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19th February 2025
A 32-year-old female who is 16 weeks pregnant has acute onset shortness of breath for 1 day.
A 32-year-old female who is 16 weeks pregnant has acute onset shortness of breath for 1 day. This is associated with chest pain that worsens with inspiration. She has no other past medical history.
On examination, her chest is clear, she has no calf tenderness, redness or swelling. She is saturating 95% on room air, HR 105 bpm, RR 24/minute, BP 125/79 mmHg.
Her blood tests show:
| Haemoglobin (g/L) 115 (115-160) | Sodium (mmol/L) 138 (135-145) |
| Platelets (10⁹/L) 390 (150-400) | Potassium (mmol/L) 4.3 (3.5-5.0) |
| White blood cells (10⁹/L) 6.7 (4.0-11.0) | Urea (mmol/L) 6.4 (2.0-7.0) |
What is the most appropriate next investigation?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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