Search

Peroralcholangio-pancreatoscopy (POCP) is used for diagnosis and treatment of biliopancreatic disease when standard endoscopy (ERCP) or pre-operative imaging workup failed. We aimed to evaluate the diagnostic and therapeutic performance of POCP in complex biliary and pancreatic diseases.Patients with indeterminate biliary or pancreatic duct (PD) strictures, and patients with failure of complex biliary or pancreatic stones removal, were enrolled (six centers). The primary endpoint evaluated malignancy diagnostic performances (accuracy, sensitivity, specificity) and therapeutic performances (biliary or pancreatic stones extraction). Secondary endpoints evaluated: technical success in lesion visualization, ease of maneuvering, image quality and 30-days complications.From November 2016 to March 2018, 66 patients were included: 29/37 women/men, median age (IQR): 73 (64-82). Fifty-three patients had diagnostic POCP and 13 patients therapeutic POCP. One endoscopist with one or two endoscopy nurses performed 94% of the POCP. The 'POCP visual impression' of malignancy showed 92.0% sensitivity, 92.9 % specificity and 92.5 % overall accuracy compared with the final diagnosis. 'POCP-guided samples histological analysis' showed 75.0 % sensitivity and 91.6% specificity. The technical success for lesion visualization was 98.5%. The median VAS scores for insertions in bile and PD were respectively 9.0 (8.1-9.6) and 9.0 (8.8-10.0). Median VAS score for access to the lesion and image quality were respectively 9.0 (7.7-9.6) and 9.0 (7.9-9.7). Only three 30-day minor complications occurred without any major complications.POCP was an effective, safe and easy-to-use tool in routine clinical practice for the management of complex diagnostic and therapeutic biliary and pancreatic diseases (NCT03190343).

Background The use of intracardiac electrograms to guide atrial fibrillation (AF) ablation has yielded conflicting results. Objectives The authors evaluated the usefulness of spatiotemporal dispersion, a visually recognizable electric footprint of AF drivers, for the ablation of all forms of AF. Methods The authors prospectively enrolled 105 patients admitted for AF ablation. AF was sequentially mapped in both atria with a 20-pole PentaRay catheter. The authors tagged and ablated only regions displaying electrogram dispersion during AF. Results were compared to a validation set in which a conventional ablation approach was used (pulmonary vein isolation/stepwise approach). To establish the mechanism underlying spatiotemporal dispersion of AF electrograms, the authors conducted realistic numerical simulations of AF drivers in a 2-dimensional model and optical mapping of ovine atrial scar-related AF. Results Ablation at dispersion areas terminated AF in 95% of the 105 patients. After ablation of 17 ± 10% of the left atrial surface and 18 months of follow-up, the atrial arrhythmia recurrence rate was 15% after 1.4 ± 0.5 procedures per patient versus 41% in the validation set after 1.5 ± 0.5 procedures per patient (arrhythmia free-survival: 85% vs. 59%; log-rank p Conclusions The clustering of intracardiac electrograms exhibiting spatiotemporal dispersion is indicative of AF drivers. Their ablation allows for a nonextensive and patient-tailored approach to AF ablation. (Substrate Ablation Guided by High Density Mapping in Atrial Fibrillation [SUBSTRATE HD]; NCT02093949)

Objectives This study sought to evaluate the impact of a complex fractionated atrial electrogram (CFAE)–guided ablation strategy on atrial fibrillation (AF) dynamics in patients with persistent AF. Background It is still unclear whether complete pulmonary vein isolation (PVI) is required or if the ablation of well-delineated pulmonary vein (PV) subregions could achieve similar outcomes in persistent AF. Methods CFAE-guided ablations were performed in 76 patients (65.2 ± 10 years of age) with persistent AF. In 47 patients, we measured mean PVs and left atrial appendage (LAA) cycle length (CL) values (PV-CL and LAA-CL), before ablation and before AF termination. We defined “active” PVs as PV-CL ≤ LAA-CL, “rapid fires” as PV-CL ≤80% of LAA-CL, and “PV-LAA CL gradient” as a significant CL difference between the 2 regions. Results AF termination (sinus rhythm [SR] or atrial tachycardia [AT] conversion) occurred in 92% and SR conversion in 75%. The radiofrequency time for AF termination and total radiofrequency time were 26 ± 25 min and 61.1 ± 21.6 min, respectively. Thirty of 47 patients had active PV (with 19 PV “rapid fires”). Ablation significantly increased median CL, both at PVs and LAA from 188 ms (interquartile range [IQR]: 161 to 210 ms) to 227.5 ms (IQR: 200 to 256 ms) (p Conclusions CFAE-guided ablation leads to a large decrease in PV frequency of activation, preceding AF termination. A PV modulation approach, rather than complete PVI, may be preferable for persistent AF.

