Publications by authors named "D van Maanen"

Background: Decreasing the overcollection of preoperative autologous blood is difficult to achieve. The purpose of this study was to determine whether an educational intervention designed to outline the risks of preoperative autologous collection can decrease such donations and, if so, to determine how this decrease will affect subsequent transfusion rates.

Study Design And Methods: An educational intervention consisting of a didactic presentation to the Department of Gynecology staff about the risks and benefits of autologous blood was implemented.

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Objective: To determine whether preoperative autologous blood donation is justified for patients undergoing elective abdominal or vaginal hysterectomy.

Design: Retrospective cohort study.

Patients And Setting: A total of 263 consecutive patients admitted for elective abdominal or vaginal hysterectomy to a community health maintenance organization hospital during 1993 and 1994.

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The reported high sensitivity and specificity of impedance plethysmography (IPG) in the diagnosis of proximal vein thrombosis were evaluated in a prospective cohort follow-up study, in which IPG was performed three times over a period of seven days in 243 consecutive outpatients with clinically suspected deep venous thrombosis (DVT). The test was abnormal in 112 patients (46%). The positive predictive value of an abnormal IPG for venography-proved DVT was 90%.

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