Abstract:
:Reversal of the usual relationship between aortic and radial artery pressure can occur in patients following cardiopulmonary bypass. Radial systolic (and often radial mean) pressures were lower, relative to aortic pressure, after cardiopulmonary bypass than before bypass in all 18 patients studied. The systolic pressure difference (aortic minus radial) was large enough to be of clinical concern (12-32 mmHg) in 13 patients. The change persisted for 10-60 min, gradually returning toward normal. The change temporally was associated with warming at the end of cardiopulmonary bypass and lowered forearm vascular resistance. Relative forearm vascular resistance (x) predicted the systolic aortic minus radial pressure difference (y) by the equation y = -0.34x + 17 for all patients (r = -0.49, P less than 0.001). The authors conclude that radial artery pressure does not accurately reflect central aortic pressure in the immediate postbypass period.
journal_name
Anesthesiologyjournal_title
Anesthesiologyauthors
Stern DH,Gerson JI,Allen FB,Parker FBdoi
10.1097/00000542-198505000-00002subject
Has Abstractpub_date
1985-05-01 00:00:00pages
557-61issue
5eissn
0003-3022issn
1528-1175journal_volume
62pub_type
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