Measurements: - The risk of myocardial injury is greater if mean arterial pressure is <55 mmHg. No significant association was found between myocardial injury and other ranges of blood pressure. When compared to patients who spent no time with a mean arterial blood pressure <55 mmHg, increased risk of myocardial injury varied from 1.3x (1-5 min. MAP <55 mmHg) to 1.8x (>20 min. MAP <55 mmHg) (1).
References: - Michael Walsh et al. Relationship between Intraoperative Mean Arterial Pressure and Clinical Outcomes after Noncardiac Surgery: Toward an Empirical Definition of Hypotension. Anesthesiology. 2013;119:507-515: full text | pdf.
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