Factors associated with inter-arm blood pressure differences in patients admitted to critical care units.

Background: Experts recommend obtaining one-time dual- (inter)-arm blood pressure (BP) measurements to predict cardiovascular morbidity risk.

Objectives: To determine differences in inter-arm systolic (S)/diastolic (D) BPs obtained simultaneously and sequentially and examine associations between patient factors and clinical outcomes and inter-arm BP differences.

Method: A comparative study of adults treated in intensive care; multivariable logistic models were created to determine the extent that inter-arm BP differences predicted outcomes.