A question straight from the latest MRCP Part 1 exam! We’ll be going through many such recently asked questions inside our sessions. On 28th September 2025, we’re running a focused webinar designed to clear your doubts and sharpen your MRCP prep. Tap the link to sign up and move closer to your goal! forms.gle/x2uRbLYHwkykmw586
2 months ago | 1
Intellect Medicos
A 67-year-old man with a 40-pack-year smoking history, known COPD, presents with worsening shortness of breath over the past 12 hours. He has had several similar admissions in the past. On arrival, he is tachypnoeic and using accessory muscles of respiration. His oxygen saturation is 82% on room air. On auscultation, there are widespread wheezes and coarse crackles bilaterally.
Arterial blood gas on 28% oxygen:
pH: 7.30
PaCO₂: 7.1 kPa
PaO₂: 6.6 kPa
What is the most likely cause of his hypoxaemia?
2 months ago | [YT] | 86