Adherence to ESC guidelines for antihypertensive drug therapy: real-world survey from an EU country

Abstract

Abstract Background Achieving optimal BP control in hypertensive patients (pts) remains a continuous challenge worldwide. Multiple factors are responsible for the low rates of BP control with suboptimal drug choice playing a key role. Practice guidelines should serve as evidence based foundation for optimal antihypertensive drug therapy but their impact in the real-world is variable. Purpose This retrospective study aimed: 1. To assess the prescription pattern of main classes of antihypertensive drugs and its association with comorbidities. 2. To compare prescription before and after the publication of the 2018 ESC/ESH guidelines for management of arterial hypertension, translated into local language (in 2019). Thus, prescriptions in the years 2018 and 2020 were compared. Dual combination of ACEi/ARB + CCB/thiazide-like diuretics (THI) or triple combination of ACEi/ARB + CBB + THI were considered as guidelines directed first line drugs (FLAD) i.e. adherence to guideline. Spironolactone (MRA) was considered as recommended drug for patients requiring ≥4 drugs. Methods We analysed prescribed drug therapy in a large patient cohort from the years 2018 and 2020 with 264 237 and 272 934 hypertensive pts, respectively. Pts were considered hypertensive after meeting at least one of two criteria: 1. Having been prescribed ≥ 121 standard drug doses of antihypertensive drugs in the year before the studied period. 2. Having at least 2 medical visits with the diagnosis of hypertension within 2 years before the studied period. Following comorbidities were considered as potential modifiers of drug therapy: ischemic heart disease (IHD), chronic heart failure (CHF), atrial fibrillation (AF), diabetes (DM) and chronic kidney disease (CKD). Results Overall, first line therapy was prescribed to 21.5% and 22.4% of pts in the year 2018 and 2020, respectively (p<0.0001). In pts taking ≥3 drugs 30.4% did not use THI, in those taking ≥4 drugs only 10.7% used spironolactone (MRA). Selected results are in the attached table. Conclusion Adherence to guideline recommended FLAD in this large survey improved but remained low during the first year after publishing ESC 2018 guidelines: only 22.4% of pts received FLAD in this cohort where 58.6% were free of comorbidities. In pts with AF, the use of FLAD was the lowest with 7.3%. Preferred use of BB and low use of THI and MRA were mostly behind this trend. BB (alone or in combination) were the most prescribed drug group – to 57.3% of pts both in 2018 and 2020. Their prescription was high in all pts with comorbidities, notably worrisome for diabetic pts (66.0%). Continuous efforts to improve dissemination of knowledge of FLAD according to guidelines appear mandatory.Attached table