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Table 1 Patient characteristics

From: Mechanisms of pulmonary dysfunction after on-pump and off-pump cardiac surgery: a prospective cohort study

 

Off pump n = 8

On pump n = 31

Prior to and during surgery

  

Age, year

65 (56–74)

62 (38–75)

Sex, m/f

8 (100)

23 (74)/8 (26)

Euroscore

2 (0–5)

3 (0–7)

LV ejection fraction <50%

1 (12)

6 (19)

COPD

0

5 (16)

CPB time, min

0

114 (40–198)

Aortic clamp time, min

0

76 (26–155)

Pleurotomy

8 (100)

19 (61)*

Aortic valve replacement

0

9 (19)

Closure atrial septal defect

0

2 (6)

Number of grafts

4 (2–5)

4 (1–7)

Lowest temperature, °C

36.0 (35.7–36.2)

31.4 (27.8–35.8)*

Red blood cell concentrates

0 (0–4)

0 (0–5)

In the ICU

  

APACHE II

8 (3–13)

9 (2–15)

Dopamine, mg/h

8 (0–28)

8 (0–40)

Nitroglycerin, mg/h

0.5 (0–1)

0.5 (0–2.5)

  1. Median (range) or number of patients, where appropriate. Abbreviations: ICU, intensive care unit; LV left ventricle; COPD, chronic obstructive pulmonary disease; CPB, cardiopulmonary bypass; APACHE II, acute physiology and chronic health evaluation. *P = 0.042; *P < 0.0001