Association Between Body Mass Index and Perioperative Mortality After Repair of Ruptured Abdominal Aortic Aneurysms.

Objective: The attempt to repair a ruptured abdominal aortic aneurysm carries a significant risk of perioperative mortality. The relationship between body mass index (BMI) and outcomes after repair of ruptured abdominal aortic aneurysms (AAAs) has not been well defined. We report the association of BMI with outcomes after ruptured AAA repair.

A Frailty-Based Risk Score Predicts Morbidity and Mortality After Elective Endovascular Repair of Descending Thoracic Aortic Aneurysms.

Background: Thoracic endovascular aortic repair (TEVAR) has expanded access to descending thoracic aortic aneurysm (DTAA) repair particularly for elderly and frail patients. This high-risk population has limited long-term overall survival, such that appropriate patient selection is required to optimize patient benefit and resource utilization. Our objective is to develop and validate a frailty-based, procedure-specific risk score for patients undergoing elective TEVAR for DTAA.

Attrition rates in integrated vascular and cardiothoracic surgery residency and fellowship programs.

Background: Attrition in surgical programs remains a significant problem resulting in trainee dissatisfaction and wasted time and educational dollars. Attrition rates in general surgery training programs approximate 5% per year (30% cumulative). Attrition rates in cardiovascular surgery training for the traditional vascular surgery fellowship (VSF), the vascular surgery residency (VSR), and the corresponding programs in cardiothoracic surgery have yet to be described, although they are assumed to be similar to those associated with general surgery training.

Natural history of the proximal aorta in patients with descending thoracic aortic disease.

Objective: This study investigated the growth and behavior of the ascending aorta in patients with descending thoracic aortic disease.

Methods: We examined 200 patients with descending thoracic aortic disease including acute type B dissection (n = 95), chronic type B dissection (n = 38), intramural hematoma (n = 23), and thoracoabdominal aortic aneurysms (n = 44). Images from computed tomography and magnetic resonance imaging were evaluated after three-dimensional reconstruction to examine the growth rate in those with >1 year of imaging follow-up (n = 108).

Cluster analysis of acute ascending aortic dissection provides novel insight into mechanisms of distal progression.

Background: Whether primary tear size impacts extent of type A dissection is unclear. Using statistical groupings based on dissection morphology, we examined its relationship to primary tear area.

Methods: We retrospectively reviewed 108 patients who underwent acute ascending dissection repair from 2000-2016.

Acute retrograde type A aortic dissection: morphologic analysis and clinical implications.

Background: This study compares the morphology and outcomes of acute retrograde type A dissections (RTADs) with acute antegrade type A dissections (ATADs), and acute type B dissections.

Materials And Methods: From 2000 to 2016, there were 12 acute RTADs, 96 ATADs, and 92 type B dissections with available imaging. Dissections were characterized using computerized tomography angiography images.

Isolated celiac artery dissection.

Objective: Spontaneous celiac artery dissection is rare, and its natural history is not well studied. The objective of this study was to review our experience with the evaluation and management of this condition.

Methods: During the last 8 years, 19 patients (14 men, five women) presented with the diagnosis of spontaneous celiac artery dissection.

Phosphorylation of AKT and abdominal aortic aneurysm formation.

It is hypothesized that differential AKT phosphorylation between sexes is important in abdominal aortic aneurysm (AAA) formation. Male C57BL/6 mice undergoing elastase treatment showed a typical AAA phenotype (80% over baseline, P < 0.001) and significantly increased phosphorylated AKT-308 (p308) and total-AKT (T-AKT) at day 14 compared with female mice.

The role of extracellular signal-related kinase during abdominal aortic aneurysm formation.

Background: It is hypothesized that activation of extracellular signal-related kinase (ERK) is critical in activating matrix metalloproteinases (MMPs) during abdominal aortic aneurysm (AAA) formation.

Study Design: C57BL/6 male mice underwent either elastase or heat-inactivated elastase aortic perfusion (n = 9 per group). Mouse aortic smooth muscle cells were transfected with ERK-1 and 2 siRNA along with or without elastase treatment.

Development of a novel murine model of aortic aneurysms using peri-adventitial elastase.

Background: Our aim was to establish a novel model of abdominal aortic aneurysms (AAA) in mice using application of peri-adventitial elastase.

Methods: C57BL/6J male mice underwent infrarenal peri-adventitial application of either (1) sodium chloride (control; n = 7), (2) porcine pancreatic elastase (PPE; n = 14), or (3) PPE and doxycycline (PPE + doxycycline 200 mg/kg; n = 11) for 14 days. Aortas were analyzed by video micrometry, immunohistochemistry, qualitative polymerase chain reaction, and zymography.

Increased JNK in males compared with females in a rodent model of abdominal aortic aneurysm.

Background: In humans, there is a 4:1 male:female ratio in the incidence of abdominal aortic aneurysms (AAAs). c-Jun-N-terminal kinase (JNK) is an important upstream regulator of several enzymes involved in AAA formation, including the matrix metalloproteinases (MMPs). The purpose of this study was to determine if there is a gender difference between males and females in JNK during AAA formation.

Increased PAI-1 in females compared with males is protective for abdominal aortic aneurysm formation in a rodent model.

The serine proteases, along with their inhibitor plasmin activator inhibitor-1 (PAI-1), have been shown to play a role in abdominal aortic aneurysm (AAA) formation. The aim of this study is to determine if PAI-1 may be a protective factor for AAA formation and partially responsible for the gender difference observed in AAAs. Male and female wild-type (WT) C57BL/6 and PAI-1(-/-) mice 8-12 wk of age underwent aortic perfusion with porcine pancreatic elastase.

Transhiatal esophagectomy for distal and cardia cancers: implications of a positive gastric margin.

Background: A common operation for cancer of the esophagus and cardia consists of transhiatal esophagectomy, proximal gastrectomy, and a cervical esophagogastric anastomosis. The oncologic adequacy of dividing the stomach 4 to 6 cm distal to palpable tumor is not well documented, and when a positive gastric margin is present on the final pathologic analysis, the appropriate management is not established. This study was undertaken to determine the incidence of a positive gastric margin in these patients and the impact of adjuvant treatment.