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The utilization of extracorporeal membrane oxygenation (ECMO) in trauma mirrors wider trends toward increased utilization of ECMO throughout various forms of critical illness. ECMO can safely be performed on trauma patients with or without anticoagulation. Most of the trauma ECMO cases are for the management of post-traumatic respiratory failure, but they can be used for certain cases of circulatory failure as well. Cannulation of patients for ECMO is technically feasible in the hands of surgeons and intensivists involved in the care of trauma patients. A sound understanding of the ECMO circuit components can help troubleshoot system malfunctions. Emerging technologies may combine extracorporeal circulatory support with endovascular hemorrhage control to prolong the viable survival of exsanguinating patients.

Introduction It remains unclear whether patients who will not accept allogeneic blood transfusion can be managed successfully with veno-arterial (V-A) extracorporeal membrane oxygenation (ECMO). The objective of our study was to determine what percentage of V-A ECMO patients were managed without allogeneic blood transfusion. Methods This was a retrospective, observational cohort study of patients with cardiogenic shock requiring V-A ECMO between January 2016 and January 2019. The primary outcome was avoidance of any allogeneic blood transfusion. Results Of the 206 patients included, 23 (11.2%) were managed without any allogeneic blood transfusion. Fourteen (60.9%) avoided allogeneic blood transfusion during their entire hospitalization. “No-transfusion” patients were younger, more commonly men, were less likely to have a prior diagnosis of hypertension or coronary artery disease, had higher baseline hemoglobin, had higher SAVE scores, and were less likely to have received aspirin before ECMO. No patients in the “no-transfusion” group had major bleeding compared to 35% of patients in the blood transfusion group ( p < 0.001). In-hospital mortality was 17.4% for those who avoided blood transfusion and 41.5% for those who received blood transfusion ( p = 0.04). ECMO duration was significantly shorter in patients who avoided blood transfusion compared to those who received blood transfusion (median 3.5 vs 7 days, p < 0.001). Conclusions Select patients can be successfully managed on V-A ECMO without allogeneic blood transfusion. Jehovah’s Witnesses and other patients with objections to allogeneic transfusion might be offered V-A ECMO if its anticipated duration is short (e.g.

Introduction Spontaneous intracerebral haemorrhage (ICH) is associated with high mortality and high morbidity, including seizures. Seizure prophylaxis is “not recommended” by the American Stroke Association, but practice variation still exists due to inconclusive data. We performed a meta-analysis to assess the current relevant literature to determine the efficacy of seizure prophylaxis following ICH. Methods We performed searches of PubMed, Scopus, and Embase up to September 15, 2020. We included observational and randomized controlled studies reporting seizure prophylaxis and occurrence in adults with ICH. Outcomes were seizures, as defined by the authors, within 14 days of ICH and at the longest point of follow-up. We used random-effects models to estimate the odds ratios (ORs) for seizure prophylaxis and outcomes. The PROSPERO registration was CRD42019140493. Results We included 8 studies (2852 patients) in our analysis. The mean (± standard deviation) age of the pooled patients was 65 (±4) years; 39 % (± 5%) were female. Seizure prophylaxis did not prevent seizures at the longest follow-up time (OR 0.708, 95 % CI 0.438–1.143, p = 0.158, I2 = 34 %). This result was confirmed in subgroup analyses using categorical variables and in meta-regressions using continuous variables. Additionally, seizure prophylaxis was not associated with preventing early seizures, defined as Conclusion Seizure prophylaxis following ICH was not associated with seizure prevention in adults. Most included studies were observational. Further randomized controlled trials examining the efficacy of seizure prophylaxis in high-risk patients and different types of antiepileptic drugs are needed.

