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Table 4 Cox regression analysis of factors associated with the length of ICU stay

From: Predictors of postoperative complication and prolonged intensive care unit stay after complete pericardiectomy in tuberculous constrictive pericarditis

VariablesUnivariate analysisMultivariate analysis
P valueHR95% CIP valueHR95% CI
Sex0.6391.1390.662–1.957   
Age0.0401.0141.001–1.0270.5591.0040.990–1.019
Symptom duration0.3331.0310.969–1.096   
Preoperative NYHA functional class0.0421.4081.013–1.9570.4701.1340.806–1.595
Hypertension0.2421.4490.778–2.703   
Diabetes0.4811.3870.558–3.448   
Arrhythmia0.5331.2090.665–2.199   
Body weight0.8001.0030.983–1.022   
SBP0.4241.0070.990–1.024   
DBP0.3641.0090.989–1.030   
Pulse rate0.7421.0030.987–1.018   
Preoperative CVP0.5091.0160.969–1.065   
Pleural effusion0.2551.2850.834–1.980   
Ascites0.1641.3800.877–2.171   
Pericardial effusion0.9531.0160.599–1.724   
Pericardial calcification0.8971.0340.620–1.727   
Pericardial thickness0.8071.0090.938–1.085   
LVEF0.5341.0120.975–1.051   
Hepatomegaly0.4822.0430.280–14.927   
Hemoglobin0.6571.0040.987–1.020   
CRP0.4811.0050.992–1.017   
ESR0.9791.0000.989–1.011   
Albumin0.5371.0160.966–1.068   
Serum sodium0.4731.0250.957–1.098   
Serum potassium0.4101.2230.757–1.977   
Serum creatinine0.5421.0050.989–1.021   
Operative duration0.5191.0010.997–1.006   
Blood loss0.1451.0011.000–1.003   
Intraoperative fluid infusion0.6421.0001.000–1.001   
Postoperative CVP0.4801.0160.972–1.063   
Postoperative complication< 0.0014.5052.494–8.130< 0.0014.1322.217–7.692
  1. HR hazard ratio, CI confidence interval, NYHA New York Heart Association, SBP systolic blood pressure, DBP diastolic blood pressure, CVP central venous pressure, LVEF left ventricular ejection fraction (measured on echocardiogram), CRP C-reactive protein, ESR erythrocyte sedimentation rate