ODOBGYNDECODED

← All presentations

Dyspnoea in pregnancy

Immediate red flags:
  • SpO2 <95%
  • Collapse/chest pain
  • Unilateral leg swelling (PE)
  • Fine crepitations (pulmonary oedema PET)
Urgent workup:
  • ABG/SpO2, ECG, CXR (safe)
  • Echo if unclear
  • CTPA/V-Q per pathway

Structured differential — act in priority order

PriorityConditionKey featuresAction
CANNOT MISS
Pulmonary embolism
Pleuritic pain+risk factors
CANNOT MISS
Pulmonary oedema of severe PE/fluids
Hypertension+crepitations
Sit up, stop fluids, frusemide
COMMON
Asthma exacerbation
Wheeze history
Full asthma treatment (undertreatment harms fetus)
COMMON
Physiological dyspnoea
Gradual, normal investigations
Diagnosis of exclusion
CONSIDER
Anemia severe
Pallor, Hb <7
CANNOT MISS
Amniotic fluid embolism
Peripartum collapse+DIC

First moves

  1. Left-lateral tilt + O2 immediately when distressed