Cross-sectional study. Setting: Department of Paediatric Cardiology, CPEIC, Multan, Pakistan. Period: January 2022 to December 2023. Material & Methods: Patients of both genders aged above 3 years with clinical and echocardiographic evidence of ASD secundum with significant left to right shunt were analysed. All cases had morphologically suitable margins of defect confirmed on TTE. Usefulness and safety of intra-procedure and immediate post-procedure transcatheter device closure of secundum ASD were noted. Results: In a total of 34 patients, 20 (58.8%) were female and 14 (41.2%) male. The mean age was 21.32±17.21 years. The TTE findings revealed that the mean ASD side was 17.47±4.32 mm. Aortic margins were deficient among 28 (82.4%) cases. The mean fluoroscopy and procedure time were 9.29±6.98 minutes and 49.91±39.76. Residual leak was noted in one (2.9%) cases while none of the cases were observed to have superior vena cava, inferior vena cava or pulmonary vein obstructions. Post-procedure, transient supraventricular tachycardia (SVT) arrhythmia was the most common type of complication reported among 2 (5.9%) cases. None of the cases needed any kind of emergency surgical exploration. No cases of pericardial effusion were found. No mortality was reported. Conclusion: Transcatheter device closure of secundum atrial septal defect was found to be effective and safe using TTE. [ABSTRACT FROM AUTHOR]

Introduction: Treatment of recurrent atrial fibrillation (AF) is sometimes challenging due to non‐pulmonary vein (PV) foci. Fractionated signal area in the atrial muscle (FAAM) is a valid predictor of the location of non‐PV foci. FAAM ablation has the potential to decrease the recurrence rate of atrial tachyarrhythmia in patients with recurrent AF. We compared the clinical impact of FAAM ablation for recurrent AF, using 1 year follow up date. Methods: A total of 230 consecutive patients with symptomatic recurrent AF who underwent catheter ablation specifically targeting non‐PV foci as FAAM‐guided ablation (n = 113) and non‐FAAM‐guided ablation (n = 117) were retrospectively analyzed. FAAM was assigned a parameter (peaks slider, which indicates the number of components of fractionated signals), ranging from 1 to 15, indicating the location of the FAAM (1: largest, 15: smallest). FAAM‐guided ablation was performed by ablating FAAM until none inducibility of non‐PV foci. On the other hand, non‐FAAM‐guided ablation was performed via linear ablation, complex fractionated atrial electrogram ablation, superior vena cava isolation, and focal ablation according to the location of the non‐PV foci. The RHYTHMIA system was used to perform all the procedures. The primary endpoints were AF recurrence, atrial flutter, and/or atrial tachycardia. Results: After a 1‐year follow up, freedom from atrial tachyarrhythmia was achieved in 90.3% and 75.2% of patients in the FAAM and non‐FAAM groups, respectively (hazard ratio = 0.438 [95% confidence interval: 0.243–0.788], p =.005). Conclusions: FAAM ablation showed a promising decrease in the recurrence rate of atrial tachyarrhythmia in patients with recurrent AF during a 1‐year follow‐up. [ABSTRACT FROM AUTHOR]

Background: Superior vena cava syndrome is rarely attributed to chronic obstructive pulmonary disease. Case presentation: We present the case of an 82-year-old Japanese man who experienced gradually progressive dyspnea on exertion. His physical examination revealed small vascular dilatations on his chest and upper abdominal skin characterized by blood flow from head to leg, indicating superior vena cava syndrome. Radiographic findings included lung hyperinflation with a drop-like heart on chest X-ray, and emphysematous changes on computed tomography. The superior vena cava appeared extremely narrow and slit-like, with no adjacent mass or giant bulla. Pulmonary function testing indicated a forced expiratory volume in 1 second of 0.82L (44.4% of predicted value) and a forced expiratory volume in 1 second/forced vital capacity of 31.29%. A diagnosis of chronic obstructive pulmonary disease was made. We discuss how longitudinal forces can narrow the superior vena cava, particularly when it protrudes toward the lung field due to its anatomical location in the upper mediastinum. The absence of mediastinal adipose tissue may render the superior vena cava susceptible to compression, resulting in a loss of its typical columnar structure. The protrusion of the superior vena cava toward the lung field may be a contributing factor to superior vena cava narrowing in chronic obstructive pulmonary disease. Conclusion: This case represents the first reported instance of superior vena cava syndrome associated with chronic obstructive pulmonary disease, characterized by lung hyperinflation, in the absence of a giant bulla. [ABSTRACT FROM AUTHOR]

Our objective was to use interpretable machine learning for choosing dose-volume constraints on cardiopulmonary substructures (CPSs) associated with overall survival (OS) in radiation therapy for locally advanced non-small cell lung cancer. A total of 428 patients with non-small cell lung cancer were randomly divided into training/validation/test subsets (n = 230/149/49) in Radiation Therapy Oncology Group 0617. Manual or automated contouring was performed to segment CPSs, including heart, atria, ventricles, aorta, left/right ventricle/atrium (LV+RV+LA+RA), inferior/superior vena cava, pulmonary artery, and pericardium. Peri (pericardium-heart), rest (heart-[LV+RV+LA+RA]), clinical target volume (CTV), and lungs-CTV contours were also obtained. Dose-volume histogram features were extracted, including minimum/mean dose to the hottest x% volume (Dx%[Gy]/MOHx%[Gy]), minimum/mean/maximum dose, percent volume receiving at least xGy (VxGy[%]), and overlapping volume of each CPS with planning target volume (PTV_Voverlap[%]). Clinical parameters were collected from the National Clinical Trials Network/Community oncology research program data archive. Feature selection was performed using a series of multiblock sparse partial least squares regression, stability selection supervised principal component analysis, and Boruta. Explainable boosting machine (EBM) was trained using a conditional survival distribution-based approach for imputing censored data, treating survival analysis as a regression problem. Harrell's C-index was used to evaluate OS discrimination performance of EBM, Cox proportional hazards (CPH), random survival forest, extreme gradient boosting survival embeddings, and CPH deep neural network (DeepSurv) models in the test set. Dose-volume constraints were selected using the binary change point detection algorithm in Shapley additive explanations–based partial dependence functions. Selected features included LA_V60Gy(%), pericardium_D30%(Gy), lungs-CTV_PTV_Voverlap(%), RA_V55Gy(%), and received_cons_chemo. All models ranked LA_V60Gy(%) as the most important feature. EBM achieved the best performance for predicting OS, followed by extreme gradient boosting survival embeddings, random survival forest, DeepSurv, and CPH (C-index = 0.653, 0.646, 0.642, 0.638, and 0.632). EBM global explanations suggested that LA_V60Gy(%) < 25.6, lungs-CTV_PTV_Voverlap(%) < 1.1, pericardium_D30%(Gy) < 18.9, RA_V55Gy(%) < 19.5, and received_cons_chemo = 'Yes' for improved OS. EBM can be used to discriminate OS while also guiding dose-volume constraint selection for optimal management of cardiac toxicity in lung cancer radiation therapy. [ABSTRACT FROM AUTHOR]

