Document Detail

Pressure index in hypotensive or hypertensive patients.
MedLine Citation:
PMID:  2777869     Owner:  NLM     Status:  MEDLINE    
Pressure index (brachial/ankle systolic pressure) has been used in vascular surgery for many years and it has been assumed that its value is independent of the systemic pressure. The purpose of this study was to determine whether this assumption is true. Two hundred patients having cardiac catheterisation were studied by measurements of aortic or brachial pressure and ankle systolic pressure using Doppler ultrasound. These measurements were done during catheterisation for cardiac investigation, during operation and in the intensive care unit. None of these patients had peripheral arterial disease. A non-linear relationship was found between the systemic pressure and the systolic ankle pressure. For systemic pressure less than 100 mmHg or greater than 200 mmHg, the ankle pressure was on average 25% lower. For systemic pressure 100 mmHg to 200 mmHg, the ankle pressure was the same or slightly higher. In conclusion, in normal limbs the PI is 1.0-1.2 when the systolic pressure is between 100 and 200 mmHg, but in patients with hypotension or hypertension, it may be less than 1.0. This is an important observation which will prevent vascular surgeons from making erroneous diagnoses of arterial disease in the presence of hypertension or hypotension.
G Belcaro; A N Nicolaides
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of cardiovascular surgery     Volume:  30     ISSN:  0021-9509     ISO Abbreviation:  J Cardiovasc Surg (Torino)     Publication Date:    1989 Jul-Aug
Date Detail:
Created Date:  1989-10-16     Completed Date:  1989-10-16     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0066127     Medline TA:  J Cardiovasc Surg (Torino)     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  614-7     Citation Subset:  IM    
Cardiovascular Surgical Clinic, Università Abruzzese, G. D'Annunzio, Chieti, Italy.
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MeSH Terms
Aorta / physiology
Blood Pressure Determination / methods*
Brachial Artery / physiology
Hypertension / diagnosis*
Hypotension / diagnosis*
Middle Aged

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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