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Adherence to Treatment, Arterial Stiffness and Cognitive Function in Irbesartan- Treated Newly Diagnosed Hypertensive
Rigas G Kalaitzidis1, Olga Balafa1, Evangelia Dounousi1
1Hypertension Excellence Centre, Division of Nephrology, University Hospital of Ioannina, Ioannina, Greece.
Insights
Angiotensin II receptor blockers (ARBs) improved arterial stiffness and cognitive function in hypertensive patients. This study highlights ARBs
Area of Science:
- Cardiovascular Medicine
- Neuroscience
- Pharmacology
Background:
- Non-adherence to antihypertensive medications compromises blood pressure (BP) control.
- Limited data exist on the relationship between adherence to antihypertensive agents and arterial stiffness (AS).
- The causal link between arterial stiffness and cognitive dysfunction (CO/DY) remains unclear.
Purpose of the Study:
- To investigate the effects of irbesartan monotherapy on arterial stiffness, cognitive function, and BP in hypertensive patients.
- To assess the adherence rates to irbesartan monotherapy.
Main Methods:
- Prospective follow-up of 77 hypertensive patients on irbesartan monotherapy for 16.1±10.9 months.
- Assessment of cognitive function using the Mini-Mental State Examination (MMSE) and other tests.
- Measurement of peripheral and central blood pressure, arterial stiffness indices (pulse wave velocity, augmentation index), and 24-hour urine albumin excretion.
Main Results:
- Significant reductions in peripheral and central systolic and diastolic BP were observed.
- Significant improvements in arterial stiffness indices, including carotid-femoral pulse wave velocity and augmentation index.
- Significant improvement in MMSE scores and a reduction in 24-hour urine albumin excretion were noted.
Conclusions:
- Monotherapy with an angiotensin II receptor blocker (ARB), irbesartan, effectively reduces arterial stiffness and improves cognitive function in hypertensive patients.
- The study demonstrates significant reductions in BP and urinary albumin excretion.
- High adherence rates were observed, suggesting ARBs may be well-tolerated.
Objective:
Non-adherence to antihypertensive agents leads to reduced blood pressure (BP) control. Data supporting the correlation of adherence with arterial stiffness (AS) are few. Furthermore, the causal relationship between AS and cognitive dysfunction (CO/DY) has not been clearly established. It is suggested that angiotensin II receptor blockers (ARBs) exhibit the lowest discontinuation rate among antihypertensive drugs.
Design And Methods:
We followed up with patients receiving monotherapy with irbesartan. CO/DY was assessed with the Mini-Mental State Examination (MΜSE) and other tests.
Results:
Patients [n=77; mean age: 56±11 years; 39 men (50.6%)] were followed-up for 16.1±10.9 months. At the end of follow up, significant reductions were observed in mean peripheral systolic BP (135±117 vs 153±11 mmHg; p<0.005), mean peripheral diastolic BP (85±11 vs 95±10 mmHg; p<0.005), mean central systolic BP (130±11 vs 142±12 mmHg; p<0.005) as well as in mean central diastolic BP (85±8 vs 95±97 mmHg; p<0.005). AS indices [carotid-femoral pulse wave velocity and augmentation index] also improved significantly: 7.7±1.4 vs 8.2±1.4 m/sec (p<0.005), and 29.1±8.3 vs 32.3±9.1 (p<0.005), respectively. At the end of the study, a significant improvement was observed in the MMSE test (29.7±0.7 vs. 29.2±0.9; p<0.02), as well as a significant reduction in 24h urine albumin (94±82 vs. 204±112 mg/24h, p<0.005). The level of adherence was high in 60/77 (77.9%), medium in 9/77 (11.6%) and low in 8/77 (10.38%) patients.
Conclusion:
Hypertensive patients receiving mono-therapy with an ARB showed reduced AS, cognitive improvement, significant reductions in BP (peripheral and central) and decreased 24h urinary albumin excretion.
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