OBJECTIVES: Extracorporeal membrane oxygenation is a life-sustaining therapy for severe respiratory failure. Extracorporeal membrane oxygenation circuits require systemic anticoagulation that creates a delicate balance between circuit-related thrombosis and bleeding-related complications. Although unfractionated heparin is most widely used anticoagulant, alternative agents such as bivalirudin have been used. We sought to compare extracorporeal membrane oxygenation circuit thrombosis and bleeding-related outcomes in respiratory failure patients receiving either unfractionated heparin or bivalirudin for anticoagulation on venovenous extracorporeal membrane oxygenation support. DESIGN: Retrospective cohort study. SETTING: Single-center, cardiothoracic ICU. PATIENTS: Consecutive patients requiring venovenous extracorporeal membrane oxygenation who were maintained on anticoagulation between 2013 and 2020. INTERNVENTIONS: IV bivalirudin or IV unfractionated heparin. MEASUREMENTS AND MAIN RESULTS: Primary outcomes were the presence of extracorporeal membrane oxygenation in-circuit–related thrombotic complications and volume of blood products administered during extracorporeal membrane oxygenation duration. One hundred sixty-two patients receiving unfractionated heparin were compared with 133 patients receiving bivalirudin for anticoagulation on venovenous extracorporeal membrane oxygenation. In patients receiving bivalirudin, there was an overall decrease in the number of extracorporeal membrane oxygenation circuit thrombotic complications (p < 0.005) and a significant increase in time to circuit thrombosis (p = 0.007). Multivariable Cox regression found that heparin was associated with a significant increase in risk of clots (Exp[B] = 2.31, p = 0.001). Patients who received bivalirudin received significantly less volume of packed RBCs, fresh frozen plasma, and platelet transfusion (p < 0.001 for each). There was a significant decrease in the number major bleeding events in patients receiving bivalirudin, 40.7% versus 11.7%, p < 0.001. CONCLUSIONS: Patients receiving bivalirudin for systemic anticoagulation on venovenous extracorporeal membrane oxygenation experienced a decrease in the number of extracorporeal membrane oxygenation circuit-related thrombotic events as well as a significant decrease in volume of blood products administered.

Background Patients undergoing head and neck (H&N) microvascular reconstruction comprise a population at high risk for venous thromboembolism (VTE). Free flap and VTE thromboprophylaxis may coincide but tend to vary from surgeon to surgeon. This study identifies VTE prophylaxis patterns and perceptions among H&N microsurgeons in the United States. Methods An online survey on VTE prophylaxis practice patterns and perceptions was emailed to 172 H&N microsurgeons in the United States using an anonymous link. Results There were 74 respondents (43% response rate). These surgeons completed residencies in otolaryngology (59%), plastic surgery (31%), and oral maxillofacial surgery (7%). Most underwent fellowship training (95%) and have practiced at an academic center (97%) for at least 6 years (58%), performing an average of 42 ± 31 H&N free flap cases per year (range = 1–190). Most adhered to general VTE prophylaxis guidelines (69%) while 11% did not and 20% were unsure. Nearly all surgeons (99%) would provide prophylactic anticoagulation, mostly in the form of subcutaneous heparin (51%) or enoxaparin (44%); 64% additionally used aspirin, while 4% used aspirin alone. The majority of surgeons (68%) reported having postoperative VTE complications, with six surgeons (8%) reporting patient deaths due to pulmonary embolism. A third of the surgeons have encountered VTE prophylaxis-related adverse bleeding events, but most still believe that chemoprophylaxis is important for VTE prevention (92%). While 35% of surgeons were satisfied with their current practice, most would find it helpful to have official prophylactic anticoagulation guidelines specific to H&N free flap cases. Conclusion The majority of microsurgeons experienced postoperative VTE complications after H&N free flap reconstruction despite the routine use of prophylactic anticoagulation. Though bleeding events are a concern, most surgeons believe chemoprophylaxis is important for VTE prevention and would welcome official guidelines specific to this high-risk population.

Aim Ventral and groin hernias are commonly diagnosed using radiographic imaging. We aimed to determine if informing patients of the presence of a clinically apparent or occult hernia on imaging would change their abdominal wall quality of life (AW-QOL). Materials and Methods Consecutive patients with a hernia on elective CT abdomen/pelvis were enrolled. Patients underwent standardized abdominal examination by surgeons, and completed the modified Activities Assessment Scale, a validated, hernia-specific AW-QOL survey. On this scale, 1 is poor AW-QOL, 100 is perfect, and the minimally clinically important difference is 7. Patients were randomized to complete the one-year follow-up survey before or after being informed of the presence of a hernia on their imaging results. Primary outcome was change in AW-QOL compared to baseline. Results Of 169 patients randomized, 126 (75%) completed follow up at one-year. Among patients with occult hernias, those who completed the follow-up survey after being informed of having a hernia had a lower follow-up AW-QOL (mean difference -7.6, 95% CI = -20.8 to 5.7, p=0.261) compared to those who completed the survey before being informed. Conversely, for patients with clinical hernias, those who completed the survey after being informed had higher adjusted follow-up AW-QOL (mean difference 10.3, 95% CI = -3.0 to 23.6, p = 0.126) than those that completed it after. Conclusions Conveying findings of hernias found on CT imaging can influence patients’ AW-QOL. Future research should focus on identifying and addressing patients’ concerns after disclosure of CT results.

Liposuction is one of the most commonly performed aesthetic plastic surgery procedures in the world. Although serious complications are rare, intra-abdominal complications such as bowel perforation are one of the most common causes of death after liposuction. We present a case series of six patients who sustained intra-abdominal injuries from liposuction. The acute care surgery (ACS) faculty at a single institution were surveyed for patients. Six patients were identified over a three-year period. The average age was 45 years, and all patients were female. All six underwent a cosmetic procedure in addition to their liposuction. Four (67%) had previous abdominal surgery, and five (83%) were overweight or obese. All patients presented with abdominal pain, tachycardia, and leukocytosis. All six underwent exploratory laparotomies: four patients had small bowel enterotomies, one had cecal volvulus and abdominal compartment syndrome, and one had fascial violation. They underwent an average of four ACS procedures (range 1 to 11) and had an average hospital LOS of 29 days (range 5 to 60) and an average ICU LOS of 11 days (range 1 to 39). Intra-abdominal injuries are a rare complication of liposuction; however, a high index of suspicion must be maintained to diagnose and treat these life-threatening injuries.