Case Studies in Clinical Hemostasis Case Studies in ... - Pathology

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Preoperative Coagulation Testing ! Rohrer, Michelotti, and Nahrwold. Ann. Surg. 208, 554, 1988 ! Efficacy of screening tests compared to efficacy of tests indicated by history and/or physical examiantion ! 1119 tests (BT, PT, PTT, PC) in 282 patients ! 514 screening tests in 282 patients, 4.1% abnormal, none clinically significant ! 605 indicated tests, 7.4% abnormal ! 44% of PT and PTTs, 59% of PCs, and 38% of BTs could be safely eliminated, saving $370,000/year
Bleeding Time As A Preoperative Screening Test ! Barber et al. Am. J. Med. 78:761, 1985 ! Reviewed 1,941 bleeding times performed as part of routine preoperative screen during a six- month period ! Prolonged bleeding times (> 10 min.) found in 110 patients (5.6%) ! Bleeding risk factors identified in 83/110 patients (75%) ! Only 2/27 patients without risk factors severely prolonged bleeding times (> 20 min.)
Page 1 and 2: Case Studies in Clinical Hemostasis
Page 3 and 4: Patient L.S. ! What is the bleeding
Page 5 and 6: Bleeding Time ❝ The time between
Page 7 and 8: Bleeding Time Procedure ! Clean sit
Page 9 and 10: Variability Of BT ! Location & dire
Page 11 and 12: Clinical Applications Of Bleeding T
Page 14 and 15: The Bleeding Time As A Diagnostic T
Page 16 and 17: Use of the Bleeding Time to Predict
Page 20 and 21: Applications of Bleeding Time In Pl
Page 22 and 23: The Bleeding Time - Neither Pariah
Page 24 and 25: Contact Factors - Charged Surface M
Page 26 and 27: aPTT Inhibitor Screen Normal Plasma
Page 28 and 29: Non-Specific Coagulation Inhibitor

Case Studies in Clinical Hemostasis Case Studies in ... - Pathology

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