Airway

EASy PDA

Pre-intubation Assessment for the Physiologically Difficult Airway

EASy PDA extends the MAP protocol for pre-intubation hemodynamic assessment. It identifies patients at risk of cardiovascular collapse during intubation by evaluating cardiac function and volume status before induction.

Why PDA Matters

Peri-intubation cardiovascular collapse is a significant cause of morbidity and mortality in critically ill patients. The “physiologically difficult airway” concept recognizes that hemodynamic instability — not just anatomic difficulty — can make intubation dangerous.

Identifies patients at high risk of peri-intubation collapse

Guides pre-induction optimization (fluid, vasopressor, inotrope)

Uses the same 6 subcostal views as EASy MAP

Adds focused pre-induction checklist

Integrates with anesthetic planning

Risk Indicators

The following EASy MAP findings suggest high risk for peri-intubation collapse:

Severely reduced LV function

Induction agents worsen cardiac output

RV dilation with septal bowing

Positive pressure ventilation reduces venous return

Flat IVC with respiratory variation

Profound hypovolemia — needs volume before induction

Pericardial effusion with tamponade physiology

Immediate intervention before intubation

Bilateral B-lines with LV dysfunction

Cardiogenic pulmonary edema — needs diuresis/inotropes

Learn EASy PDA

Watch the tutorial videos and explore clinical cases.