Background: Anterior mediastinal masses (AMMs), which can be benign or malignant, are a common cause of superior vena cava (SVC) syndrome. Because of their location, AMMs can cause significant airway compromise during the perioperative period, so anesthetic management of a patient with SVC syndrome can present significant challenges. Case Report: A patient presented with SVC syndrome secondary to a large AMM. After careful consideration and discussion with the patient about the risks and benefits of various approaches, the decision was made to provide sedation using dexmedetomidine as the sole agent during image-guided biopsy. Conclusion: Patients who present with AMMs require careful anesthetic planning. Dexmedetomidine can be effective in achieving the primary objective of maintaining spontaneous respiration. [ABSTRACT FROM AUTHOR]

Key Clinical Message: Autoimmune pancreatitis (AIP) is a form of chronic pancreatitis scarcely found in children. Raghib syndrome is a rare congenital heart defect known as persistent left superior vena cava (LSVC) draining into the left atrium. Total signs of Raghib syndrome in AIP case accompanied by an IgG4‐related disease were described. Autoimmune pancreatitis (AIP) is a form of chronic pancreatitis scarcely found in children. Raghib syndrome is a rare congenital heart defect known as persistent left superior vena cava (LSVC) draining into the left atrium. Here, we describe Raghib syndrome in AIP case accompanied by an IgG4‐related disease (AIP/IgG4RD). A 13‐year‐old boy presented with a 3‐month history of fever and abdominal pain. The laboratory findings showed SGOT and SGPT, ALP was increased, while amylase and γ‐GT were normal. Immunoglobulins were normal, except for IgG. Endosonography, spiral CT of the abdomen, and cholangiopancreatography showed an enlargement of the pancreas. Contrast echocardiography discovered opacification of the coronary sinus and left atrium. Transesophageal echocardiography for LSVC revealed a dilatation in the coronary sinus, indicating persistent LSVC. Following the injection of agitated saline into the left antecubital vein, bubbles entered both left and right atria in LSVC. It is reasonable to exclude some of these rare disorders as Raghib syndrome, in cases that will be started on medications like corticosteroids, which increases the susceptibility to thromboembolic events. [ABSTRACT FROM AUTHOR]

Introduction: Transvenous pacemaker implantation in patients post bidirectional Glenn anastomosis in one‐and‐a‐half ventricle repair is usually not feasible. However, with a modified surgical technique for Glenn anastomosis and a combined interventional and electrophysiologic approach, the transvenous pacemaker was successfully implanted. Findings and Conclusions: We reported a novel technique of pacemaker implantation in a 27‐year‐old woman, underlying Ebstein anomaly of the tricuspid valve, who developed intermittent complete atrioventricular block at 5 years after surgical repair. The patient had a tricuspid valve replacement and a novel modified bidirectional Glenn anastomosis for one‐and‐a‐half ventricle repair. The Glenn circuit was conducted by opening a window between the posterior wall of the superior vena cava (SVC) and the anterior wall of the right pulmonary artery (RPA), combined with putting a Goretex membrane in the SVC below the SVC‐RPA window without disconnecting the SVC from the right atrium. The transvenous pacemaker was implanted by perforating the Goretex membrane, then passing the leads from the axillary vein through the perforated membrane and placing them in the coronary sinus and right atrium. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate the diagnostic efficacy of contrast‐enhanced ultrasonography (CEUS) for detecting catheter‐related right brachiocephalic vein (RBV) and superior vena cava (SVC) obstructions in patients undergoing hemodialysis (HD). Methods: From June 1, 2021 to December 31, 2022, we enrolled 80 patients undergoing HD who had used or were using a central venous catheter as vascular access. We evaluated the diagnostic efficacy of conventional ultrasonography and CEUS for identifying RBV and SVC obstructions and compared them with that of digital subtraction angiography (DSA). In the stratified analysis, the SVC was divided into the upper and lower segments. In total, we analyzed 240 central venous segments, including the RBV. Results: Among the RBV and SVC visualized by DSA, conventional ultrasonography and CEUS could visualize 67.92 and 100% of the vein segments, respectively; however, the lengths and diameters of the RBV and SVC were smaller than those recorded with DSA (P <.001). The diagnostic efficacy of CEUS for detecting catheter‐related central venous obstruction was better than that of conventional ultrasonography, with a higher sensitivity (83.95 vs 41.98%), specificity (89.94 vs 53.46%), accuracy (87.92 vs 49.58%), and F1 score (82.42 vs 49.64%). CEUS showed good agreement (κ = 0.732) with DSA. In the stratified analyses, CEUS also showed higher sensitivity (83.93, 83.33, and 84.62%, respectively) and better agreement with DSA (κ = 0.635, 0.655, and 0.673, respectively) than conventional ultrasonography for detecting the RBV and the upper and lower segments of the SVC. Conclusions: CEUS had high sensitivity and specificity in diagnosing catheter‐related RBV and SVC obstructions. [ABSTRACT FROM AUTHOR]

The article presents a case study of a 27-year-old woman presenting with progressive dyspnea, thoracic pain, hemoptysis, presyncope, and exertional cough. It mentions evaluation revealed congenital anomalies, including interruption of the right pulmonary artery, leading to cardiovascular limitations during exercise, as evidenced by reduced maximal oxygen consumption and abnormal cardiopulmonary exercise test results.

