Hemodynamics during experimental gastric dilatation-volvulus in dogs.

Abstract

Gastric dilatation-volvulus (at 30 mm of Hg of gastric pressure) was experimentally induced in 8 dogs under sodium pentobarbital anesthesia. Hemodynamic indices including cardiac output, mean aortic pressure, left ventricular end diastolic pressure, heart rate, total peripheral resistance, and dp/dtmax were measured during a 180-minute period of gastric dilatation-volvulus and for 120 minutes after gastric decompression. Experimental gastric dilatation-volvulus resulted in significant (P less than 0.05) decreases in cardiac output (64%), mean aortic pressure (48%), left ventricular end diastolic pressure (68%), and ventricular dp/dtmax (32%) compared to 4 control dogs. Hemodynamic indices returned toward control values after gastric decompression. It was concluded that gastric dilatation-volvulus in the present experiment was capable of inducing hemodynamic alterations of a magnitude similar to those reported in gastric dilatation studies, using higher gastric pressures.

• Authors: E C Orton, W W Muir 3rd
• Journal: American journal of veterinary research (Am J Vet Res) Vol. 44 Issue 8 Pg. 1512-5 (Aug 1983) ISSN: 0002-9645 [Print] United States
• PMID: 6625301 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Animals
• Decompression (veterinary)
• Dog Diseases (physiopathology)
• Dogs
• Female
• Gastric Dilatation (complications, physiopathology, veterinary)
• Hemodynamics
• Ischemia (complications, veterinary)
• Male
• Myocardial Contraction
• Pancreas (blood supply)
• Pressure
• Stomach (blood supply)
• Stomach Volvulus (complications, physiopathology, veterinary)