Anaesthesia Coffee Break Categorisation exercises to drill for the viva exam!
Mar 16, 2021
Explore the fascinating world of respiratory physiology as the hosts categorize key topics for focused exam preparation. Discover the intricacies of respiratory drive, the causes of hypoxaemia and hypercapnia, and the factors influencing CO2 carriage in blood. Delve into concepts like A-a gradient, venous admixture, and the work of breathing. Their performance tips on eliminating distractions and practicing concise, categorized responses will enhance your exam efficiency. It's a deep dive into essential knowledge for medical practitioners!
AI Snips
Chapters
Transcript
Episode notes
Use PaCO2 = CO2 Prod / Alveolar Ventilation
- For hypercapnia answer with the PaCO2 equation: CO2 production over alveolar ventilation.
- Then discuss causes increasing production (malignant hyperthermia, sepsis) and causes reducing ventilation (neuromuscular, chest wall, underventilation).
Carriage: AV Difference Driven By Carbamino
- Bicarbonate carries most CO2 in blood, but the arterial–venous CO2 difference is driven disproportionately by carbamino compounds.
- Remember the AV difference column in Nunn's table to avoid common candidate confusion.
Remember Conditions That Alter 2,3‑DPG
- When asked about 2,3‑DPG, list factors that change it: hypoxia, chronic lung disease, altitude, exercise, pregnancy and stored blood.
- Note stored blood has low 2,3‑DPG, impairing O2 unloading.