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- W4243563596 abstract "The gastric distention-volvulus (GDV) syndrome occurs commonly in large-breed dogs and may prove fatal in 15–68% of cases. Approximately 43% of cases with gastric distention (GD) or volvulus develop cardiac arrhythmias that can contribute to mortality. Most of these arrhythmias are ventricular in origin and ventricular fibrillation (VF) may be the cause of death. This study used an iatrogenic model of acute GD to investigate the prevalence of ventricular arrhythmias during acute GD and its recovery, if programmed electrical stimulation (PES) may uncover tendency to VF, if the Q-T interval corrected for heart rate (Q-Tc) of the electrocardiogram (ECG) predicts tendency to VF, and if hemodynamic changes predate VF. Eleven beagles, anesthetized with morphine and alpha-chloralose, and instrumented so that vascular pressures, cardiac output, and PES could be recorded, were used. Five were unperturbed, whereas acute GD to a pressure of 30 mm Hg for 1.5 hours was produced in 6 others. The results were as follows. No dogs with GD developed spontaneously occurring arrhythmias. VF was produced in no dogs by conventional PES, but occurred in all dogs (P < .05) with GD and none of the controls, using accelerated ventricular pacing. The Q-Tc interval of the ECG prolonged minimally in dogs with GD, and shortened (P < .05) in controls. Some hemodynamic changes did predate VF. In conclusion, dogs with acute GD have a tendency for VF, which may be uncovered by accelerated PES. The mechanism for the vulnerability to arrhythmia with GD is unknown." @default.
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- W4243563596 date "2000-07-01" @default.
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- W4243563596 title "Effects of Acute Gastric Distention and Recovery on Tendency for Ventricular Arrhythmia in Dogs" @default.
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- W4243563596 doi "https://doi.org/10.1111/j.1939-1676.2000.tb02253.x" @default.
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