however, the high ptt result, which was at the upper end of the therapeutic range for ufh at our institution (75-108 seconds, corresponding to anti-xa levels of 0.3-0.7 u/ml), was alarming during this life-threatening bleeding episode, caused confusion about the validity of the result, ...
PROLONGED PT AND PTT DESPITE ADEQUATE HEPARIN NEUTRALIZATION FOLLOWING CARDIOPULMONARY BYPASS IN CHILDREN Some specific diagnostic and therapeutic recommendations are provided to assist the clinician in evaluating a child with and a prolonged PTT who is in need of immediate neurosurgery.doi:10.1001/archpedi...
5.The prolonged response of the PTT across the UFH therapeutic range is linear and is influenced by the type of reagent.For patients receiving unfractionated heparin, the PTT results, the reference interval, and the UFH therapeutic range are all reported. Limitations of the PTT Sample quality pro...
Methods: For the pilot study, plasma samples from normal subjects ( n =15) and from patients with LA ( n =10), therapeutic anticoagulation with vitamin K-antagonists (VKA) ( n =15) or unfractionated heparin ( n =15), coagulation factors deficiency ( n =16), and inhibitory antibodies ...