I know those guys guys above are highly trained athletes, but…..
BT_PO 1.50 Describe the cardiovascular changes that occur with morbid obesity
This topic is not well covered in the standard primary exam texts. A textbook previously on the primary examination reading list, Foundations of Anaesthesia , had a whole chapter (Ch 71) devoted to the topic. Unfortunately, the new iteration of the book, Pharmacology and Physiology for Anaesthesia by Hemmings and Egan (a great book to look at), has dispensed with the subject – drats!!
The ANZCA library has three ebooks devoted to the peri-operative management of the morbidly obese. Each of these books has sections detailing the basic alterations of physiology associated with obesity. The most comprehensive of these is Morbid obesity: perioperative management 2e edited by Alvarez et al.
For those of you without access to the ANZCA library, here is a overview of some of the issues, from the little CME journal produced by the same group as the BJA.
Cardiac output increases linearly in proportion to free fat mass TRUE/FALSE
Blood volume on a mL/kg bases is increased in the morbidly obese TRUE/FASLE
Left ventricular hypertrophy (LVH) is common in morbid obesity, even in the absence of hypertension TRUE/FALSE
Standard ECG criteria for diagnosing LVH are valid in morbid obesity TRUE/FALSE
Angiotensinogen is produced by visceral adipocytes resulting in excessive angiotensin II TRUE/FALSE