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OBRx — Obstetric Reference & Inpatient Order Set Module
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Maternal Sepsis in Pregnancy — OBRx Inpatient Order Set

Hospital-style draft for pregnant and postpartum patients with suspected serious infection, maternal sepsis, or septic shock.

Maternal sepsis and septic shock are medical emergencies. Begin treatment and resuscitation immediately when clinically suspected. Do not delay antibiotics or source control because of pending studies when the patient is unstable.
Local adaptation required before implementation. Verify formulary, antibiogram, renal-dosing standards, severe beta-lactam allergy pathway, ICU workflow, and nursing protocols.

1. Admission / Level of Care / Team Activation

Admit / transfer patient to: ☐ ICU ☐ Step-down / high-acuity obstetric unit ☐ Labor & Delivery ☐ Emergency Department observation
Activate sepsis response / rapid response team now.
Notify OB attending / MFM now.
ICU / critical care consultation.
Anesthesia consultation.
Infectious disease consultation.
Additional consults: ☐ Surgery ☐ Urology ☐ Interventional Radiology ☐ Cardiology ☐ Neonatology ☐ Pharmacy ☐ Other: ______________________

2. Recognition / Screening / Clinical Indication

Initial pregnancy-adjusted screen

Temperature <36°C or ≥38°C
Heart rate >110 bpm, persistent on recheck
Respiratory rate >24/min
WBC >15,000, <4,000, or >10% bands
Use local workflow; a common trigger is any 2 of 4 followed by bedside evaluation.

End-organ injury / high-risk findings

Altered mental status / toxic appearance
O2 saturation <92% or new oxygen requirement
Urine output <60 mL over 2 hours
Platelets <100,000
Bilirubin >2 mg/dL
Creatinine ≥1.2 mg/dL or doubled from baseline
Lactate >2 mmol/L if not in labor / marked elevation in labor

Clinical classification

Suspected serious infection without definite end-organ injury
Maternal sepsis
Septic shock

Suspected source

Urinary / pyelonephritis
Intraamniotic infection / chorioamnionitis
Postpartum endometritis
Septic abortion / retained products of conception
Cesarean / wound / pelvic abscess
Necrotizing soft tissue infection
Pneumonia / respiratory infection
Bacteremia / line infection
Unknown source
Other source: __________________________

3. Nursing Orders / Monitoring

Vital signs / bedside care

Vital signs q15 min until stable, then per unit protocol.
Continuous pulse oximetry.
Continuous cardiac telemetry.
Strict intake and output.
Foley catheter for hourly urine output monitoring if unstable or oliguria concern.
Daily weight if ongoing critical illness.

Obstetric monitoring

Assess uterine tenderness / fundal tenderness.
Assess vaginal bleeding / lochia / discharge.
Evaluate labor status and membrane status.
Continuous fetal monitoring if viable and maternal status permits.
Notify physician immediately for worsening hypotension, hypoxia, oliguria, altered mental status, severe pain out of proportion, or fetal deterioration.

4. IV Access / Fluids / Hemodynamics

Insert 2 large-bore peripheral IV lines.
Central venous access if needed per ICU / anesthesia.
Arterial line if indicated.

Balanced crystalloid resuscitation

Balanced crystalloid: ☐ Lactated Ringer’s ☐ Plasma-Lyte ☐ Other: __________________
Initial bolus 1000 mL IV now
Additional 500–1000 mL IV bolus based on response
Goal total first 1–3 hours: 1–2 L IV for hypotension or suspected hypoperfusion
Maintenance fluid: __________________________
Reassess after each bolus for MAP, pulse, respiratory effort, lung exam, urine output, mental status, capillary refill, and lactate trend.
Do not use starches or gelatin-based resuscitation fluids.

Vasopressors

Start norepinephrine infusion per hospital/ICU protocol if hypotension persists after adequate fluids.
Norepinephrine concentration: ____________________
Initial rate: ____________________
Titrate to MAP ≥65 mmHg or individualized goal
Consider hydrocortisone for vasopressor-dependent septic shock per ICU team.

