Point-of-care testing of neonatal coagulation

Clinical and Laboratory Haematology
K TanM Richards

Abstract

The aim of this validation study was to compare prothrombin time (PT) and activated partial thromboplastin time (APTT) results from a point-of-care testing (POCT) device (Rapidpoint Coag) with those from standard laboratory tests. The subjects were newborn infants needing coagulation screen for any clinical indications within a regional neonatal intensive care unit. The level of agreement between POCT and laboratory measurements of PT and APTT was determined. For PT: the bias was from -7.6 to 12.4 s and precision was 5.0 s. For the detection of prolonged PT at a level of 16 s, the sensitivity was 0.70, specificity was 0.57 and the positive predictive value (PPV) was 0.62. For APTT: the bias was from -39.1 to 23.7 s, and precision was 15.7 s. For the detection of prolonged APTT at a level of 55 s, the sensitivity was 0.80, specificity was 0.95 and the PPV was 0.80. The POCT device tested has limited utility as a cot-side device for screening for a prolongation of the APTT in the newborn but is not sensitive for screening for prolongation of the PT.

References

Sep 21, 2000·Blood Coagulation & Fibrinolysis : an International Journal in Haemostasis and Thrombosis·A M van den BesselaarE Witteveen
May 26, 2001·BMJ : British Medical Journal·C P Price
Jan 25, 2003·Journal of Pediatric Hematology/oncology·William L NowatzkeLori Luchtman-Jones
Aug 9, 2003·Thrombosis Journal·Domenico Prisco, Rita Paniccia

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Citations

Feb 16, 2007·Archives of Disease in Childhood. Fetal and Neonatal Edition·Lucy E HindsSimon J Clark
Jan 23, 2013·Blood Coagulation & Fibrinolysis : an International Journal in Haemostasis and Thrombosis·Richard H KleinJacobus Burggraaf

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