BACKGROUND: DNA mutational analysis of pancreatic cystic fluid (CF) is a useful adjunct to the evaluation of pancreatic cysts. KRAS/GNAS or RAF/PTPRD/CTNNB1/RNF43 mutations are highly specific to precancerous or advanced neoplasia. Several studies recently demonstrated the ability of next-generation sequencing (NGS) analysis to detect DNA mutations in pancreatic CF, but few studies have performed a systematic comparative analysis between pancreatic CF and neoplastic surgical tissue (NT). The value of CF-NGS analysis indicators for determining surgical resection necessitates evaluation. AIM: To confirm whether CF genomic profiles are a reliable malignancy predictor by comparing NGS mutational analyses of CF and NT. METHODS: Patients requiring surgery for high-risk pancreatic cysts were included in a multicenter prospective pilot study. DNA from CF (collected by endoscopic ultrasound-guided fine needle aspiration (known as EUS-FNA)) and NT (collected by surgery) were analyzed by NGS. The primary objective was to compare the mutation profiles of paired DNA samples. The secondary objective was to correlate the presence of specific mutations (KRAS/GNAS, RAF/ PTPRD/CTNNB1/RNF43/POLD1/TP53) with a final cancer diagnosis. Sensitivity and specificity were also evaluated. RESULTS: Between December 2016 and October 2017, 20 patients were included in this pilot study. Surgery was delayed for 3 patients. Concordant CF-NT genotypes were found in 15/17 paired DNA, with a higher proportion of mutated alleles in CF than in NT. NGS was possible for all pancreatic CF collected by EUS-FNA. In 2 cases, the presence of a KRAS/GNAS mutation was discordant between CF and NT. No mutations were found in 3 patients with NT or pancreatic cysts with high-grade dysplasia. The sensitivity and specificity of KRAS/GNAS mutations in CF to predict an appropriate indication for surgical resection were 0.78 and 0.62, respectively. The sensitivity and specificity of RAF/PTPRD/CTNNB1 /RNF43/POLD1/TP53 mutations in CF were 0.55 and 1.0, respectively. CONCLUSION: Mutational analyses of CF and NT were highly concordant, confirming the value of NGS analysis of CF in the preoperative malignancy assessment. However, these results need to be confirmed on a larger scale.

The role of pulmonary veins (PVs) in persistent atrial fibrillation (AF) perpetuation appears less important than in paroxysmal AF. Electrogram-based substrate ablation is not widely performed as a stand-alone strategy.To evaluate PV activity in AF perpetuation and efficacy of our patient-tailored ablation strategy (electrogram-based substrate ablation with or without pulmonary vein isolation [PVI]).One hundred twenty-one patients with paroxysmal (n = 19; 15.7%), persistent (n = 77; 63.6%), or long-standing persistent (n = 25; 20.7%) AF underwent electrogram-based substrate ablation with AF termination end point: sinus rhythm or atrial tachycardia conversion. Before ablation, we classified PVs as "passive" if silent PV or if PV cycle length is greater than left atrial appendage cycle length. No PVI was performed in such cases.Passive PVs were observed in 52 of 121 patients (paroxysmal AF = 0%, persistent AF = 40%, and long-standing persistent AF = 76%; P.0001]). Substrate ablation terminated AF in 95.6% (sinus rhythm conversion in 80.2%). Compared with patients with active PVs, patients with passive PVs had longer AF sustained duration (19.1 ± 29.7 months vs 4.9 ± 11.1 months; P.0001), larger left atrial diameter (46.9 ± 7.3 mm vs 41.9 ± 6.0 mm; P = .0014), lower left ventricular ejection fraction (45.4% ± 13.5% vs 55.1% ± 9.4%; P.0001), and more often structural heart disease (57% vs 33%; P = .02). After a follow-up of 20.39 ± 11.23 months (1.6 procedures per patient), 82% were arrhythmia free with this strategy.PV activity during AF decreases with AF chronicity, left atrial dilatation, and left ventricular ejection fraction. Our patient-tailored ablation strategy without systematic PVI provides good results.

