( ( In ( hypertensive patients ) ) ( , ( ( blood pressure ) ( ( is ( ( decreased ( with ( ( little or ) ( no change ) ) ) ) ( in ( ( ( ( ( ( heart rate ) , ) ( stroke volume ) ) , ) or ) ( cardiac output ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (JJ hypertensive) (NNS patients))) (, ,) (NP (NN blood) (NN pressure)) (VP (VBZ is) (VP (VBN decreased) (PP (IN with) (NP (NP (RB little)) (CC or) (NP (DT no) (NN change)))) (PP (IN in) (NP (NP (NN heart) (NN rate)) (, ,) (NP (NN stroke) (NN volume)) (, ,) (CC or) (NP (JJ cardiac) (NN output)))))) (. .)))
In hypertensive patients, blood pressure is decreased with little or no change in heart rate, stroke volume, or cardiac output.
(ROOT (S (NP (NP (DT The) (NN term) (JJ cardiac) (NN output)) (, ,) (VP (VBN calculated) (PP (IN by) (S (VP (VBG multiplying) (NP (NN heart) (NNS contractions)) (PP (IN by) (NP (NN stroke) (NN volume))))))) (, ,)) (VP (VBZ means) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (NP (NN blood)) (VP (VBN pumped) (PP (IN by) (NP (NP (DT the) (NN heart)) (PP (IN in) (NP (CD one) (NN minute)))))))))) (. .)))
The term cardiac output, calculated by multiplying heart contractions by stroke volume, means the volume of blood pumped by the heart in one minute.