Background Defibrillation threshold (DFT) testing is done to assess whether proper sensing of ventricular fibrillation and adequate safety margin for defibrillation are present in an implantable cardioverter defibrillator (ICD). This case report presents an intuitive method for lowering the DFT. It may be used on a larger scale in other patients with high DFTs when other methods for lowering the DFT (changing medications, adjusting the device, and adding coils) are not feasible or preferable to use. Case summary A 64-year-old male presented to the emergency room with failed appropriate shocks from his ICD. Device interrogation revealed that he failed his first maximum output shock before subsequent shock at the same polarity and output succeeded, suggesting a high DFT. Therefore, the DFT needs to be lowered in our patient. After considering the potential efficacy and risk of a number of traditional options, we used an intuitive method whereby the right ventricular (RV) coils of two separate leads were combined via a y-adapter. This method successfully lowered the patient's DFT, and he received successful shocks from his ICD over the next 9 months before reaching end-stage heart failure. He received a transplant, and the device and transvenous leads, except for the superior vena cava coil, were successfully removed. Discussion Combining two RV coils from different locations may lower the DFT. This method may be considered in the larger population in cases where using traditional methods are not safe or possible for certain patients. This method may work by lowering shock impedance and increasing the shock tissue surface area. [ABSTRACT FROM AUTHOR]

This article discusses the impact of topology on the number of loops during macro-re-entrant atrial tachycardia (MRAT). The authors propose a novel theory called the paired loop paradigm, which suggests that the number of loops in MRAT is dependent on the number of holes on the closed surface of the atrium. They conducted simulations and analyzed clinical cases to support their hypothesis. The authors also developed software called DGM-TOP to automatically detect true and suppressed loops. They received an ERC proof-of-concept grant to further test their hypothesis and enhance their software. The ultimate goal is to integrate this approach into existing mapping systems to improve ablation therapy. [Extracted from the article]

A 50‐year‐old woman underwent catheter ablation for atrial fibrillation. Preoperative computed tomography revealed a left‐sided variant of the right top pulmonary vein (PV) and a persistent left superior vena cava. The right top PV was successfully isolated through a wide antral circumferential ablation line simultaneously with the right PVs. [ABSTRACT FROM AUTHOR]

Background: The persistent left superior vena cava (PLSVC) is an infrequent vascular variant. PLSVC with absent right superior vena cava, also known as isolated PLSVC, is an exceptionally rare entity. In this case we present a patient with isolated PLSVC draining to coronary sinus, diagnosed incidentally during echocardiography. Case presentation: A 35-year-old man underwent a transthoracic echocardiography which showed an enormously dilated coronary sinus. Hand-agitated saline was injected via peripheral intravenous cannulas. The contrast appeared firstly in the coronary sinus before it opacified the right atrium. Since this was also visible by the right antecubital saline injection, it indicated an extremely rare case of PLSVC with the absence of right superior vena cava which was confirmed by cardiac magnetic resonance. Conclusions: The finding of a distinctively dilated coronary sinus in echocardiography led us to further investigation using agitated saline that revealed an infrequent anomaly termed isolated PLSVC. The in-depth diagnosis of this vascular variant is crucial considering that it may lead to important clinical implications, such as difficulties with central venous access, especially in the current era of a rapid development of cardiac device therapies. [ABSTRACT FROM AUTHOR]

This article discusses the use of virtual reality (VR) software in aiding the precise closure of sinus venosus defects using covered stents without the need for 3D printing. The article explains that complex stenting procedures require precise positioning and expansion of stents, which can be achieved through VR simulations. The case report presented in the article describes the successful closure of a sinus venosus defect using a covered stent, with guidance from computed tomographic images and the VMersive VR platform. The article concludes by acknowledging the introduction of the VMersive platform to the department and stating that there are no competing interests or funding involved. [Extracted from the article]

The knowledge of different anatomic venous variants of central vessels is essential to improve the safety of procedures like central venous access and tunneled central catheter (TCC) placement. Persistent left superior vena cava (PLSVC) is an uncommon variant seen in 0.5 to 2% of common population, in 80 to 90% of which PLSVC commonly drains into the right atrium (RA) via the coronary sinus. We describe a rare case of PLSVC draining into RA through common channel with suprahepatic inferior vena cava, encountered while placing TCC into left internal jugular vein. This report highlights the radiological findings and the implications of this anatomic anomaly. [ABSTRACT FROM AUTHOR]

We report a case of atrial fibrillation (AF) recurrence after pulmonary vein isolation, which patient had AF trigger in the superior vena cava (SVC) near the sinus node (SN). The ultra‐high‐resolution mapping revealed that SN located within the SVC and the atrial activation from the SN to SVC propagated in both septal and lateral direction, then upward with circumventing the spontaneous conduction block identified just above and lateral SN (upper hemisphere). We successfully isolated SVC including the ectopic origin at the same level as the SN by utilizing the spontaneous conduction block line around the SN without any complication. [ABSTRACT FROM AUTHOR]

Introduction: Pulsed field ablation (PFA) is a nonthermal ablative strategy that achieves cell death via electroporation. Herein, we investigated the preclinical safety and efficacy of PFA using two novel 8‐French, 16‐electrode spiral PFA/mapping catheters (ElePulse; CRC EP, Inc.). Methods: Bipolar PFA (>1.8 kV) was performed using 30 s, single‐shot, QRS‐gated applications. Altogether, 94 atrial structures were ablated in 23 swine, one canine, and one ovine, including right and left atria and atrial appendages, pulmonary veins, and superior and inferior (IVC) vena cavae. We also examined the impact of PFA on the phrenic nerve (14 swine) and on a deviated esophagus after delivery of PFA from inside the IVC (five swine). Results: All applications were single‐shot without catheter repositioning. Minimal microbubbling was observed without significant skeletal muscle twitching/activation (mean acceleration: 0.05 m/s2). There was a marked reduction in post‐PFA versus pre‐PFA atrial electrogram amplitude (0.17 ± 0.21 vs. 1.18 ± 1.08 mV; p <.0001). Lesion durability was demonstrated up to 3 months in all targeted tissues. Histologically, lesions were contiguous and transmural, except in the atrial appendage, and without any thermal effects. Magnetic resonance, gross, and histologic examinations of the brain, rete mirabile, and kidneys revealed no thromboembolism. No acute/long‐term phrenic nerve dysfunction was encountered. Although within 2 h of ablation, histologic examinations of the esophagus revealed acute PFA‐related changes in the muscular layer, these completely resolved by 21 ± 5 days. Conclusion: A novel, single‐shot, spiral PFA system is capable of safely creating large, durable atrial lesions without significant adverse effects on the phrenic nerve or the esophagus. [ABSTRACT FROM AUTHOR]

