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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

Variables

Univariate analysis

Multivariate analysis

P value

HR

95% CI

P value

HR

95% CI

Sex

0.639

1.139

0.662–1.957

   

Age

0.040

1.014

1.001–1.027

0.559

1.004

0.990–1.019

Symptom duration

0.333

1.031

0.969–1.096

   

Preoperative NYHA functional class

0.042

1.408

1.013–1.957

0.470

1.134

0.806–1.595

Hypertension

0.242

1.449

0.778–2.703

   

Diabetes

0.481

1.387

0.558–3.448

   

Arrhythmia

0.533

1.209

0.665–2.199

   

Body weight

0.800

1.003

0.983–1.022

   

SBP

0.424

1.007

0.990–1.024

   

DBP

0.364

1.009

0.989–1.030

   

Pulse rate

0.742

1.003

0.987–1.018

   

Preoperative CVP

0.509

1.016

0.969–1.065

   

Pleural effusion

0.255

1.285

0.834–1.980

   

Ascites

0.164

1.380

0.877–2.171

   

Pericardial effusion

0.953

1.016

0.599–1.724

   

Pericardial calcification

0.897

1.034

0.620–1.727

   

Pericardial thickness

0.807

1.009

0.938–1.085

   

LVEF

0.534

1.012

0.975–1.051

   

Hepatomegaly

0.482

2.043

0.280–14.927

   

Hemoglobin

0.657

1.004

0.987–1.020

   

CRP

0.481

1.005

0.992–1.017

   

ESR

0.979

1.000

0.989–1.011

   

Albumin

0.537

1.016

0.966–1.068

   

Serum sodium

0.473

1.025

0.957–1.098

   

Serum potassium

0.410

1.223

0.757–1.977

   

Serum creatinine

0.542

1.005

0.989–1.021

   

Operative duration

0.519

1.001

0.997–1.006

   

Blood loss

0.145

1.001

1.000–1.003

   

Intraoperative fluid infusion

0.642

1.000

1.000–1.001

   

Postoperative CVP

0.480

1.016

0.972–1.063

   

Postoperative complication

< 0.001

4.505

2.494–8.130

< 0.001

4.132

2.217–7.692

  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