Preoperative Hematocrit Is Not Associated With Stroke After Surgery for Acute Type A Aortic Dissection.

Objective: To determine the impact of hematocrit on adverse neurologic events after acute type A aortic dissection (ATAAD) repair under deep hypothermic circulatory arrest.

Design: Retrospective study of consecutive aortic surgeries from 2010 to 2021.

Setting: Single institution.

Low Prevalence of SARS-CoV-2 in Farmed and Free-Ranging White-Tailed Deer in Florida.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been detected in multiple animal species, including white-tailed deer (WTD), raising concerns about zoonotic transmission, particularly in environments with frequent human interactions. To understand how human exposure influences SARS-CoV-2 infection in WTD, we compared infection and exposure prevalence between farmed and free-ranging deer populations in Florida. We also examined the timing and viral variants in WTD relative to those in Florida's human population.

Outcomes of acute type A aortic dissection repair in patients under the age of 75 versus 75 and older.

Objective: Elderly patients are less likely to undergo surgery for an acute type A aortic dissection (ATAAD). This study aims to understand the risks of surgical treatment in patients 75 and older.

Methods: This was a retrospective study using an institutional database of patients who underwent ATAAD repair from 2007 to 2021.

Piscichuvirus-associated meningoencephalomyelitis in a free-ranging American alligator ().

The American alligator () is a keystone species of the southeastern United States. In December of 2022, a free-ranging American alligator was found stuporous and tetraparetic. On postmortem evaluation, lesions were limited to the central nervous system, consisting of prominent perivascular cuffs of lymphocytes and histiocytes that extended into the surrounding neuroparenchyma along with gliosis.

Intraoperative Methadone in Adult Cardiac Surgical Patients and Risks for Postoperative QTc Prolongation.

Objectives: To evaluate the effect of intraoperative intravenous methadone within a standardized enhanced recovery after cardiac surgery pathway on the perioperative corrected QT interval (QTc).

Design: Retrospective cohort study.

Setting: Cardiac surgical patients from a tertiary academic medical institution.