The most encountered anomalous systemic venous drainage is a persistent left superior vena cava that drains into the right atrium through the coronary sinus. A much rarer anomalous systemic venous drainage is that of isolated anomalous drainage of a normally positioned right superior vena cava (RSVC) into the left atrium (LA). This has been reported in approximately 20 patients, with the diagnosis usually made by cardiac catheterization. We report the youngest case diagnosed at the age of 3 h after birth with hypoxemia resulting from anomalous drainage of a normal RSVC into the LA. This was diagnosed noninvasively by echocardiography and confirmed by cardiac computed tomography angiography. [ABSTRACT FROM AUTHOR]

Primary mediastinal large B-cell lymphoma (PMBCL) is a rare, non-Hodgkin, B-cell lymphoma thought to originate from thymic B cells, which occurs primarily in young adults such as in the active duty population. Primary mediastinal large B-cell lymphoma (PMBCL) presents as a large mediastinal mass, posing risks to the cardiopulmonary safety of patients and challenging the routine approach to diagnosis. We describe a case of a 23-year-old male sailor who presented to sick call on his ship while in port with shortness of breath, night sweats, 50-pound weight loss, and pruritic punched-out lesions on all extremities. An initial chest X-ray showed a large consolidation. After being seen in the pulmonary medicine clinic 5 weeks after his initial presentation, the patient was admitted to the intensive care unit after computed tomography of his chest revealed a mediastinal mass, causing compression of both the right bronchus and superior vena cava with a large pericardial effusion. Empiric high-dose dexamethasone was initiated before a formal diagnosis due to his significant risk for cardiopulmonary compromise. Following diagnosis and two cycles of chemotherapy, the patient was transferred to a medical oncology facility in the continental USA. This case demonstrates the need to educate all military providers to recognize the presentation of mediastinal masses in active duty service members and the importance of urgently escalating these patients to higher levels of care in order to avoid life-threatening complications. [ABSTRACT FROM AUTHOR]

Introducion: Renal cell carcinoma (RCC) is one of the most prevalent malignant tumors. It extends up into the systemic veins and right atrium. Surgical extraction of such extensions is usually carried out using cardiopulmonary bypass (CPB) with moderate hypothermic (MH) being frequently applied in order to obtain a clear surgical field. However, due to obvious disadvantages of hypothermia, approaches with mild/normothermia (NT) during CPB have also been established. The current study aims to compare the outcomes of patients undergoing RCC tumor and extensions resection using MH versus NT. Material and Methods: This is a retrospective, non-randomized study. All patients who underwent RCC tumor and extensions resection for stage III or IV (Staehler) RCC in a single center between 2006 and 2020 were included. During surgery, MH or NT were applied. CPB was realized using aortic and bicaval cannulation. We compared the procedural times, transfusion requirements and postoperative outcomes, respectively between the MH and NT groups. Results: A total of 24 consecutive patients (n(NT) = 12, n(MH) = 12) were included in the study (median age NT 68.5 and MH 66.5). The study only showed a significant difference in heart-lung machine times (median CPB time NT 45.5 min and MH 110.0 min, p = 0.004). All other results, loss of drainage, administration of blood products, as well as the postoperative course and mortality were comparable in both groups. Conclusion: The results showed a high perioperative and long-term mortality. The perioperative course was similar after surgery with NT or MH. Therefore, NT which minimizes potential complications of MH should be preferred. [ABSTRACT FROM AUTHOR]

Background: Persistent left superior vena cava (PLSVC) is the most prevalent form of thoracic venous abnormality and can serve as a significant arrhythmogenic source in atrial fibrillation (AF). Methods and results: Among the 3950 patients who underwent radiofrequency ablation for AF between September 2014 to April 2020, 17 patients (mean age 59.4 ± 8.0 years, 64.7% male) with PLSVC were identified. Among them, nine patients (52.9%) had a prior history of pulmonary vein isolation (PVI) alone. Eight out of nine patients who experienced AF recurrence underwent PLSVC isolation with or without pulmonary vein (PV) reconnection. For the remaining eight patients (47.1%), PVI plus PLSVC isolation were performed during the index procedure. Ectopy originating from PLSVC was documented in 11 patients (64.7%) and successful PLSVC isolation was achieved in 16 patients (94.1%). After a median follow‐up of 28.3 months, freedom from AF/ atrial tachycardia (AT) was observed in 13 patients (76.5%). Conclusion: Empirical PLSVC isolation beyond PVI appears to be a feasible and safe strategy to prevent AF recurrence in patients with concomitant PLSVC. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the changes in the diameters of superior vena cava (SVC) and inferior vena cava (IVC) and to measure the ratio between SVC and IVC in growth‐restricted fetuses and compare these results with normally grown fetuses. Methods: Twenty‐three consecutive patients with fetal growth restriction (FGR) (Group I) and 23 pregnant gestational age‐matched controls (Group II) between 24 and 37 weeks of gestation were enrolled in the study between January 2018 and October 2018. The diameter of the SVC and IVC from inner wall to inner wall was measured in all patients by sonographic examination. The ratio between the diameter of the SVC and IVC was also measured in each patient to eliminate the gestational age factor. We have named this ratio the "vena cava ratio" (VCR). All parameters were compared between the two groups. Results: The diameter of the SVC was significantly greater in the fetuses with FGR (2.6–7.7 [5.4]) than in controls (3.2–5.6 [4.1]; P =.002; P <.01). The diameter of the IVC was significantly less in the fetuses with FGR (1.6–4.5 [3.2]) than in controls (2.7–5 [3.7]; P =.035; P <.05). The VCR was between 1.1 and 2.3 and the median value was 1.8 in Group I. The VCR was between 0.8 and 1.7 and the median value was 1.2. VCR was significantly higher in fetuses with FGR (P =.001 P <.01). Conclusion: This study shows that VCR is higher in fetuses with growth restriction. Further studies are needed to clarify the association between VCR and antenatal prognosis and postnatal results. [ABSTRACT FROM AUTHOR]

The article delves into a medical case involving a patient with pulmonary embolism and severe hypoxemia, identifying a challenging right-to-left intracardiac shunting issue through a patent foramen ovale (PFO). Topics include refractory hypoxemia in acute-on-chronic submassive pulmonary embolism, the challenges in determining the primary cause of hypoxemia, and therapeutic strategies, such as transient PFO closure, for patients facing similar conditions.

