The effectiveness of a specialist Hypertension Clinic in reducing blood pressure: Factors determining blood pressure response

OBJECTIVES: We retrospectively assessed both blood pressure response to management in a specialist Hypertension Clinic and the predictors of response. DESIGN: Retrospective data audit. SETTING: Hypertension Clinic at Guy’s and St Thomas’ Hospitals, London, UK. PARTICIPANTS: One hundred and twenty-two sequential patients attending the clinic between January 2017 and October 2018. Patients were excluded if they had previously been seen in the clinic, failed to attend their initial appointment or did not return after their initial appointment. OUTCOME MEASURE: Change in blood pressure readings between first and last recorded appointments. RESULTS: Systolic blood pressure decreased from 149 ± 20 mmHg to 140 ± 17 mmHg, and diastolic blood pressure from 92 ± 13 to 86 ± 1 mmHg, between the first and last recorded appointments (P < 0.05 for each). Those patients who reached target blood pressure were significantly younger than those who did not (age 45 ± 14 versus 52 ± 17 years, P = 0.0171); however, the degree of blood pressure reduction was independent of age, and younger subjects had a baseline blood pressure significantly lower than older subjects. Sex, body mass index and lifestyle interventions had an important effect on blood pressure reduction; however, these were not associated with attainment of target blood pressure. CONCLUSION: Specialist hypertension input is effective in helping patients to achieve target blood pressure, especially so in younger as compared to older hypertensive patients, but this appears to be related to the fact that blood pressure in younger patients is already closer to target at baseline. Blood pressure reduction is greater in women, those with higher body mass index and those who receive lifestyle interventions.