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Figure 3 | Cardiovascular Ultrasound

Figure 3

From: Arterial pressure changes monitoring with a new precordial noninvasive sensor

Figure 3

Second heart sound (S2) amplitude recording simultaneously with diastolic blood pressure during stress. Left panel: similar S2-frequency trend during stress (blue symbols) and recovery (red symbols) in a patient with normal exercise pressure changes and without post exercise hypotension. Middle panel: S2-frequency trend during stress (blue symbols) and recovery (red symbols) in a patient with exercise induced diastolic hypertension and post exercise hypotension. Right panel: flat-negative S2-frequency trend during dipyridamole stress induced hypotension.

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