The effects of prone positioning on intraabdominal pressure and cardiovascular and renal function in patients with acute lung injury

Anesthesia and Analgesia
R HeringC Putensen

Abstract

To detect any harmful effects of prone positioning on intraabdominal pressure (IAP) and cardiovascular and renal function, we studied 16 mechanically ventilated patients with acute lung injury randomly in prone and supine positions, without minimizing the restriction of the abdomen. Effective renal blood flow index and glomerular filtration rate index were determined by the paraaminohippurate and inulin clearance techniques. Prone positioning resulted in an increase in IAP from 12 +/- 4 to 14 +/- 5 mm Hg (P < 0.05), PaO(2)/fraction of inspired oxygen from 220 +/- 91 to 267 +/- 82 mm Hg (P < 0.05), cardiac index from 4.1 +/- 1.1 to 4.4 +/- 0.7 L/min (P < 0.05), mean arterial pressure from 77 +/- 10 to 82 +/- 11 mm Hg (P < 0.01), and oxygen delivery index from 600 +/- 156 to 648 +/- 95 mL. min(-)(1). m(-)(2) (P < 0.05). Renal fraction of cardiac output decreased from 19.1% +/- 12.5% to 15.5% +/- 8.8% (P < 0.05), and renal vascular resistance index increased from 11762 +/- 6554 dynes. s. cm(-)(5). m(2) to 15078 +/- 10594 dynes. s. cm(-)(5). m(2) (P < 0.05), whereas effective renal blood flow index, glomerular filtration rate index, filtration fraction, urine volume, fractional sodium excretion, and osmolar and free water clearance...Continue Reading

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Citations

May 16, 2013·Intensive Care Medicine·Andrew W KirkpatrickUNKNOWN Pediatric Guidelines Sub-Committee for the World Society of the Abdominal Compartment Syndrome
May 20, 2005·American Journal of Respiratory and Critical Care Medicine·Torsten RichterGuido Musch
Jul 1, 2005·Critical Care : the Official Journal of the Critical Care Forum·Christian Putensen
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