Background: Transvenous laser lead extraction (TLE) for cardiac implantable electric devices (CIED) is a challenging procedure especially if performed in octogenarians. In this study we evaluated the safety and efficacy of transvenous laser lead extraction in elderly patients. Methods: This is a retrospective study of octogenarian patients who underwent laser-assisted lead extraction (LLE) (GlideLight laser sheath, Philips, San Diego, USA). 270 Consecutive patients were included. Patients were divided into two groups. Octogenarian group and non-octogenarian group. The Data was gathered from patients treated between September 2013 and January 2020 and is retrospectively analyzed. Results: Of 270 consecutive patients, 38 (14.0%) were 80 years old or more. The total number of the extracted leads was 556 among which 84(15.0%) from the Octogenarian group. From these leads were 155 single coil leads, 82 dual coil leads, 129 right ventricular pacing leads, 155 right atrial leads, and 35 left ventricular leads. In the Octogenarian group the number of removed leads was as follows: 13 single coil leads, 10 dual coil leads, 28 right ventricular pacing leads, 28 right atrial leads and 5 left ventricular leads. No mortality was recorded in the Octogenarian group. One patient in the YG suffered from a superior vena cava tear and one patient suffered from pulmonary embolism. Conclusion: In octogenarian laser assisted lead extraction patients is a safe and effective procedure. No increase in morbidity, mortality or perioperative complication could be recorded in this group. Age should not be a limiting factor to perform this procedure. [ABSTRACT FROM AUTHOR]

Lymphoedema is thought to affect around 200 000 people in the UK (NHS England, 2023). Secondary lymphoedema is a relatively common complication of cancer and cancer treatment, and in advanced disease it may present a challenging issue for community nursing staff caring for patients approaching the end of their lives. In this article, a case study considers the assessment and treatment of upper limb lymphoedema in a patient with advanced metastatic breast cancer. Management of this complex and distressing condition requires holistic assessment and collaborative care planning with the patient and their wider care team, including onward referral to specialist lymphoedema and palliative care services. The case study considers the typical presentation of lymphoedema in an upper limb, exclusion of reversible causes for oedema, awareness of palliative care emergencies such as superior vena cava obstruction, and the provision of supportive therapeutic interventions in context of the patient's expressed wishes for her ongoing care. [ABSTRACT FROM AUTHOR]

Background: The study aimed to elucidate the clinical application significance of prospective ECG-gated dual-source CT in central venous (CV) imaging. Materials and Methods: Eighty patients who took CT imaging of CV (CTV) check using dual-source Force CT were enrolled. The control group (helical pitch, 0.8; rotation speed, 0.5 s) and the experimental group (rotation speed, 0.25 s). For both groups, image quality and radiation dose were computed. Results: Cases in the experimental group required longer scanning durations than those in the contro lgroup. In respect to the experimental group, the image quality scores of the superior vena cava and left and right brachiocephalic veins of the patients sharply increased relative to those in the control group. Individuals in the experimental group also presented better image quality scores in left and right subclavian veins, left and right jugular veins, however, this difference was not statistically significant. Lastly, no increase in the radiation dose was bited with the application of prospective ECG gating. Conclusion: The clinical use of prospective ECG-gated technology significantly reduced cardiovascular pulsing artifact interference on the central vein, especially the superior vena cava segment, and remarkably improved the image quality without increasing the radiation dose to patients. [ABSTRACT FROM AUTHOR]

Device closure has become the preferred procedure for treating oval fossa defects in the last two decades. More recently, transcatheter sinus venosus defect (SVD) closure has emerged as an alternative to surgery. Transcatheter stenting aims to overcome potential late surgical complications such as stenosis of the superior vena cava (SVC) and right upper pulmonary vein (RUPV), as well as sinus node dysfunction. Balloon interrogation of the cavoatrial junction is able to identify patients who are suitable candidates for nonsurgical closure. Successful closure is possible when the balloon seals the SVD and redirects the RUPV towards the left atrium. Oval fossa (secundum) defects can coexist in approximately 9–16% of patients with SVD. Among a group of 80 patients who underwent transcatheter closure of SVD, five adult patients aged between 22 and 52 years also required device closure of an associated oval fossa defect. The procedure involved simultaneous balloon interrogation of both the SVD and oval fossa defect, with continuous monitoring of the RUPV using bilateral femoral venous sheaths. Covered stent exclusion of the SVD was performed with concurrent device closure of the oval fossa defect using 12–36 mm atrial septal occluders. During the procedure, two patients required protective balloon inflation in the RUPV while expanding the covered stent. In one patient, a higher small accessory RUPV was intentionally left to drain into the SVC through the struts of a bare stent anchoring the covered stent in the upper SVC. In another patient, a second overlapping covered stent was used to address residual flows from a fabric tear that became apparent after balloon deflation. There were no vascular complications and only one patient exhibited an insignificant 6 mm residual flow from the caudal edge of the SVD during a follow-up of 5 to 72 months. In conclusion, the closure of both SVD and associated oval fossa defects can be successfully performed in a single procedure, with comparable procedural times and favourable mid-term outcomes. [ABSTRACT FROM AUTHOR]

