Importance of the infusion rate for the plasma expanding effect of 5% albumin, 6% HES 130/0.4, 4% gelatin, and 0.9% NaCl in the septic rat.

Abstract:

OBJECTIVES:To compare the plasma volume (PV) expanding effect of a fast infusion rate with that of a slow infusion rate of a fixed volume of 5% albumin, of the synthetic colloids, 6% hydroxyethyl starch 130/0.4 and 4% gelatin, and of 0.9% NaCl in a rat sepsis model and to compare the plasma-expanding effect among these fluids. DESIGN:Prospective, randomized animal study. SETTING:University hospital laboratory. SUBJECTS:One hundred and twelve adult male rats. INTERVENTIONS:Sepsis was induced by cecal ligation and incision followed by closure of the abdomen. After 3 hrs, an infusion of the PV expander under study was started at a volume of 12mL/kg for the colloids and of 48mL/kg for 0.9% NaCl, either for 15 mins or for 3 hrs. A control group underwent the same experimental procedure but no fluid was given. MEASUREMENTS AND MAIN RESULTS:Three hours after start of the infusion (end of experiment), the plasma-expanding effect was better with a slow than a fast infusion rate for the colloids, especially albumin, but the NaCl groups did not differ significantly from the control group. The PV for the control group was 28.7±3mL/kg. In the slow and the fast infusion groups, it was 38.9±4.3 and 32.6±4.2mL/kg for albumin (p < 0.001), 32.9±4.3 and 29.5±4.4mL/kg for hydroxyethyl starch 130/0.4 (p < 0.05), 31.8±3.9 and 28.2±4.1mL/kg for gelatin (p < 0.05), and 31.8±5.3 and 30.7±6.6mL/kg for NaCl (n.s), respectively. CONCLUSIONS:The study showed that the PV expansion by a colloid was greater when given at a slow than at a fast infusion rate, an effect more pronounced for albumin. This difference was not seen for NaCl. The PV-expanding effect was poor for NaCl and better for albumin than for the other colloids.

journal_name

Crit Care Med

journal_title

Critical care medicine

authors

Bark BP,Persson J,Grände PO

doi

10.1097/CCM.0b013e318274157e

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

857-66

issue

3

eissn

0090-3493

issn

1530-0293

journal_volume

41

pub_type

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