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- W2034288018 abstract "Protamine sulfate is standard therapy to reverse heparin anticoagulation. Hemodynamic responses to protamine are common, ranging from minor perturbations to cardiovascular collapse. Although severe fatal reactions occur, the relation of less extreme responses with postoperative mortality is unknown. Therefore, the authors tested the hypothesis that hemodynamic protamine reactions (systemic hypotension and pulmonary hypertension) are associated with mortality after cardiac surgery.In a university hospital setting, the authors studied 6,921 coronary bypass patients using automated anesthesia record-keeping data and quality assurance databases. Degree/duration integrals of systemic hypotension (< 100 mmHg) and pulmonary hypertension (> 30 mmHg) for the 30-min after protamine administration were assessed for linear associations with mortality using multiple logistic regression models adjusting for risk factors.Overall mortality was 2%; greater hemodynamic responses were associated with increased mortality by odds ratios of 1.28 (systemic hypotension: 95% confidence interval, 1.14-1.43; P < 0.001) and 1.27 (pulmonary hypertension: 95% confidence interval, 1.06-1.48; P < 0.001) per 150-mmHg . min increment. Proximity of the response to protamine administration strengthened the relation, which persisted after exclusion of major hemodynamic disturbances. Tests for linearity confirmed an association even at the lowest range of values for both pressure effects.Hemodynamic perturbations after protamine administration are independently related to in-hospital mortality after primary coronary artery bypass surgery; the relation is present even in the lowest observed range of values for both systemic hypotension and pulmonary hypertension. Although randomized trials are necessary to address causality, this evidence suggests that strategies that avoid or attenuate these reactions may improve patient care." @default.
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- W2034288018 date "2005-02-01" @default.
- W2034288018 modified "2023-10-14" @default.
- W2034288018 title "Hemodynamic Changes after Protamine Administration" @default.
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- W2034288018 doi "https://doi.org/10.1097/00000542-200502000-00011" @default.
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