Background: The tissue response viewer (TRV) is a novel marker for ablation lesion quality that aims to classify lesions into transmural or nontransmural lesions (high or low dielectric response, HDR or LDR) using dielectric‐based tissue assessment. The objective of this study was to gain insight in the TRV by relating its outcomes to conventional ablation parameters. Methods: Patients that had repeat ablation for atrial fibrillation with a dielectric imaging‐based mapping system were enrolled. All ablation data were downloaded from the mapping system and analyzed to explore associations between TRV outcomes and other ablation parameters. Results: The cohort included 24 patients, in which 58 pulmonary veins and 8 superior vena cavas were targeted. A total of 388 energy applications were applied, resulting in 639 ablation points. The system classified 36% of ablation points as HDR and 44% as LDR. The system did not provide a dielectric response in 20%. The system's ability to provide a dielectric response was related to longer ablation duration and absence of dragging ablation. HDR (versus LDR) was multivariably associated with longer energy applications, higher mean ablation power, and lower wall thickness. Greater impedance drop was univariably associated with HDR. Conclusion: Outcomes of the TRV are associated with conventional ablation parameters (e.g., duration and power) but also local wall thickness. Catheter stability seems important for successful lesion assessment with the TRV. Further reduction of missing outcomes and validation of the tool are warranted before widespread use. [ABSTRACT FROM AUTHOR]

Ebstein anomaly is a rare heterogeneous congenital heart defect (CHD) with a largely unknown etiology. We present a 6-year-old girl with Ebstein anomaly, atrial septum defect, hypoplastic right ventricle, and persistent left superior vena cava who has a de novo intragenic ~403 kb deletion of the GDP-mannose 4,6-dehydratase (GMDS) gene. GMDS is located on chromosome 6p25.3 and encodes the rate limiting enzyme in GDP-fucose synthesis, which is used to fucosylate many proteins, including Notch1, which plays a critical role during mammalian cardiac development. The GMDS locus has sporadically been associated with Ebstein anomaly (large deletion) and tetralogy of Fallot (small deletion). Given its function and the association with CHD, we hypothesized that loss-offunction of, or alterations in, GMDS could play a role in the development of Ebstein anomaly. We collected a further 134 cases with Ebstein anomaly and screened them for genomic aberrations of the GMDS locus. No additional GMDS genomic aberrations were identified. In conclusion, we describe a de novo intragenic GMDS deletion associated with Ebstein anomaly. Together with previous reports, this second case suggests that GMDS deletions could be a rare cause for congenital heart disease, in particular Ebstein anomaly. [ABSTRACT FROM AUTHOR]

Introduction: To investigate the optimal range of quantitative ablation index (AI) value during superior vena cava (SVC) electrical isolation by radiofrequency catheter ablation (RFCA). Methods: First, in a development cohort of patients with atrial fibrillation (AF), the RFCA with 40 W was performed to complete SVC isolation guided by the conduction breakthrough point from the right atrium to SVC. Then, the range of AI value was calculated by offline analysis on different segments of SVC. Lastly, for the validation of AF patients, the safety and effectiveness of SVC isolation with the optimized target range of AI value were evaluated with an additional adenosine test. Results: A total of 101 patients with AF were included in the study (44 patients in the development cohort/57 in the validation cohort). The segmental ablation strategy was applied in 70% of the patients. According to the offline analysis of the AI values in the development cohort, the target AI value range was set as 350–400. The success rate of SVC isolation in the validation cohort was significantly higher than that in the exploration cohort (100% vs. 90.9%, p =.02), and no complications occurred in the exploration cohort. During the adenosine test, the recovery rate of electrical conduction in SVC was significantly lower than that in the pulmonary vein (3.5% vs. 17.5%). Conclusion: The target AI value with a range from 350 to 400 is safe and effective for high‐power RFCA to complete SVC isolation. [ABSTRACT FROM AUTHOR]

Recommendations for umbilical cord management in intrauterine growth-restricted (IUGR) neonates are lacking. The present randomized controlled trial compared hemodynamic effects of umbilical cord milking (UCM) with delayed cord clamping (DCC) in IUGR neonates > 28 weeks of gestation, not requiring resuscitation. One hundred seventy IUGR neonates were randomly allocated to intact UCM (4 times squeezing of 20 cm intact cord; n = 85) or DCC (cord clamping after 60 s; n = 85) immediately after delivery. The primary outcome variable was superior vena cava (SVC) blood flow at 24 ± 2 h. Secondary outcomes assessed were anterior cerebral artery (ACA) and superior mesenteric artery (SMA) blood flow indices, right ventricular output (RVO), regional cerebral oxygen saturation (CrSO2) and venous hematocrit at 24 ± 2 h, peak total serum bilirubin (TSB), incidences of in-hospital complications, need and duration of respiratory support, and hospital stay. SVC flow was significantly higher in UCM compared to DCC (111.95 ± 33.54 and 99.49 ± 31.96 mL/kg/min, in UCM and DCC groups, respectively; p < 0.05). RVO and ACA/SMA blood flow indices were comparable whereas CrSO2 was significantly higher in UCM group. Incidences of polycythemia and jaundice requiring phototherapy were similar despite significantly higher venous hematocrit and peak TSB in UCM group. The need for non-invasive respiratory support was significantly higher in UCM group though the need and duration of mechanical ventilation and other outcomes were comparable. Conclusions: UCM significantly increases SVC flow, venous hematocrit, and CrSO2 compared to DCC in IUGR neonates without any difference in other hemodynamic parameters and incidences of polycythemia and jaundice requiring phototherapy; however, the need for non-invasive respiratory support was higher with UCM. Trial registration: Clinical trial registry of India (CTRI/2021/03/031864). What is Known: • Umbilical cord milking (UCM) increases superior vena cava blood flow (SVC flow) and hematocrit without increasing the risk of symptomatic polycythemia and jaundice requiring phototherapy in preterm neonates compared to delayed cord clamping (DCC). • An association between UCM and intraventricular hemorrhage in preterm neonates < 28 weeks of gestation is still being investigated. What is New: • Placental transfusion by UCM compared to DCC increases SVC flow, regional cerebral oxygenation, and hematocrit without increasing the incidence of symptomatic polycythemia and jaundice requiring phototherapy in intrauterine growth-restricted neonates. • UCM also increases the need for non-invasive respiratory support compared to DCC. [ABSTRACT FROM AUTHOR]

Radiofrequency catheter ablation of atrial flutter is commonly performed via the femoral vein. There are special cases such as iliac vein compression syndrome and congenital anatomical abnormalities in the femoral vasculature that make approaching the isthmus from the femoral vein difficult. Of course, in the congenital absence of an inferior vena cava, approaching the isthmus from the femoral vein is impossible. In this case report, a patient with atrial flutter and iliac vein syndrome was treated with radiofrequency ablation via the subclavian vein using a robotic magnetic navigation (RMN) system. [ABSTRACT FROM AUTHOR]

