pressure-time index

pres·sure-time in·dex

(PTI) (presh'ŭr tīm in'deks)
A calculation of the area under the diastolic component of the arterial blood pressure curve, used to determine left ventricular mass index and ventricular load in diastolic hypertension and chronic obstructive pulmonary disease.
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References in periodicals archive ?
(1984) Respiratory muscle oxygen consumption estimated by the diaphragm pressure-time index. Journal of applied physiology: respiratory, environmental and exercise physiology 57, 44-51.