in the carotid sinus syndrome group we observed a greater systolic blood pressure reduction from the supine to standing position ( 20 +/- 19 vs 14 +/- 11 mmhg ) , a lower orthostatic pressure ( 111 +/- 23 vs 120 +/- 21 mmhg ) and a greater incidence of orthostatic hypotension ( defined as a blood pressure reduction greater than or equal to 50 mmhg or greater than or equal to 20 mmhg when orthostatic pressure was lower than 100 mmhg ) ( 35 % vs 17 % ) .
C0020651
orthostatic hypotension
C0020649
blood pressure reduction