1995
DOI: 10.1055/s-0032-1313598
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Hematological Parameters Influencing the Thrombostat 4000

Abstract: The effects of platelet counts, hematocrit, and leukocyte counts were studied on the closure times of the Thrombostat 4000 (in-vitro bleeding time, IVBT). Closure times became longer with platelet counts <50 x 10'!L; an inverse linear correlation could be established. Hematocrit was also inversely correlated with the closure time. At constant platelet counts a hematocrit of 55% yielded an immediate closure of the filter, while with a hematocrit <15% no closure times could be measured. At constant platelet coun… Show more

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Cited by 7 publications
(6 citation statements)
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“…This is well-known because of recently published studies of adults. 58,59 Correlations with the platelet count were not found in our study com pared with normal individuals. Correlations of the PFA 100® values can be expected only with platelet counts < 50 X 10 3 /μL.…”
Section: Discussioncontrasting
confidence: 76%
See 1 more Smart Citation
“…This is well-known because of recently published studies of adults. 58,59 Correlations with the platelet count were not found in our study com pared with normal individuals. Correlations of the PFA 100® values can be expected only with platelet counts < 50 X 10 3 /μL.…”
Section: Discussioncontrasting
confidence: 76%
“…Correlations of the PFA 100® values can be expected only with platelet counts < 50 X 10 3 /μL. 59 Closure time and maximal blood flow velocity were reduced in the newborn. In comparison, a shortened bleeding time was also found in newborns.…”
Section: Discussionmentioning
confidence: 87%
“…9, D-50924 Köln, Germany Received 7 April 1998; accepted 21 July 1998 to examine whether a very sensitive platelet function test (Thrombostat 4000, VDG, Seeon) would detect platelet activation and whether an activation of the coagulation system could be found. 5,6 Finally, we used a non-invasive transcranial Doppler ultrasound examination to search for cellular aggregates as a marker of microembolism in the arterial circulation. 7,8 …”
mentioning
confidence: 99%
“…At constant platelet counts and hematocrits, mononuclear and polymorphonuclear leukocytes also influenced times in the Thrombostat 4000 ® ; increased counts resulted in shorter closure times. 103…”
Section: Leukopeniamentioning
confidence: 99%