Introduction Le service de neurologie de l’hopital Saint-Joseph a comme objectif ambitieux une amelioration continue de la prise en charge de ses patients. Ainsi, il nous a semble interessant de determiner l’etat de « bonheur » et ses composantes chez nos patients. Objectifs Pour repondre a ces questions, et compte tenu du peu d’informations publiees en neurologie, il a ete decide de mener une enquete pour evaluer le bonheur des patients recus en consultation et pour determiner ce que represente, pour eux, le bonheur. Methodes Deux questions ont ete posees par le neurologue a ses patients pendant ses consultations externes : une question fermee « etes-vous heureux ? », et une question ouverte « pour vous qu’est-ce que le bonheur ? ». Les reponses ont ete recueillies en instantane. Les resultats ont ete analyses afin de determiner, s’il existait un lien entre le sentiment de bonheur et le sexe, l’âge ou la pathologie neurologique. Les « representations » du bonheur ont ete classees en categories : famille/entourage, sante/physique, philosophique/spirituel et socioprofessionnel. Resultats En avril 2017, 121 patients consecutifs ont ete questionnes : 45 hommes/76 femmes, d’âge moyen 64,6 ± 19 ans et atteints de diverses pathologies neurologiques. Les patients s’estimaient heureux a 82,5 %, sans aucune difference majeure liee au sexe, a l’âge, ni a la pathologie. Le sentiment de bonheur etait lie d’abord a la qualite des relations avec l’entourage pour 35 % des patients, puis a une question plus philosophique ou ethique pour 33 % et a une meilleure sante (ou guerison) pour seulement 16 % des patients. Discussion Ces resultats nous confirment que le sentiment de bonheur est subjectif chez ces patients se disant paradoxalement majoritairement heureux, malgre des affections neurologiques tres invalidantes. Une prise en charge globale du patient et de son entourage parait donc indispensable. Se pose donc la question de ce que peut proposer le neurologue (et les autres intervenants) aux patients et a leurs entourages et quels en seraient les impacts ? Conclusion D’apres ces resultats, faisons-nous fausse route en pensant que la guerison ou la meilleure sante est l’attente la plus importante chez nos patients ? Une etude complementaire est en cours en France, pour confirmer ces resultats et reflechir a une prise en charge plus adaptee.

This study sought to evaluate the impact of a complex fractionated atrial electrogram (CFAE)-guided ablation strategy on atrial fibrillation (AF) dynamics in patients with persistent AF.It is still unclear whether complete pulmonary vein isolation (PVI) is required or if the ablation of well-delineated pulmonary vein (PV) subregions could achieve similar outcomes in persistent AF.CFAE-guided ablations were performed in 76 patients (65.2 ± 10 years of age) with persistent AF. In 47 patients, we measured mean PVs and left atrial appendage (LAA) cycle length (CL) values (PV-CL and LAA-CL), before ablation and before AF termination. We defined "active" PVs as PV-CL ≤ LAA-CL, "rapid fires" as PV-CL ≤80% of LAA-CL, and "PV-LAA CL gradient" as a significant CL difference between the 2 regions.AF termination (sinus rhythm [SR] or atrial tachycardia [AT] conversion) occurred in 92% and SR conversion in 75%. The radiofrequency time for AF termination and total radiofrequency time were 26 ± 25 min and 61.1 ± 21.6 min, respectively. Thirty of 47 patients had active PV (with 19 PV "rapid fires"). Ablation significantly increased median CL, both at PVs and LAA from 188 ms (interquartile range [IQR]: 161 to 210 ms) to 227.5 ms (IQR: 200 to 256 ms) (p 0.0001) and from 197 ms (IQR: 168 to 220 ms) to 224 ms (IQR: 193 to 250 ms) (p 0001), respectively. After ablation, PV-LAA CL gradients were withdrawn and all PV "rapid fires" were extinguished (without PVI). After 17.2 ± 10 months of follow-up and 1.61 ± 0.75 procedures, 86.3% and 73% of the patients were free from AF and from any arrhythmia (AF/AT), respectively.CFAE-guided ablation leads to a large decrease in PV frequency of activation, preceding AF termination. A PV modulation approach, rather than complete PVI, may be preferable for persistent AF.

