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Table 7 Laboratory indexes

From: Risk factors for venous thromboembolism of total hip arthroplasty and total knee arthroplasty: a systematic review of evidences in ten years

Risk factors(laboratory indexes) Studies reporting on a risk factor for THA or TKA:total number,number reporting a significant (p ≤ .05)increased (+) or decreased (−) risk,and number with no significant association(p > .05)
THA TKA
N p ≤ .05 p > .05 N p ≤ .05 p > .05
  + -    + -  
Preoperative index         
blood glucose ≥ 200 mg/dl 1 1 0 0 1 1 0 0
Resting PaO2 < 75 mmHg - - - - 1 0 0 1
Resting PaCO2 ≥ 45 mmHg - - - - 1 1 0 0
RVSP ≥ 35 mmHg* - - - - 1 0 0 1
Postoperative index         
Higher platelet counts - - - - 1 1 0 0
Hemoglobin ≥ 10.5 g/dl - - - - 1 1 0 0
AaDO2 ≥ 34 Torr - - - - 1 1 0 0
Seroconvertion of IgG-class HIT Antibody - - - - 1 1 0 0
  1. *RVSP = right ventricular systolic pressure, referring to pulmonary hypertension.
  2. AaDO2 = alveolar-arterial oxygen gradient.
  3. HIT = heparin-induced thrombocytopenia, which is a thromboembolic complication that can occur with unfractionated heparin (UFH) or low molecular weight heparin (LMWH).