Objectives To explore whether precannulation international normalized ratio (INR) is associated with in-hospital mortality in venoarterial extracorporeal membrane oxygenation (VA-ECMO) patients. Design A retrospective, observational cohort study. Setting A quaternary care academic medical center. Participants Patients with cardiogenic shock on VA-ECMO for >24 hours. Interventions None, observational study. Measurements and Main Results A total of 188 patients who were on VA-ECMO were included over three years. Patients were stratified into three groups based on their pre-ECMO INR: INR 1.8. For all patients, demographics, comorbidities, and ECMO details were recorded. The study's primary outcome was in-hospital mortality and secondary outcomes included major bleeding, minor bleeding, allogeneic transfusion, ischemic stroke, intracranial hemorrhage, acute renal failure, acute liver failure, gastrointestinal bleeding, intensive care unit and hospital lengths of stay. A multivariate logistic regression was used to determine whether precannulation INR was associated independently with in-hospital mortality. In-hospital mortality differed significantly by INR group (51.6% INR >1.8 v 42.3% INR 1.5-1.8 v 24.3% INR 1.8 was associated independently with an increased odds of mortality (odds ratio, 2.48; 95% confidence interval, 1.05-6.04) after controlling for sex, Survival after VA- ECMO score, and ECMO indication. An INR within 1.5 to 1.8 did not confer an increased mortality risk. Conclusions An INR >1.8 before VA-ECMO cannulation is associated independently with in-hospital mortality. Precannulation INR should be considered by clinicians so that ECMO resources can be better allocated and risks of organ failure and intracranial hemorrhage can be better understood.

Tissue factor pathway inhibitor (TFPI) has multiple anticoagulant properties. To our knowledge, no studies have measured TFPI levels in adult veno-arterial (VA) extracorporeal membrane oxygenation patients. We hypothesized that adult VA ECMO patients would have increased TFPI levels and slowed tissue factor triggered thrombin generation. Twenty VA ECMO patients had TFPI levels and thrombin generation lag time measured on ECMO day 1 or 2, day 3, and day 5. TFPI levels and thrombin generation lag time were compared against healthy control plasma samples. Mean TFPI levels were significantly higher in ECMO patients on ECMO day 1 or 2 = 81,877 ± 19,481 pg/mL, day 3 = 73,907 ± 26,690 pg/mL, and day 5 = 77,812 ± 23,484 pg/mL compared with control plasma = 38,958 ± 9,225 pg/mL (P < 0.001 for all comparisons). Median thrombin generation lag time was significantly longer in ECMO patients on ECMO day 1 or 2 = 10.0 minutes [7.5, 13.8], day 3 = 9.0 minutes [6.8, 12.1], and day 5 = 10.7 minutes [8.3, 15.2] compared with control plasma = 3.6 minutes [2.9, 4.2] (P < 0.001 for all comparisons). TFPI is increased in VA ECMO patients and tissue factor triggered thrombin generation is slowed. Increased TFPI levels could contribute to the multifactorial coagulopathy that occurs during ECMO.

Objectives To evaluate the clinical outcomes and perioperative complications associated with complete percutaneous decannulation of femoral venoarterial extracorporeal membrane oxygenation (VA-ECMO) with the MANTA closure device. Methods This is a retrospective analysis of a single surgeon consecutive series of 14 patients at a single center who underwent decannulation from VA-ECMO, 10 of whom underwent a percutaneous method of femoral cannula removal. Results After a mean duration of VA-ECMO support of 7.4 ± 3.8 days, all 10 patients, with arterial cannulas ranging in size from 17 to 21 Fr, underwent percutaneous decannulation with the MANTA closure device, with immediate hemostasis. One patient had acute lower limb ischemia that was recognized intraoperatively and successfully treated with suction embolectomy. Two patients had a pseudoaneurysm at the distal perfusion catheter site recognized on perioperative imaging studies, one resolving with observation and the other necessitating thrombin injection. One patient had a hematoma that resolved with observation. Conclusions Percutaneous decannulation from VA-ECMO using the MANTA large-bore vascular closure device is feasible and results in immediate hemostasis with excellent angiographic results.

Objective Patients are often transferred between hospitals for a higher level of care. Critically ill patients require high-intensity care after transfer, but their care intensity during transport is unknown. We studied transport clinicians’ management for patients who had time-sensitive or critical illnesses and were transferred to a critical care resuscitation unit (CCRU) at a quaternary academic center. Methods We prospectively surveyed transport clinicians who brought interhospital transport patients to the CCRU between March 1, 2019, and January 8, 2020. The primary outcome was care intensity during transport, which was defined as new interventions rendered by transport clinicians. Results We analyzed 852 surveys. Seventy-four percent of transports occurred by ground, and 54% originated from emergency departments. Up to 19% of patients received 2 or more interventions, whereas 29% received at least 1 intervention during transport. Ventilator management occurred in 25% of cases. When adjusting for known confounders, respiratory failure or acute respiratory distress syndrome, air transport, and contacting the CCRU attending physicians en route were associated with a higher likelihood of an intervention during transport. Conclusion Transport clinicians provided new interventions in 48% of patients being transferred to the CCRU. Patients with respiratory failure or acute respiratory distress syndrome and those transported by helicopter emergency medical services were more likely to receive interventions en route.