Purpose: The aim of this study was to evaluate the effectiveness of palliative radiation therapy (RT) for superior vena cava (SVC) syndrome from lung cancer and to compare the 2-week and 1-week schedules. Materials and Methods: A retrospective study was conducted on lung cancer patients with palliative RT for SVC syndrome. Patients received 30 Gy in 10 fractions (2-week group) or 20 Gy in 5 fractions (1-week group) between July 2012 and June 2022. Treatment outcomes were evaluated at 1 to 2 months after RT. The tumor response and recanalization were evaluated based on the computed tomography (CT). Results: Of the 39 patients, 24 received a 2-week course RT and 15 received a 1-week course of RT. The most common SVC-associated symptoms were edema (51.3%) and dyspnea (43.6%). There were no significant differences in performance status, histology, and grade of SVC. Symptom relief in symptomatic patients was comparable (85.7% in the 2-week group vs. 91.6% in the 1-week group; p = 0.581). There were no significant differences between the 2-week and 1-week groups in recanalization rates (62.5% vs. 60.0%; p = 0.876), tumor responses (75% vs. 60.0%; p = 0.876), and 6-month overall survival rates (29.2% vs. 36.4%; p = 0.726). In each of the two groups, one patient was consulted for re-irradiation. The median survival were 3.7 months for the 2-week group and 4.4 months for the 1-week group. Conclusion: In patients with SVC syndrome, the palliative effect of a 1-week course was equivalent to that of a 2-week course. Given the poor prognosis, a 1-week course may be an option. [ABSTRACT FROM AUTHOR]

Background: Identification of normal variations to the thoracic central venous system anatomy is essential in radiological intervention and cardiothoracic surgery to prevent complications. Purpose: To estimate the prevalence and pattern of normal variations of superior vena cava (SVC) and azygos venous system as well as factors associated with normal variations of SVC. Material and Methods: Venous-phase chest CT of 1336 patients were retrospectively reviewed. Age, sex, and underlying disease were recorded. SVC diameter and cross-sectional area were measured to evaluate for associations with normal variations. Results: The prevalence of normal anatomical variations of SVC and azygos venous system were 0.3% and 1.5%, respectively. Duplicated SVC was the most common variations. The most common variation for the azygos venous system was the connection between the hemiazygos and accessory hemiazygos veins draining into the left brachiocephalic vein (12/1336 cases, 0.9%). The median (interquartile range [IQR]) cross-sectional area compared between normal SVC (297.2 mm2) and duplicated SVC (223.5 mm2) showed a statistically significant difference (P = 0.033). Conclusion: This study determined the prevalence of rare normal variations of the azygos venous system, a connection between the hemiazygos and accessory hemiazygos veins draining into the left brachiocephalic vein. The prevalence of normal variations of the SVC and azygos venous system in the adult Thai population was similar with that of previous publications. Cross-sectional area was the only factor with a significant association with SVC variations. [ABSTRACT FROM AUTHOR]

Background: The Fontan procedure is the final stage of a three-stage palliation process in patients born with a univentricular heart as part of hypoplastic left heart syndrome (HLHS) or other pathologies with a univentricular heart. As essential as this procedure has proven to be for such cases, the Fontan physiology diminishes cardiac output and expands systemic venous pressure, which then leads to venous congestion that can be complicated by protein-losing enteropathy (PLE). This retrospective study aimed to identify the predictors of such complications in all patients who underwent completion of the Fontan procedure at our center (Sheikh Khalifa Medical City/SKMC) in the past eight years. Methods: This study examined the medical records of patients who underwent completion of Fontan repair at our center since the inauguration of the cardiac surgery program of SKMC in the United Arab Emirates (UAE) ≥ 01 Jan 2012 to 31 Dec 2020. Exclusion criteria included the absence of any of the undermentioned data in patient files. Patients were divided into two groups: those who developed PLE and those who did not. For each group, the following data were collected: demographics data (current age and age at completion of Fontan), clinical and laboratory data (oxygen saturation, serum albumin), echocardiographic data (classification of original cardiac diagnosis, degree of atrio-ventricular valve regurgitation, ventricular functions), hemodynamic data (mean pressures of superior vena cava and pulmonary arteries before Fontan completion), operative data (type of initial palliation, type of Fontan, presence of fenestrations and its size) and the need for any cardiac intervention prior to Fontan completion, such as atrio-ventricular valve repair, peripheral pulmonary stenting and arch balloon dilatation. Results: Of the 48 included patients, 13 (25%) developed PLE. Multivariate regression analysis proved that the best predictors of PLE were superior vena cava mean pressure (P D 0:012) and the degree of atrio-ventricular valve regurgitation (P D0:013). An oxygen saturation <83% prior to Fontan completion was 92% sensitive in predicting PLE after Fontan completion. Conclusion: This is a single-center study of the predictors of PLE after Fontan procedure and, as expected from similar studies, SVC pressure higher than 11 mmHg and moderate-to-severe atrio-ventricular valve regurgitation were predictors of Fontan failure. The higher prevalence of PLE in our cohort, as well as lower cut-offs of SVC pressure that can predict complications, may be related to the predominance of hypoplastic left heart in the operated patients, which has been the main referral center for cardiac surgeries in UAE in the last decade. [ABSTRACT FROM AUTHOR]

Suppression of atrial fibrillation (AF) arising within the superior vena cava (SVC) requires SVC electric isolation (SVCI) without sinus node (SN) injury. If an ectopic rhythm and AF trigger coexist within the SVC, the intra‐SVC ectopic rhythm complicates the pre‐SVCI search for the SN. This coexistence is without precedent; however, it is important to carefully locate the SN to prevent injury during SVCI. This case shows a paroxysmal AF with both phenomena coexisting in the SVC. Moreover, outpatient electrocardiographic assessment for tall P‐waves in inferior leads before catheter ablation could predict these phenomena and enable safer SVCI. [ABSTRACT FROM AUTHOR]

