Blood pressure · 2026
Secondary causes and renal outcomes in apparently resistant hypertension: a retrospective cohort study.
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Kvapil Tomáš, Kociánová Eva, Ramík Zdeněk, Olšr Jan, Rada Martin, Flašík Jakub, Modrák Martin, Jelínek Libor, Mizera Jan, Václavík Jan
Аннотация
OBJECTIVE: In this study, we aimed to determine the prevalence and spectrum of secondary hypertension among patients with apparently resistant arterial hypertension (aRH) and to compare the rate of decline in estimated glomerular filtration rate (eGFR) between those with primary aldosteronism (PA) and true resistant arterial hypertension (RAH).
METHODS: This retrospective cohort study involved 790 patients with aRH referred to a hypertension excellence centre. All patients fulfilled pharmacological criteria for aRH and underwent a screening protocol to evaluate secondary hypertension. We compared clinical and laboratory markers of patients with PA to those with RAH, with a median follow-up of 7 years.
RESULTS: Secondary hypertension was identified in 213 patients (27%), with PA being the most common cause (17%), followed by renovascular hypertension (4.1%) and renal parenchymal disease (3.7%). Compared to RAH patients, those with PA had significantly fewer cardiovascular comorbidities. Patients with RAH exhibited a faster decline in renal function, specifically an additional 0.7 mL/min/1.73 m2 reduction per year (95% confidence interval: 0.05-1.35, p = .03), despite similar baseline eGFR and blood pressure (BP) control. In RAH, a continuous association between higher average 24-h systolic BP and a faster decline in renal function was observed.
CONCLUSION: Systematic screening in aRH reveals a high prevalence of secondary hypertension, particularly PA. Patients with RAH showed significantly worse renal outcomes compared to those with PA, with faster renal decline associated with higher BP within the RAH group, underscoring the need for early diagnosis and strict BP management.
METHODS: This retrospective cohort study involved 790 patients with aRH referred to a hypertension excellence centre. All patients fulfilled pharmacological criteria for aRH and underwent a screening protocol to evaluate secondary hypertension. We compared clinical and laboratory markers of patients with PA to those with RAH, with a median follow-up of 7 years.
RESULTS: Secondary hypertension was identified in 213 patients (27%), with PA being the most common cause (17%), followed by renovascular hypertension (4.1%) and renal parenchymal disease (3.7%). Compared to RAH patients, those with PA had significantly fewer cardiovascular comorbidities. Patients with RAH exhibited a faster decline in renal function, specifically an additional 0.7 mL/min/1.73 m2 reduction per year (95% confidence interval: 0.05-1.35, p = .03), despite similar baseline eGFR and blood pressure (BP) control. In RAH, a continuous association between higher average 24-h systolic BP and a faster decline in renal function was observed.
CONCLUSION: Systematic screening in aRH reveals a high prevalence of secondary hypertension, particularly PA. Patients with RAH showed significantly worse renal outcomes compared to those with PA, with faster renal decline associated with higher BP within the RAH group, underscoring the need for early diagnosis and strict BP management.