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Target home morning SBP be below 125 mmHg in type 2 diabetes patients
Kazuo Eguchi1, Satoshi Hoshide, Kazuomi Kario
1Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
Insights
For patients with type 2 diabetes, a home morning systolic blood pressure (SBP) of 125 mmHg is a key indicator for cardiovascular risk. This cutoff value helps predict adverse cardiovascular outcomes more accurately in this population.
Area of Science:
- Cardiology
- Endocrinology
- Public Health
Background:
- Self-monitoring of home blood pressure (BP) in type 2 diabetes patients is not well-established for cardiovascular risk stratification.
- Previous studies have not clearly defined optimal home BP monitoring thresholds for this population.
Purpose of the Study:
- To test the hypothesis that a home morning systolic blood pressure (SBP) cutoff of 125 mmHg is appropriate for stratifying cardiovascular risk in patients with type 2 diabetes.
- To compare the predictive value of home morning SBP cutoffs of 135 mmHg and 125 mmHg for cardiovascular events.
Main Methods:
- A cohort of 4308 individuals (1057 with type 2 diabetes, 3251 without) underwent clinic and home BP monitoring.
- Multivariable Cox regression analyses were used to assess incident cardiovascular events (stroke, myocardial infarction, sudden death, acute aortic dissection), adjusting for multiple risk factors.
- Kaplan-Meier analysis and log-rank tests were employed to evaluate the association between home morning SBP levels and cardiovascular events.
Main Results:
- Home morning SBP of at least 135 mmHg was significantly associated with cardiovascular events in both diabetes and non-diabetes groups.
- Home morning SBP of at least 125 mmHg was significantly associated with cardiovascular events in the type 2 diabetes group (P=0.012) but not in the non-diabetes group.
- In multivariable analysis, home morning SBP ≥ 125 mmHg independently predicted cardiovascular events in type 2 diabetes patients (HR 4.35, P=0.045).
Conclusions:
- The 125 mmHg cutoff for home morning systolic blood pressure is appropriate for predicting combined cardiovascular outcomes in patients with type 2 diabetes.
- This finding aids in refining cardiovascular risk assessment and management strategies for individuals with type 2 diabetes.
Background:
It is not established to what extent self-monitoring of home BP be lowered in patients with type 2 diabetes. We tested the hypothesis that the appropriate home morning SBP cutoff value is 125 mmHg in our stratification of cardiovascular risk in type 2 diabetes.
Method:
Clinic and home BP monitoring were performed in 4308 individuals (1057 people with diabetes and 3251, nondiabetes), and we tested two cutoff values of home morning SBP (MSBP): 135 and 125 mmHg. Multivariable Cox regression analyses adjusting for age, sex, body mass index, history of cardiovascular events, presence of chronic kidney disease, and atrial fibrillation were used for incident cardiovascular events. Main outcomes included stroke, myocardial infarction, sudden death, and acute aortic dissection.
Results:
A Kaplan-Meyer analysis revealed that MSBP at least 135 mmHg was significantly associated with cardiovascular events in both diabetes and nondiabetes groups (log-rank test, both P < 0.01), whereas MSBP at least 125 mmHg was significantly associated with cardiovascular events in the diabetes group (P = 0.012) but not nondiabetes group. In a multivariable analysis, home MSBP at least 135 mmHg was significantly associated with cardiovascular events in the diabetes group [hazard ratio 2.45, 95% confidence interval (CI) 1.17-5.14, P = 0.017) and nondiabetes group (hazard ratio 1.79, 95% CI 1.08-2.97, P = 0.024). Home MSBP at least 125 mmHg was an independent predictor of cardiovascular events in the diabetes group (hazard ratio 4.35, 95% CI 1.04-18.25, P = 0.045) but not in the nondiabetes group.
Conclusion:
In patients with type 2 diabetes, the 125-mmHg cutoff value for home MSBP would be the appropriate cutoff value in predicting combined cardiovascular outcomes.
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