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Biomedical subjects

M Mathru

Publications and source records attributed to M Mathru.

58 records · Page 4Linked to original sources

Intravenous albumin administration for prevention of spinal hypotension during cesarean section.

Five percent albumin in Ringer's lactate with 5% dextrose solution (D5RL) (15 ml/kg) was prophylactically infused preanesthetically over 15 to 20 minutes to prevent hypotension during spinal anesthesia in 46 patients undergoing elective cesarean section. Apgar scores and the incidence and severity of hypotension were compared to results obtained in 41 patients who were given D5RL solution without albumin (15 ml/kg). The incidence of hypotension was significantly less in patients given 5% albumin than in patients hydrated with D5RL alone. Mean arterial pressure decreased up to 18 torr from control values in patients hydrated with D5RL but mean arterial pressure did not change significantly in patients given 5% albumin. The Apgar scores, both at 1 minute and 5 minutes, were significantly higher (p < 0.01) in infants born of mothers given albumin than in infants whose mothers were given D5RL solution. Prophylactic administration of 5% albumin in D5RL solution is an effective method for prevention of spinal hypotension.

Adolescent↗

Hypertonic acetate-alpha alpha hemoglobin for small volume resuscitation of hemorrhagic shock.

Hypertonic acetate solution in small volumes greatly improves cardiac output and corrects acid-base disturbances in hemorrhaged animals. We hypothesized that the combination of alpha alpha-crosslinked human hemoglobin (alpha alpha Hb), an oxygen carrier and vasoconstrictor, with hypertonic sodium acetate (HAHb), a vasodilator, may be effective for small volume resuscitation of hemorrhagic shock. Six pigs hemorrhaged to a mean arterial pressure of 40 mmHg for 60 min (bled volume: 23.6 +/- 2.5 ml.kg-1) received a single bolus of 4 ml.kg-1 of HAHb infused over two min. HAHb restored arterial pressure, increased systemic vascular resistance and caused a modest increase in cardiac output and SvO2, while pulmonary arterial pressure and vascular resistance were markedly increased. In two animals, transient severe hypotension and low cardiac output may have been due to acute pulmonary hypertension during injection. Compared to our previous study, in which animals received 4 ml-kg-1 of alpha alpha Hb alone, HAHb produced higher cardiac output and a smaller increase in systemic and pulmonary vascular resistance. However, slower, titrated infusions may be needed when hemoglobin solutions are combined with drugs or solutions that cause vasodilation in order to decrease the likelihood of acute hemodynamic instability.

Acetates↗