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Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension
Published on: June 6, 2025
Clinical outcome of hypertension management
Vivian Wy Lee1, Tony Hw Chan, Tina Tl Ko
1School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong. vivianlee@cuhk.edu.hk
Insights
Uncontrolled hypertension in Hong Kong Chinese patients significantly increases cardiovascular events (CVEs) and medication use. Poorly managed blood pressure also leads to higher hospitalization costs, highlighting the need for better hypertension control.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- Hypertension management is crucial for preventing cardiovascular events (CVEs).
- Understanding medication use patterns in hypertensive patients is essential for optimizing treatment.
- The economic burden of inadequately controlled hypertension requires investigation.
Purpose of the Study:
- To examine the link between uncontrolled hypertension, medication patterns, and CVE incidence over five years.
- To estimate the hospitalization costs associated with inadequately controlled hypertension.
Main Methods:
- Retrospective observational study of 210 hypertensive patients from 2001-2005.
- Primary endpoints: blood pressure deviation from treatment goals (extent, duration, prevalence).
- Secondary endpoints: CVE incidence and hospitalization days for uncontrolled hypertension.
Main Results:
- Inadequately controlled systolic and diastolic blood pressure correlated with increased CVE incidence and polypharmacy (cardiovascular, non-cardiovascular, and total drug usage).
- Patients with persistently uncontrolled blood pressure showed a higher incidence of CVEs.
- Mean hospitalization cost due to CVEs was HK$42,584.0, representing 3.3% of total healthcare expenditure in 2005.
Conclusions:
- Inadequately controlled blood pressure is linked to a higher incidence of cardiovascular events and polypharmacy in Hong Kong Chinese hypertensive patients.
- Effective hypertension management is critical to reduce CVEs and associated healthcare costs.
Objective:
This study aimed to investigate the association between inadequately controlled hypertension, medication use pattern and the incidence of cardiovascular events (CVEs) over 5 years. The cost of hospitalisation associated with inadequately controlled hypertension was estimated.
Methods:
This was a retrospective observational study of patients who were diagnosed with hypertension with at least one blood pressure reading recorded at baseline (year 2000), reviewed from 2001-2005. Primary endpoints were the extent, duration and prevalence of blood pressure deviation from treatment goals. Secondary endpoints were incidence of CVEs and the number of days of hospitalisation associated with inadequately controlled hypertension.
Results:
In total, the medical records of 210 patients were reviewed. Statistically significant positive associations were found between inadequately controlled systolic blood pressure with the incidence of CVEs (p=0.018) and increased cardiovascular drugs (p<0.001), non-cardiovascular drugs (p=0.019) and total drug usage (p<0.001). Similar observations were observed between inadequately controlled diastolic blood pressure and increased cardiovascular (p<0.05) and total (p=0.007) drug usage. Patients with uncontrolled blood pressure at all times during the study period were associated with a higher incidence of CVEs (p=0.026). The mean cost of hospitalisation due to CVEs was estimated to be HK$42,584.0 +/- 36,670.0 (US$1 = HK$7.8) and it accounted for 3.3% of the total healthcare expenditure during 2005.
Conclusion:
Inadequately controlled blood pressure is positively associated with an increased incidence of CVEs and polypharmacy in Hong Kong Chinese hypertensive patients.
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