Cardiac output may be increased in

Cardiac output may be increased in children or young
adults during the earliest stages of essential hypertension, but
by the time hypertension is established in middle life the pre-
dominant haemodynamic abnormality is an elevated periph-
eral vascular resistance. With ageing, elastic fibres in the aorta
and conduit arteries are replaced by less compliant collagen
causing arterial stiffening and systolic hypertension, which is
common in the elderly.

Results (Indonesian) 1:

Output jantung dapat ditingkatkan dalam anak-anak atau mudaorang dewasa selama tahap-tahap awal hipertensi esensial, tetapipada saat hipertensi didirikan di tengah kehidupan pra-kelainan hemodinamik dominan adalah peningkatan periph-memeriksa tahanan. Dengan penuaan, elastis serat di aortadan arteri conduit digantikan oleh kurang sesuai kolagenmenyebabkan arteri kaku dan sistolik hipertensi, yangumum pada orang tua.