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Organisational factors in relation to control of blood pressure: an observational study
Melanie Inkster1, Alan Montgomery, Peter Donnan
1Tayside Centre for General Practice, University of Dundee.
Insights
Many patients with hypertension struggle to reach blood pressure targets. Increased hypertension-related consultations were linked to poorer blood pressure control, indicating a need for improved primary care strategies.
Area of Science:
- Cardiology
- Primary Care Medicine
- Public Health
Background:
- A significant majority of hypertension patients in general practice do not achieve target blood pressure levels (<150/90 mmHg).
- Suboptimal blood pressure control remains a persistent challenge in community-based hypertension management.
Purpose of the Study:
- To examine hypertension management factors, including sociodemographic variables, antihypertensive drug regimens, and organizational aspects within primary care settings.
- To identify key determinants influencing blood pressure control in a hypertensive patient cohort.
Main Methods:
- An observational study conducted over three years across eight general practices in Tayside, UK.
- Involved 560 randomly selected hypertensive patients aged 40-79 years, assessing blood pressure control against the British Hypertension Society standard (<150/90 mmHg).
Main Results:
- Nearly half (49%) of eligible patients had inadequate blood pressure control at study conclusion.
- No significant associations were found with sex, age, deprivation, or comorbidity.
- Increased hypertension-related consultations correlated with a higher likelihood of inadequate blood pressure control; drug treatment modifications did not significantly impact control.
Conclusions:
- Achieving adequate blood pressure control is a major ongoing health issue for a substantial hypertensive population.
- Effective hypertension care delivery in the community is influenced by patient, physician, and organizational factors.
Background:
Studies show that 60-75% of treated patients with hypertension in general practice, still do not reach the recommended blood pressure targets of <150/90 mmHg.
Aim:
To investigate aspects of hypertension management in relation to sociodemographic variables, antihypertensive drug treatment, and organisational factors in primary care.
Design Of Study:
Observational study over 3 years.
Setting:
Eight general practices in Tayside, UK.
Method:
Participants were 560 randomly selected patients aged 40-79 years receiving treatment for hypertension. The outcome measurement was blood pressure control, expressed in binary form based on the British Hypertension Society audit standard of <150/90 mmHg.
Results:
Of 536 eligible patients, 261 (49%) were defined as having inadequate blood pressure control at the end of the study period. No significant associations were discovered with sex, age, deprivation score and comorbidity. In those patients with inadequate control, 30% had no modifications to their drug treatment during the study period. Blood pressure control at the end of the study period was not associated with number of antihypertensive drugs taken or number of antihypertensive drug modifications. The mean number of clinician contacts was 11 (standard deviation = 8), and mean continuity in primary care was high, although this was not associated with improved blood pressure control. A higher proportion of hypertension-related consultations were associated with increased odds of having inadequate blood pressure control.
Conclusion:
Achieving adequate blood pressure control continues to represent a substantial health problem in a significant proportion of the hypertensive population. Patient, physician and organisational elements play a role in ensuring effective delivery of hypertension care in the community.
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