5. Laboratory / Cultures / Imaging

Laboratory orders

CBC with differential now
CMP / BMP now
AST / ALT / bilirubin / alkaline phosphatase
Creatinine / renal function
Serum lactate now
Repeat lactate in ______ hours
PT / INR / aPTT / fibrinogen
Type and screen
Type and cross ______ units PRBC if indicated
ABG / VBG if indicated
Bedside glucose and q______ monitoring

Microbiology / imaging

Blood cultures x2 sets before antibiotics if this will not materially delay therapy.
Urinalysis and urine culture
Cervical / vaginal cultures as indicated
Wound culture
Respiratory viral testing / sputum culture as indicated
Portable chest x-ray
Renal ultrasound
Pelvic ultrasound
CT abdomen/pelvis if source control target suspected
Other imaging: __________________________

6. Source-Specific Antibiotic Panels

Administer empiric broad-spectrum antibiotic therapy as soon as possible. First dose should ideally begin within 1 hour when maternal sepsis is likely or shock is present.

These are build-ready default panels for local review, not a substitute for pharmacy approval or local antibiogram. Adjust for renal function, BMI/weight policies, severe beta-lactam allergy, resistant organisms, and postpartum/lactation considerations.

Undifferentiated severe sepsis / septic shock / unclear source

Piperacillin-tazobactam 4.5 g IV q6h
OR cefepime 2 g IV q8h + metronidazole 500 mg IV q8h
Add vancomycin per pharmacy dosing if MRSA risk, line infection, severe SSTI, or hospital-acquired concern
Severe beta-lactam allergy pathway: ____________________________________________
Pharmacy to verify renal dosing and weight-based adjustments.
Infectious disease consult.
Use this panel when the patient is unstable or the source is unclear and broad abdominal/pelvic/urinary coverage is needed.

Pyelonephritis / urosepsis

Ceftriaxone 1–2 g IV q24h
OR cefepime 2 g IV q8–12h if severe illness, prior resistant organism, or healthcare exposure
Consider piperacillin-tazobactam 4.5 g IV q6h if shock or polymicrobial concern
Urine culture before antibiotics if feasible without delay
Renal ultrasound now
Consider CT / urology consult if obstruction, stone, or failure to improve
Broaden therapy for septic shock, obstruction, prior ESBL, or recent hospitalization.

Postpartum endometritis / septic abortion / retained products / uterine source

Clindamycin 900 mg IV q8h + gentamicin ______ mg/kg IV q24h (or institution-specific dosing)
OR ampicillin-sulbactam 3 g IV q6h
OR piperacillin-tazobactam 4.5 g IV q6h if severe illness / shock / broad pelvic-abdominal coverage desired
Pelvic ultrasound now
Evaluate for retained products / uterine contents requiring evacuation
Consider GAS / toxin-mediated disease if rapid progression, severe pain, or disproportionate shock
Add clindamycin if toxin suppression desired and not already included
If uterine source is confirmed or strongly suspected, prompt evacuation or delivery may be necessary for source control.

Intraamniotic infection / chorioamnionitis / labor-associated infection

Ampicillin 2 g IV q6h + gentamicin ______ mg/kg IV q24h (or institution-specific dosing)
Add anaerobic coverage per local pathway when postpartum, cesarean, severe infection, or polymicrobial concern is present: ____________________________
Delivery planning per obstetric indication and maternal status
Do not delay maternal stabilization for fetal interventions
Tailor route and continuation of therapy to delivery timing, route of delivery, and postpartum course.

Cesarean wound / pelvic abscess / severe skin-soft tissue / necrotizing infection

Piperacillin-tazobactam 4.5 g IV q6h + vancomycin per pharmacy dosing
Add clindamycin 900 mg IV q8h if necrotizing infection, streptococcal toxic shock, or clostridial process is suspected
Surgical consultation STAT
CT / ultrasound to define abscess if patient stable enough
Debridement / drainage / re-exploration now if indicated
Pain out of proportion, crepitus, rapid progression, bullae, skin anesthesia, or refractory shock should trigger immediate operative evaluation.

Pneumonia / respiratory source

Community-acquired pneumonia pathway: ____________________________________________
Hospital-acquired / ventilator-associated pathway: ____________________________________________
Add antiviral therapy if influenza is suspected: ____________________________________________
Respiratory viral testing / sputum culture / chest imaging
Escalate oxygen / ICU / anesthesia support as needed
Because CAP/HAP protocols vary, this tab is designed for local respiratory-order-set linkage.

