Onda S´para avaliar reserva. Simples e fácil.

Across all subjects the strongest relationship with peak oxygen uptake (pVO2) was with peak left ventricular systolic tissue velocity (S′) during exercise (r = 0.84, P < 0.001
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Conclusion
There is a very strong relationship between measurements of S′ during exercise and exercise capacity. The previously observed poor correlation with standard measures of systolic and diastolic cardiac function may be explained both by the load dependence of parameters such as ejection fraction and by reliance on resting as opposed to exercise assessment.
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Muito simples e rápido. É só pedalar e fazer o Doppler tecidual.
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E serve para várias patologias
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