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Systemic vascular hemodynamics. Systemic vascular hemodynamics in five sheep challenged with alternate exposure to hydrogen sulfide (H2S) (gray bars) by ventilation of an extracorporeal membrane lung with 0 or 100 ppm H2S in air, 200 ppm H2S in air and 300 ppm H2S in air for 1-hour intervals each. Data are presented as means ± standard error of the mean. MAP, mean arterial pressure; CO, cardiac output; SVR, systemic vascular resistance; ppm, parts per million.