Antibiotic administration details

First antibiotic dose STAT now
Record antibiotic start time: ______________________
Pharmacy to verify allergy history, renal dosing, IV compatibility, and local restricted-drug policy.
Narrow therapy when culture data, operative findings, or imaging identifies source and susceptibilities.

7. Source Control Orders

Evaluate immediately for drainable, removable, obstructive, necrotic, or uterine source.
OB/GYN procedure planned: ☐ D&C ☐ D&E ☐ Manual uterine evacuation ☐ Delivery ☐ Cesarean delivery ☐ Other: ______________________
Surgical procedure planned: ☐ Debridement ☐ Abscess drainage ☐ Re-exploration wound ☐ Hysterectomy ☐ Other: ______________________
Urologic source control: ☐ Nephrostomy ☐ Ureteral stent ☐ Other: ______________________
Source control target identified at: ______________________
Planned source control time: ______________________

8. Obstetric / Fetal Management

Confirm gestational age and fetal viability.
Continuous fetal monitoring if viable and feasible.
Ultrasound for fetal status / placenta / retained products as indicated.
Neonatology consult if risk of preterm delivery.
Betamethasone if preterm delivery risk and clinically appropriate.
Magnesium sulfate for fetal neuroprotection if indicated and not contraindicated.
Maternal stabilization takes priority over fetal intervention.
Delivery indicated for: ☐ Obstetric indication ☐ Uterine source control ☐ Maternal deterioration ☐ Other: ______________________

9. Respiratory / Supportive Care / VTE Prophylaxis

Respiratory support

Supplemental oxygen to maintain maternal oxygen saturation goal ______%
High-flow nasal cannula / noninvasive support per ICU team
Intubation / mechanical ventilation if indicated

Supportive care

Acetaminophen ______ mg PO/IV q______ PRN fever/pain
Insulin protocol if glucose >180 mg/dL
SCDs
Pharmacologic VTE prophylaxis if not contraindicated: ____________________________________________
Lactation / postpartum medication review if applicable

10. Escalation / Provider Notification Parameters

Notify provider immediately for SBP < ______ or MAP < ______
Notify provider immediately for HR > ______ persistent
Notify provider immediately for RR > ______ or new respiratory distress
Notify provider immediately for O2 saturation < ______ despite support
Notify provider immediately for urine output < ______ mL/hr
Notify provider immediately for rising lactate, severe pain out of proportion, suspected necrotizing infection, altered mental status, or worsening fetal status.

11. Documentation / Quality / Disposition

Record recognition time: ______________________
Record blood culture collection time: ______________________
Record antibiotic administration time: ______________________
Record initial fluid bolus start/completion time: ______________________
Record vasopressor start time if applicable: ______________________
Record source control time if performed: ______________________
Daily review of cultures, imaging, source control, antibiotic narrowing, and level of care.
Multidisciplinary debrief if ICU admission, shock, emergency surgery, or severe maternal morbidity.
Survivorship / family support plan if prolonged ICU course or septic shock.

12. Provider Authentication

Ordering clinician signature
Date
Time
Printed name / credentials
Contact / pager
Co-sign if required

Disclaimer

This order set is an educational template for instructional purposes only. It does not replace institutional protocols, national guidelines (e.g., ACOG, RCOG), or consultation with maternal–fetal medicine, nutrition, psychiatry, and other specialists.

Medication doses, fluid rates, and monitoring schedules must be verified against current institutional policies, pharmacy guidance, and patient-specific factors (e.g., renal/hepatic function, gestational age, comorbidities, and fetal status). For EHR implementation (e.g., Cerner/Epic), each bullet should be mapped to local orderables and adjusted to match system-specific naming, dosing defaults, and routing.

Detailed References
  1. Society for Maternal-Fetal Medicine Consult Series #67: Maternal sepsis.
  2. California Maternal Quality Care Collaborative. Improving Diagnosis and Treatment of Obstetric Sepsis, V2.0.
  3. Associated educational summary reflecting the updated two-step recognition pathway and end-organ injury criteria.
  4. Local hospital antibiogram, pharmacy dosing policy, allergy pathway, and critical care protocols should be incorporated before go-live.

This page is intended as a hospital build template. Final drug choices, doses, renal adjustments, weight-based dosing, infusion instructions, and respiratory-source pathways should be approved locally.