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Table 1 Key differences between focused cardiac ultrasound (FoCUS) and transthoracic echocardiography (TTE)

From: Focused cardiac ultrasound in preoperative assessment: the perioperative provider’s new stethoscope?

Focused cardiac ultrasound (FoCUS)Transthoracic chocardiography (TTE)
Qualitative ultrasound assessment of the heartQuantitative ultrasound assessment of the heart
Requires practitioners to be familiar with a limited number of transthoracic cardiac views, a limited number of pathologies, and simple imaging modes (B-mode ± colour Doppler)Requires practitioners to have comprehensive training of all transthoracic cardiac views, ultrasound imaging modes, and ultrasound-relevant cardiac pathologies
Can be performed using simple equipmentRequires advanced equipment
Always goal-directedCan be goal-directed (limited) or comprehensive
Always performed and interpreted at the point-of-careUsually performed at the bedside and interpreted separately