This article discusses a rare case of prenatal diagnosis of a right atrial hemangioma in a 32-year-old pregnant woman. The fetal cardiac tumor was detected through ultrasound and MRI, leading to a cesarean section delivery at 32 weeks to address potential complications. The newborn underwent tumor resection shortly after birth, with a successful outcome. The study highlights the importance of prenatal imaging in diagnosing cardiac hemangiomas and guiding clinical decisions. [Extracted from the article]

We have shown that most 'whole-heart' dosimetric parameters (DP) fall out of significance after correcting for pt age, PTV volume, and receipt of durvalumab. Here, we analyze the impact on OS of dose to 17 different cardiac structures (4 chambers, 4 valves, aorta, superior vena cava, pulmonary artery, SA/AV nodes, and 4 coronary arteries (LAD, circumflex, left/right coronary). We culled consecutive pts with LA- NSLC treated with CD-CRT between 3/2009 and 01/2021 at a multi-site tertiary cancer center from our prospectively maintained database. Pts were excluded if they received sequential therapy, prior lung resection, or had oligometastatic disease. Pts with prior lung SBRT were allowed if prior maximum heart dose was < 1000 cGy. We used open-source software to auto-segment the cardiac sub-structures (CSS). In this analysis, we reviewed the DP of minimum/mean doses, D03cc, and gEUD for each CSS and its impact on OS. We performed univariable Cox proportional hazards testing (UVA) on the structures, then developed multivariable models (MVA) from relevant features, including interaction terms between the 4 DP. In MVA, we used the Benjamini-Hochberg correction to minimize false discovery rate. 418 patients met inclusion criteria. 49 (12%) received durvalumab. 56% were male. 74% received IMRT. Prescriptions ranged from 60-70 Gy, with 68% receiving 70 Gy. Median age was 67. Two pts were stage IB, 33 stage 2A/B, and 383 stages IIIA-C (AJCC 8th ed). In UVA, every cardiac substructure was statistically relevant in 1 or more of the 4 DP except for the superior vena cava. Six were significant across all 4 DP: left and right ventricle; AV node; and aortic, mitral, and tricuspid valves. 3 were significant across 3 DP: circumflex artery, left atrium, and pulmonic valve. In MVA of each sub-structure, age (p ~ 1e-7), PTV volume (p ~ 1e-6), and receipt of durvalumab (p ~ 0.003) predominated; all cardiac structures fell out. Consequently, we dichotomized the group around the medians for both PTV volume and age to derive 4 sub-cohorts, which we analyzed separately. See table for CSS findings. In a simple model that does not incorporate cardiotoxicity or pt comorbidity, age and PTV volume predominate. However, the SA node is significant in 3/4 cohorts and SVC in 2/4. With larger PTVs, more CSS become relevant. These findings will inform more sophisticated future modeling. ** = statistically significant (q < 0.05); * = trend toward significance (q < 0.08). [ABSTRACT FROM AUTHOR]

Sparing normal cardiac and vascular substructures from radiation is important to minimize toxicity. Hence, deep learning transformer models were implemented with emphasis on prevalence and number of contrast-enhanced (CECT) and non-contrast CT (NCCT) images in the training set for segmenting the great vessels. Two hundred and forty CTs of patients diagnosed with locally advanced non-small cell lung cancer (LA-NSCLC) were evaluated. A 3D transformer encoder with U-Net decoder was fine-tuned to segment five great vessels: the aorta, pulmonary artery (PA), pulmonary vein (PV), superior vena cava (SVC), and inferior vena cava (IVC) using 3-fold cross-validation. The transformer encoder was previously trained with self-supervised learning on a large number (n = 10,000) of unlabeled CT scans sourced from multiple disease sites using institutional and public datasets. Three model instances with distinct dataset configurations were analyzed: (a) a model trained on the entire training set with (n = 60) CECT and (n = 120) NCCT scans, (b) a model trained only on the CECT subset of (n = 60) scans, and (c) a model trained on the balanced CECT (n = 30) and NCCT (n = 30) scans. Testing was done on 60 patients not used for training. Segmentation accuracy was measured using the Dice Similarity Coefficient (DSC), and the statistical differences between the methods were analyzed using a two-sided, paired, Wilcoxon signed-rank test with Bonferroni correction used for multiple comparisons. Summary results on the testing set consisting of 25 CECTs and 35 NCCT images is shown in Table 1. Balanced and the entire training set models were not significantly different for the analyzed vessels overall as well as for contrast and non-contrast scans (p > 0.05). The CECT model was similarly accurate as the entire training set model for CECT for all vessels and aorta, SVC and IVC for NCCT. The CECT model had significantly lower accuracies for PA (p = 0.015) and PV (p = 0.010) on the NCCT scans than the entire training set model. Our results showed that a model trained with smaller but balanced prevalence of CECT and NCCT scans was similarly accurate as a larger (entire) training set model. In addition, the CECT only model was similarly accurate as the entire training set model for CECT but less so for two of the five analyzed vessels. These results indicate the possibility of using fewer but easily delineated cases with less uncertainty in manually identifying such structures to train generalizable AI methods. [ABSTRACT FROM AUTHOR]

This article discusses a case of severe knotting of a guidewire after central venous catheterization in a 2-year-old girl with a mediastinal tumor. The guidewire became stuck and could not be advanced or retrieved, leading to the need for a femoral vein incision to remove it. Knotting is a serious complication of the Seldinger technique used for central venous catheterization, and it can result in vessel injury or hemorrhage. The article emphasizes the importance of using real-time fluoroscopic guidance and avoiding the application of force if resistance is detected. [Extracted from the article]

Vein of Galen Aneurysmal Malformation (VGAM) is a rare congenital brain vascular abnormality that occurs when the embryonic precursor of the vein of Galen enlarges. It is typically detected during the second or third trimester of gestation through sonography. The diagnosis of VGAM usually occurs after 28 weeks of gestation, although very few cases have been reported in the second trimester. The prognosis of VGAM depends on factors such as ampullary volume, dilatation of the straight sinus, and severity of tricuspid regurgitation. Treatment options include endovascular neurointerventional techniques, such as embolisation with coils or glue, as well as managing associated conditions like hydrocephalus and congestive heart failure. This article presents a case where VGAM was diagnosed as early as 19 weeks through routine anomaly scanning. Advanced neurosonogram with three-dimensional reconstruction of the vascular structure of VGAM was performed. [Extracted from the article]