Pes Ees Ved SV V

where V0 is a constant reference volume.

The ventricle produces maximal external work to the arterial load when the ventricular and arterial elastances are equalized. In normal subjects, the ventricular elastance is nearly twice as large as arterial elastance, thereby affording maximal efficiency. However, in moderate heart failure, the two elastance values are almost identical, thereby maximizing stroke work from a given end-diastolic volume but at the expense of work efficiency. Finally, in severe failure, ventricular elastance is less than half arterial elastance values, resulting in increased potential energy and an inability to maintain either stroke work or work efficiency properly.

Was this article helpful?

0 0
Sleep Apnea

Sleep Apnea

Have You Been Told Over And Over Again That You Snore A Lot, But You Choose To Ignore It? Have you been experiencing lack of sleep at night and find yourself waking up in the wee hours of the morning to find yourself gasping for air?

Get My Free Ebook

Post a comment