Table 1.

Updated definition of haemodynamic instability related to acute pulmonary embolism

(1) Cardiac arrest	(2) Obstructive shock (based on [20–22])	(3) Persistent hypotension
Need for cardiopulmonary resuscitation	Systolic BP < 90 mmHg, or vasopressors required to achieve a BP ≥ 90 mmHg despite adequate filling status	Systolic BP < 90 mmHg, or systolic BP drop ≥ 40 mmHg, either lasting longer than 15 min and not caused by new-onset arrhythmia, hypovolaemia, or sepsis
	And
	End-organ hypoperfusion (altered mental status; cold, clammy skin; oliguria/anuria; increased serum lactate)

BP blood pressure