Heart failure (HF) and pulmonary hypertension (PH) are increasingly prevalent comorbidities in patients presenting for noncardiac surgery. The unique pathophysiology and pharmacotherapies associated with these syndromes have important perioperative implications. As new medications for HF and PH emerge, it is imperative that anesthesiologists and other perioperative providers understand their mechanisms of action, pharmacokinetics, and potential adverse effects.
View Article and Find Full Text PDFStudy Objective: An increasing number of overweight and obese patients are presenting for ambulatory surgical procedures and may be at risk of complications including longer surgeries, longer length of stay (LOS), and possible increase in unanticipated return visits or hospital admissions.
Design: Observational study using prospectively-collected data.
Setting: Freestanding and hospital-based ambulatory surgery facilities.
Increasingly complex medication regimens for many comorbidities in patients for planned surgical and procedural interventions necessitate detailed preoperative evaluation of the pharmacologic therapy, including the indications, the specific drugs, and dosing amount and interval. The implications of continuing or withholding these agents in the perioperative period need to be elucidated, as well as the risks of interactions and side effects. A comprehensive plan of the management of the therapeutic agents should be devised during the preoperative visit, with input from all relevant specialists, and clearly communicated to the patients in a format that ensures their comprehension and consistent compliance.
View Article and Find Full Text PDFAnesthesiol Clin
December 2018
As the population ages, more geriatric patients will be presenting for surgical procedures. Preoperative evaluation seeks to assess patients for geriatric syndromes: frailty, sarcopenia, functional dependence, and malnutrition. Age-related changes in physiology increase risk for central nervous system, cardiovascular, pulmonary, renal, hepatic, and endocrine morbidity and mortality.
View Article and Find Full Text PDFBest Pract Res Clin Anaesthesiol
June 2018
Neuromuscular blockers have long been an intricate part of the anesthesia regimen. The scientific progress in pharmacology and physiology has strengthened their clinical relevance, has helped to delineate with precision their medical role, and has enhanced the safety and effectiveness of their use. New frontiers in research will define further the role of these agents in modern anesthesia practice and guide their expanding and discrete clinical applications.
View Article and Find Full Text PDFBest Pract Res Clin Anaesthesiol
June 2018
Nitrous oxide (NO) is an anesthetic and analgesic gas with a long history of medical applications. It acts on multiple supraspinal and spinal targets and has utility in a wide range of clinical situations. The relative safety, low incidence, and acuity of adverse effects of NO, along with the ability to be administered by trained medical providers with varying clinical backgrounds, as well as self-administered by patients, assure its persistent and expanding role in clinical practice.
View Article and Find Full Text PDFAdmission on the day of surgery for elective cardiac and noncardiac surgery is the prevalent practice in North America and Canada. This approach realizes medical, psychological and logistical benefits, and its success is predicated on an effective outpatient preoperative evaluation. The establishment of a highly functional preoperative clinic with a comprehensive set up and efficient logistical pathways is invaluable.
View Article and Find Full Text PDFPurpose Of Review: Hepatic encephalopathy is a syndrome whose pathophysiology is poorly understood, for which we lack high-quality diagnostic tests and markers, and whose treatment has improved only slightly over the last several decades. Serum ammonia levels remain the diagnostic gold standard.
Recent Findings: Hepatic encephalopathy can be precipitated by several of the complications of cirrhosis; effective treatment of precipitants is as important as treatment of the encephalopathy itself.