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Table 2 The comparison between both groups regarding platelet levels and coagulation parameters

From: Insertion of central venous catheters in children undergoing bone marrow transplantation: is there a platelet level for a safe procedure?

Parameter Group A Group B
Preoperative   
PT (mean); seconds 12.5 13
aPTT (mean); seconds 32 35.4
INR; mean 1.0 1.1
Platelet count; per microliter   
  Range 60,000–505,000 5000–42,000
  Median 232,000 27,500
Postoperative   
Platelet count; per microliter   
  Range 50,000–430,000 18,000–88,000
  Median 220,000 59,500
  1. PT prothrombin time, aPTT activated partial thromboplastin time, INR international normalized ratio