Introduction: Multi-electrode electrogram temporal activation and fractionation have been used to localize atrial fibrillation (AF) drivers. Yet, the feasibility of a simplified “online” analysis and its usefulness to ablate AF remain to be investigated. Hypothesis: Evaluating a simplified “online” electrogram analysis approach designed to localize and ablate AF drivers. Methods: 105 patients undergoing AF ablation (77% with persistent AF, 3 centres) were prospectively enrolled. AF was first mapped in both atria with the 20-pole contact electrode catheter PentaRay® (Biosense Webster, Inc.) in order to identify regions with a temporal activation pattern compatible with the presence of rapidly rotating rotors. Specifically, regions with consecutive activations spanning the majority of the AF cycle length (including examples of rapid and continuously fractionated electrograms) were visually selected (“hot zone”).The endpoints were AF termination acutely, and freedom from long-term AF (single procedure). Off-line, electrogram cycle length values were compared between “hot” and “non-hot” regions and a numerical simulation of PentaRay-enabled unipolar recordings of a stable rotor driving AF was conducted Results: Visually selected “hot” regions located mostly in the left atrium (6.5 ±4.2/patient; ~70% of ”hot” regions). “Hot” regions were activated at a significantly shorter cycle length than “non-hot” regions (171.8 ± 4.8 vs. 193.0 ± 6.3 ms, p=0.01, N=20). 95.6% of the “hot regions” were automatically labelled CFAEs (automated analysis, Carto). However, 4.5±3.4 distinct CFAEs regions/patient were also labelled in “non-hot” regions. Ablation at “hot” regions terminated AF in 99/104 patients (95.2%), 46 [21-72] min after the 1st radiofrequency application within 20 [10-37] min of RF. Also, numerical simulations show that a simplified PentaRay®-enabled activation analysis is sufficient to distinguish rotor and non-rotor regions. After 9+3 [6-11], months of median [Q1-Q3] follow-up, 87 % were free from AF after 1 procedure and 53 % still under antiarrhythmic drugs. Conclusions: With this simplified “online” analysis, we could successfully localize rotor regions and perform efficient AF ablation. Clinical trial.gov: NCT02093949

Dual-Knife(®) (Olympus) and Hydride-Knife(®) are new needle knives frequently used for submucosal dissection because of their safety and precision. In this study we aimed to evaluate the efficacy and safety of such devices in the diverticulopexy by flexible endoscopy.From February 2009 to March 2013, 42 patients (25 men), mean age 74.5, with symptomatic Zenker's diverticulum, were included in a non-randomized prospective multicenter study. The symptoms described by all patients include dysphagia, regurgitation and/or swallowing disorders. The diverticulopexy was performed with the Dual-Knife(®) or Hydrid-Knife(®), after septum exposure with the diverticuloscope, and terminated with distal tip clips positioning. All complications were noted. Patients' symptoms were regularly assessed during follow-up visits or telephone interviews.The first endoscopy treatment was successful for all patients. Thirty-seven patients (88%) had symptoms improvement after the first treatment. The recurrence rate was 14% (6 patients); a second endoscopic treatment was required 12 months on average after the first treatment, with 100% efficiency. Mid-term (16 months) efficiency was 91.67% after 1 to 3 endoscopic treatments. A total of 55 procedures were performed without perforation or significant bleeding and 3 patients underwent surgery. In multivariate analysis, the diverticulum size and the type of dissection knife were not risks factors for recurrence.Endoscopic diverticuloscope-assisted diverticulotomy with submucosal dissection knives is a safe and effective alternative treatment for patients with a symptomatic Zenker's diverticulum measuring between 2 and 10 cm.

Background and purpose: Up until recently complex fractionated atrial electrogram (CFAE) ablation has been considered as time consuming and its achievement as challenging, especially for non experimented operators. Moreover, results of substrate ablation based on CFAE detection in atrial fibrillation (AF) are very disparate, mainly because of the operator’s subjective electrogram visual analysis and the difficult distinction between CFAEs really involved in AF perpetuation from other CFAE. Automatic detection provided by 3D mapping system (CARTO® algorithm) can be helpful but is not selective enough, drawing too wide CFAE areas. We sought to demonstrate a better selectivity of a new CFAE algorithm setting in order to better discriminate CFAEs really involved in AF perpetuation from other CFAE.