
Maternal Sepsis — Screening & Management
Wellness bias: symptoms get dismissed because the patient still "looks well" — pregnancy's usual optimism can mask early warning signs
Normalization of deviance: small abnormal vital signs get tolerated one at a time until a pattern is missed altogether
Identifies possible "serious infection" — but the false-positive rate is too high to diagnose sepsis from this step alone
Default action: in the absence of a clear alternative diagnosis, the default is to act — treat the possible infection and gather more information, not to wait and watch
General observation: shivering, confusion, clammy skin, difficulty breathing, grimacing/guarding, poor perfusion
Look for an infection source: incision/laceration, breasts, urinary symptoms or CVA tenderness, cough or abnormal lung sounds
Actively exclude alternative diagnoses: heavy bleeding (haemorrhage), hypertension/oedema/headache (pre-eclampsia)
≥1 end-organ injury criterion present, in the setting of infection
Needs vasopressors to keep MAP >65 mmHg despite adequate fluids, plus lactate >2 mmol/L
No end-organ injury yet, but elevated lactate — increased monitoring, reassess soon
No end-organ injury, normal lactate — still needs increased monitoring, not discharge
Lactate isn't used to diagnose sepsis itself — it reflects tissue perfusion and matters most for identifying septic shock
Labor alone can raise lactate through ordinary anaerobic muscle metabolism — a woman not in labor, or more than an hour postpartum, shouldn't have lactate >2 mmol/L without explanation
Blood cultures ideally come before antibiotics — but if antibiotics were already started for a presumed infection, draw cultures at the point sepsis is diagnosed instead of withholding treatment
Blood cultures are almost never positive in chorioamnionitis alone — they can reasonably wait unless end-organ injury appears
Septic shock: 30 mL/kg crystalloid bolus within the first 3 hours — dosed on ideal body weight, not actual weight
Serious infection without end-organ injury: a more modest 500–1000 mL fluid load
Give within 1 hour of diagnosis — for both sepsis of known and unknown origin
For chorioamnionitis/endometritis, ceftriaxone + metronidazole is gaining favor (including for penicillin allergy); piperacillin-tazobactam offers single-drug broad coverage
Let your local antibiogram guide empiric choice — options vary meaningfully by site
Use CUS words — Concerned, Uncomfortable, Safety issue — when a screen is positive but the response is "let's just keep monitoring"
Time Zero
ANTIBIOTICS
Antibiotics within 1 hour of diagnosis — every minute of delay matters
Don't wait for a "sicker-looking" patient — act on the numbers and the pattern, not just appearance
Use CUS language early if the team is inclined to just keep watching
After the event: a brief, honest debrief and a clear discharge conversation about warning signs measurably changes how patients experience their recovery
