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Effects of levosimendan and dobutamine in experimental acute endotoxemia: a preliminary controlled study.

Abstract：

OBJECTIVE:To test the hypothesis that levosimendan increases systemic and intestinal oxygen delivery (DO(2)) and prevents intramucosal acidosis in septic shock. DESIGN:Prospective, controlled experimental study. SETTING:University-based research laboratory. SUBJECTS:Nineteen anesthetized, mechanically ventilated sheep. INTERVENTIONS:Endotoxin-treated sheep were randomly assigned to three groups: control (n=7), dobutamine (10 microg/kg/min, n=6) and levosimendan (100 microg/kg over 10 min followed by 100 microg/kg/h, n=6) and treated for 120 min. MEASUREMENTS AND MAIN RESULTS:After endotoxin administration, systemic and intestinal DO(2) decreased (24.6+/-5.2 vs 15.3+/-3.4 ml/kg/min and 105.0+/-28.1 vs 55.8+/-25.9 ml/kg/min, respectively; p<0.05 for both). Arterial lactate and the intramucosal-arterial PCO(2) difference (DeltaPCO(2)) increased (1.4+/-0.3 vs 3.1+/-1.5 mmHg and 9+/-6 vs 23+/-6 mmHg mmol/l, respectively; p<0.05). Systemic DO(2) was preserved in the dobutamine-treated group (22.3+/-4.7 vs 26.8+/-7.0 ml/min/kg, p=NS) but intestinal DO(2) decreased (98.9+/-0.2 vs 68.0+/-22.9 ml/min/kg, p<0.05) and DeltaPCO(2) increased (12+/-5 vs 25+/-11 mmHg, p<0.05). The administration of levosimendan prevented declines in systemic and intestinal DO(2) (25.1+/-3.0 vs 24.0+/-6.3 ml/min/kg and 111.1+/-18.0 vs 98.2+/-23.1 ml/min/kg, p=NS for both) or increases in DeltaPCO(2) (7+/-7 vs 10+/-8, p=NS). Arterial lactate increased in both the dobutamine and levosimendan groups (1.6+/-0.3 vs 2.5+/-0.7 and 1.4+/-0.4 vs. 2.9+/-1.1 mmol/l, p=NS between groups). CONCLUSIONS:Compared with dobutamine, levosimendan increased intestinal blood flow and diminished intramucosal acidosis in this experimental model of sepsis.

journal_name

Intensive Care Med

journal_title

Intensive care medicine

authors

Dubin A,Murias G,Sottile JP,Pozo MO,Barán M,Edul VS,Canales HS,Etcheverry G,Maskin B,Estenssoro E

doi

10.1007/s00134-006-0519-5

subject

Has Abstract

pub_date

2007-03-01 00:00:00

pages

485-94

issue

3

eissn

0342-4642

issn

1432-1238

journal_volume

33

pub_type

杂志文章

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