Table 4: Baseline and after sinus carotid massage characteristics of the two subgroups.

Baseline SAP Mean SCM SAP Mean fall SAP Symptomatic subjects OH Patients no. 16 147 (±14) 87 (±31) 59 (±26) 5 (31%) 5 (31%) Controls no. 30 144 (±13) 106 (±19) 38 (±13) 1 (3%) 3 (10%) ns <0.01 <0.05

SAP: systolic arterial pressure in mmHg. OH: orthostatic hypotension.