Maternal early warning criteria

Systolic BP (mmHg)	<90 or >160
Diastolic BP (mmHg)	>100
Heart rate (beats per minute)	<50 or >120
Respiratory rate (breaths per minute)	<10 or >30
Oxygen saturation on room air, at sea level, %	<95
Oliguria, mL/hour for ≥2 hours	<35
Maternal agitation, confusion, or unresponsiveness; patient with preeclampsia reporting a non-remitting headache or shortness of breath

These triggers cannot address every possible clinical scenario that could be faced by an obstetric clinician and must not replace clinical judgment. As a core safety principle, bedside nurses should always feel comfortable to escalate their concerns at any point.

BP: blood pressure.

From: Mhyre JM, D'Oria R, Hameed AB, et al. The maternal early warning criteria: A proposal from the national partnership for maternal safety. Obstet Gynecol 2014; 124:782. DOI: 10.1097/AOG.0000000000000480. Copyright © 2014 American College of Obstetricians and Gynecologists. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.

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