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Clinical Trial
. 2002 Nov;28(11):1574-81.
doi: 10.1007/s00134-002-1509-x. Epub 2002 Oct 1.

Acute haemodynamic effects of a hypertonic saline/dextran solution in stable patients with severe sepsis

R P Oliveira  1 , R Weingartner, E O Ribas, R S Moraes, G Friedman
Affiliations
Clinical Trial

Acute haemodynamic effects of a hypertonic saline/dextran solution in stable patients with severe sepsis

R P Oliveira et al. Intensive Care Med. 2002 Nov.

Abstract

Objective: To study the haemodynamic effects of a hypertonic saline/dextran solution compared with a normal saline solution in patients with severe sepsis.

Design: Prospective double blind and control-randomised study.

Setting: Adult intensive care unit in a university hospital.

Patients: Twenty-nine patients with sepsis with a pulmonary artery occlusion pressure (PAOP) lower than 12 mmHg.

Interventions: Patients were randomised to receive 250 ml of blinded solutions of either normal saline (SS group, n=16) or hypertonic saline (NaCl 7.5%)/dextran 70 8% (HSS group, n=13) solutions.

Measurements and results: Haemodynamic, blood gas, and sodium data were collected at the following time points: baseline, 30 min, 60 min, 120 min, and 180 min. PAOP was higher in the HSS group at 30 min (10.7+/-3.2 mmHg vs 6.8+/-3.2 mmHg) and 60 min (10.3+/-3 mmHg vs 7.4+/-2.9 mmHg); P<0.05. The cardiac index increased in the HSS group and it was greater than the SS group at 30 min (6.5+/-4.7 l min(-1) m(-2) vs 3.8+/-3.4 l min(-1) m(-2)), 60 min (4.9+/-4.5 l min(-1) m(-2) vs 3.7+/-3.3 l min(-1) m(-2)), and 120 min (5.0+/-4.3 l min(-1) m(-2) vs 4.1+/-3.4 l min(-1) m(-2)); P<0.05. The stroke volume index followed a comparable course and it was higher at 30 min [53.6(39.2-62.8) ml m(-2) vs 35.6(31.2-49.2) ml m(-2)] and 60 min [46.8(39.7-56.6) ml m(-2) vs 33.9(32.2-47.7) ml m(-2)]; P<0.05. Systemic vascular resistance decreased in the HSS group and became significantly lower at 30 min (824+/-277 dyne s(-1) cm(-5) m(-2) vs 1139+/-245 dyne s(-1) cm(-5) m(-2)), 60 min (921+/-256 dyne s(-1) cm(-5) m(-2) vs 1246+/-308 dyne s(-1) cm(-5) m(-2)), and 120 min (925+/-226 dyne s(-1) cm(-5) m(-2) vs 1269+/-494 dyne s(-1) cm(-5) m(-2)). Sodium levels increased in the HSS group (P=0.056) and were higher than in the SS group at 30 min (145+/-3 mEq l(-1)vs 137+/-7 mEq l(-1)), 60 min (143+/-4 mEq l(-1) vs 136+/-7 mEq l(-1)), 120 (142+/-5 mEq l(-1)vs 136+/-7 mEq l(-1)), and 180 min (142+/-5 mEq l(-1) vs 136+/-8 mEq l(-1)).

Conclusion: Hypertonic saline/dextran solution may improve cardiovascular performance in severe sepsis without significant side effects. The haemodynamic effect appears related mainly to a volume effect.

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