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Respiratory mechanics during and after anaesthesia for major vascular surgery
Author(s) -
Volta C. A.,
Verri M.,
Righini E. R.,
Ragazzi R.,
Pavoni V.,
Alvisi R.,
Gritti G.
Publication year - 1999
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1046/j.1365-2044.1999.01068.x
Subject(s) - medicine , elastance , respiratory physiology , vascular resistance , clamping , anesthesia , aortic surgery , respiratory system , cardiology , lung , aorta , hemodynamics , mechanical engineering , engineering
To evaluate the effects of major vascular surgery on respiratory mechanics, 11 patients undergoing general anaesthesia for abdominal aortic surgery were studied. Before aortic cross‐clamping, chest wall elastance and resistance both increased (by 126% and 58%, respectively) when surgical retractors were placed. After aortic cross‐clamping, lung elastance increased by 29%, accompanied by a decrease in cardiac index (22%) and an increase in pulmonary (17%) and systemic (15%) vascular resistance. After aortic unclamping, lung elastance decreased, although it remained higher than baseline values (by 12%). All cardiovascular variables returned to the values obtained before aortic cross‐clamping.