respiratory – Critical Care Info

Oxygenation Index Calculator

02/04/202623/09/2025 by Dr Stuart McLay

Assess severity of respiratory failure using oxygenation index for escalation and ECMO consideration.

PaO₂/FiO₂ Ratio Calculator

02/04/202608/08/2025 by Dr Stuart McLay

Calculate P/F ratio to classify severity of hypoxaemia and ARDS.

I’m going to focus on Arterial blood gases here. Venous gases are close enough in well people, but beware in critical illness there is divergence between arterial and venous samples, particulary in CO2, lactate and pH. Method FiO₂ Calculator 713 x 0.21 = 150 mm Hg Differential Diagnosis HAGMA (CATMUDPILES or LTKR) NAGMA (CAGE, ABCD, … Read more

Intercostal Catheter (ICC) Kit List

02/04/202619/05/2021 by Dr Stuart McLay

Checklist of equipment required for safe insertion of an intercostal catheter for management of pneumothorax or pleural effusion.