Introduction Acute pulmonary embolus (PE) in the setting of chronic thromboembolic pulmonary hypertension (CTEPH) with elevated PA pressures and right ventricular (RV) failure is a complex condition associated with increased mortality if left untreated. We demonstrate an alternative bedside veno-arterial extracorporeal membrane oxygenation (VA-ECMO) strategy used to facilitate stabilization and pre-operative optimization. Case Report A 29-year-old female with a history of previous PE (on Lovenox), RV dysfunction with elevated PA pressures, and IVC thrombus requiring VV-ECMO assisted suction embolectomy presented to an outside hospital with shortness of breath, hypoxia and CT demonstrating acute on chronic, bilateral PEs. A transthoracic echocardiogram (TTE) showed worsening RV function. She was normotensive, had a heart rate of 140, and was hypoxic so was placed on BiPAP. She was transferred to our facility for further management. On arrival, the patient was tachypneic and hypoxic. She was started on Epinephrine, Milrinone, and inhaled Epoprostenol but was persistently hypoxic with a rising lactic acid and worsening metabolic acidosis. With evidence of worsening RV failure, the patient was cannulated for VA-ECMO to facilitate optimization for advanced management. Prior to cannulation, bedside ultrasound revealed occlusive thrombus in both femoral and iliac veins. The venous drainage cannula was placed in the right internal jugular vein and the arterial return cannula was placed in the right common femoral artery, with antegrade reperfusion cannula. Bedside TTE was used to aide in cannula placement and cannula position was confirmed with x-ray.The patient was on VA-ECMO for 72 hours. During this time, her acidosis improved, Milrinone was weaned off, and she was diuresed. On ECMO day 3, she was taken to the OR for a pulmonary thromboendarterectomy and decannulated from VA-ECMO. The following day she was extubated and a TTE revealed improved right ventricular function. Summary Stabilization with VA-ECMO in patients with PE can be beneficial. This case illustrates the use of an alternative VA-ECMO cannulation strategy to optimize a patient with CTEPH. Of note, the cannulation occurred at the bedside with the use of ultrasound and without the need for intubation. Though this cannulation strategy is theoretically described in the literature, this case illustrates a concrete example of its use.

Respiratory rate (RR) is important in many patient care settings; however, direct observation of RR is cumbersome and often inaccurate, and electrocardiogram-derived RR (RRECG) is unreliable. We asked how data derived from the first 15 min of RR recording after trauma center admission using a novel acoustic sensor (RRa) would compare to RRECG and to end-tidal carbon dioxide-based RR ([Formula: see text]) from intubated patients, the "gold standard" in predicting life-saving interventions in unstable trauma patients. In a convenience sample subset of trauma patients admitted to our Level 1 trauma center, enrolled in the ONPOINT study, and monitored with RRECG, some of whom also had [Formula: see text] data, we collected RRa using an adhesive sensor with an integrated acoustic transducer (Masimo RRa™). Using Bland-Altman analysis of area under the receiver operating characteristic (AUROC) curves, we compared the first 15 min of continuous RRa and RRECG to [Formula: see text] and assessed the performance of these three parameters compared to the Revised Trauma Score (RTS) in predicting blood transfusion 3, 6, and 12 h after admission. Of the 1200 patients enrolled in ONPOINT from December 2011 to May 2013, 1191 had RRECG data recorded in the first 15 min, 358 had acoustic monitoring, and 14 of the latter also had [Formula: see text]. The three groups did not differ demographically or in mechanism of injury. RRa showed less bias (0.8 vs. 6.9) and better agreement than RRECG when compared to [Formula: see text]. At [Formula: see text] 10-29 breaths per minute, RRa was more likely to be the same as [Formula: see text] and assign the same RTS. In predicting transfusion, features derived from RRa and RRECG gave AUROCs 0.59-0.66 but with true positive rate 0.70-0.89. RRa monitoring is a non-invasive option to glean valid RR data to assist clinical decision making and could contribute to prediction models in non-intubated unstable trauma patients.