Biomedical subjects
Publications and source records attributed to B Prasad.
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Nine adult bullocks were used for this study. The auricular artery was found to be convenient for collecting arterial blood samples. Samples were also taken from the jugular and auricular veins. The mean values of blood gas analyses from these animals are recorded.
Glyceryl guaiacolate was used with thiopentone sodium for general anaesthesia in 10 clinically healthy male buffalo calves. When the animals were in the stage of surgical anaesthesia, there was marked hypotension and tachycardia along with a decrease in central venous pressure, tidal volume, partial pressure of oxygen in arterial blood and venous plasma potassium. Hyperglycaemia was another consistent feature. The changes in the acid base status were mild and inconsistent.
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Experimental uremia created by obstructing the urethra of 7 cross-bred bulls was associated with significant (P less than 0.05) increases in PCV, blood urea nitrogen concentration, arterial and venous pH and PCO2, arterial bicarbonate, and base excess. Total serum protein concentration decreased nonsignificantly. Arterial PO2 reduced significantly during later stages of uremia. Arterial and venous oxygen saturation, arteriovenous oxygen difference, oxygen extraction ratio, and arteriovenous pH difference were not affected significantly. Uremia was characterized by progressive metabolic alkalosis with, as a compensation, hypercapnia, and arterial hypoxemia. There was no evidence of systemic shunting of blood except in 1 animal.
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