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Evidence for treating hypertension in patients with asymptomatic aortic valve stenosis(AS) is scarce. Given the paucity of data on the relationship between syncope and antihypertensive treatment in aortic stenosis. This study sought to investigate this association in patients admitted to our hospital. A total of 158 patients with asymptomatic moderate or severe aortic stenosis were analyzed. Follow-up was conducted by clinic visit, telephone contact, or review of electronic medical records. Outcomes were syncope. Hypertension were documented in 90 of the 158 patients with moderate or severe AS, and 77 of them received antihypertensive medications. During an average 28 months follow-up period, the occurrence of syncope was observed in 13 patients. Among them, 8 were in antihypertensive group (n = 77) and 5 in normotensive group (n = 68). There was no significant difference in incidence of syncope between the two groups. Patients with treated hypertension and syncope had a lower stroke volume index (SVi), a higher valve arterial impedance (Z VA ), a smaller SAC than those without. Kaplan-Meier analysis showed that there was no significant difference in syncope cumulative incidence between antihypertensive group and normotensive group (log rank  P  = .478). Multivariate cox regression analysis showed that both Z VA  (hazard ratio:19.006, 95% confidence interval: 4.664 to77.448; P  = .002) and LVMI (hazard ratio:1.484, 95% confidence interval: 1.427 to 5.157; P  = .016) were associated with development of syncope, whereas hypertension were not related independently to syncope (hazard ratio:0.935, 95% confidence interval: 0.786 to3.173;  P  = .869). In patients with moderate or severe AS, concomitant hypertension, and antihypertensive treatment didn’t increase the occurrence of syncope, whereas higher Z VA  was independently associated with greater risk of syncope.

Antihypertensive treatment and risk factors for syncope in asymptomatic aortic stenosis patients with hypertension