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Impact of COVID-19 Infection on Blood Pressure Variability and Cardiovascular Outcomes in Hypertensive Patients After
Quanbin Su1, Mingming Wang1, Jing Yu1
1Department of Cardiology, Lanzhou University Second Hospital, Lanzhou, China.
Insights
COVID-19 infection significantly impacts blood pressure variability (BPV) in hypertensive patients, leading to abnormal hemodynamic patterns and increased cardiovascular risk. Personalized hypertension management is crucial post-infection.
Area of Science:
- Cardiovascular Medicine
- Infectious Diseases
- Hypertension Research
Background:
- Hypertension management is critical for cardiovascular health.
- COVID-19's long-term effects on cardiovascular parameters require further investigation.
- Blood pressure variability (BPV) is an emerging risk factor for cardiovascular events.
Purpose of the Study:
- To evaluate the impact of COVID-19 infection on blood pressure variability (BPV) and cardiovascular outcomes in hypertensive patients.
- To identify hemodynamic patterns associated with poor prognosis after COVID-19 infection.
- To elucidate the mechanisms linking COVID-19 infection to altered BPV and cardiovascular risk.
Main Methods:
- Retrospective cohort study of 318 hypertensive patients over 2 years.
- Utilized 24-hour ambulatory blood pressure monitoring (ABPM).
- Employed structural equation modeling (SEM) and Cox regression analysis.
Main Results:
- COVID-19 patients with poor prognosis exhibited elevated nocturnal systolic blood pressure (SBP) load, higher arterial relative volume (ARVDBP), wider pulse pressure, and reduced time in target BP range.
- Infection status, nocturnal BP load, and BPV were identified as major risk factors for adverse outcomes.
- SEM indicated that COVID-19 infection indirectly worsened prognosis via increased nighttime BP levels, load, and variability.
Conclusions:
- COVID-19 infection exacerbates BPV and cardiovascular risk in hypertensive individuals, primarily through mechanisms like endothelial dysfunction and autonomic dysregulation.
- Individualized hypertension management strategies are essential during and after infection.
- Recommendations include optimizing renin-angiotensin system blockade, considering nighttime dosing of antihypertensives, and continuous circadian BP monitoring.
Abstract:
This retrospective cohort study assessed the effect of COVID-19 infection on blood pressure variability (BPV) and cardiovascular outcomes in hypertensive patients using 24-h ambulatory blood pressure monitoring and structural equation modeling (SEM). Among 318 patients followed for 2 years, those with infection and poor prognosis showed the most abnormal hemodynamic patterns, including markedly elevated nocturnal SBP load (70.0% vs. 50.1%), higher ARVDBP (9.8% vs. 8.2%), wider pulse pressure (60.9 mmHg), and lower time in target range (30.9% vs. 74.7%, p < 0.001). Cox regression identified infection status, nocturnal BP load, and BP variability as major risk factors, while multivariate models confirmed 11 independent predictors. Neither diabetes nor antihypertensive medication class modified these associations. SEM demonstrated that infection influenced prognosis indirectly through elevated nighttime BP level, load, and variability (indirect effect β = 0.098, p < 0.001). Mechanistically, infection-driven endothelial dysfunction, microthrombotic activation, and autonomic dysregulation, rather than prolonged inactivity, likely underlie the nocturnal amplification of BP instability. These findings support the need for individualized hypertension management during and after infection, focusing on renin-angiotensin system balance, continuation of ACEI/ARB therapy, nighttime dosing of long-acting agents, and circadian BP monitoring to mitigate long-term cardiovascular risk.
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