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Vascular calcification in the uremic patient: a cardiovascular risk?
Mercedes Salgueira1, Nuria del Toro, Rafael Moreno-Alba
1Nephrology and Cardiology Services, Virgen Macarena University Hospital, Sevilla, Spain. apalma@hvm.sas.junta-andalicina.es
Insights
Vascular calcification (VC) is common in hemodialysis (HD) patients and significantly increases the risk of cardiac events, heart failure, and death. Identifying VC aids in stratifying cardiovascular risk in this population.
Area of Science:
- Nephrology
- Cardiology
- Radiology
Background:
- Vascular calcification (VC) is increasingly recognized as a risk factor for adverse cardiac outcomes in patients with chronic kidney disease.
- Uremic patients undergoing hemodialysis (HD) are particularly susceptible to VC due to various metabolic and inflammatory factors.
- The association between VC and cardiac events in HD patients warrants further investigation to improve patient management.
Purpose of the Study:
- To investigate the prevalence of vascular calcification (VC) in hemodialysis (HD) patients.
- To determine the impact of VC on cardiac morbidity, including ischemic heart disease and congestive heart failure.
- To assess the relationship between VC and cardiovascular mortality in HD patients.
Main Methods:
- A cohort of 79 hemodialysis (HD) patients was studied, with VC assessed via radiologic series.
- Cardiovascular risk factors, echocardiographic parameters, and clinical outcomes (ischemic heart disease, heart failure, mortality) were evaluated over a two-year follow-up period.
- Statistical analyses were performed to correlate VC presence with cardiac events and mortality.
Main Results:
- Vascular calcification (VC) was present in 55.7% of the studied HD patients.
- VC was significantly associated with left ventricular hypertrophy, diastolic dysfunction, and cardiac valve calcification.
- Patients with VC exhibited a higher incidence of ischemic heart disease (71.4% vs. 28.6%) and heart failure (0.41 vs. 0.18 events/year), and all eight cardiac deaths occurred in patients with VC.
Conclusions:
- The presence of vascular calcification (VC) is a significant indicator of elevated cardiovascular risk in hemodialysis (HD) patients.
- VC is associated with adverse cardiac structural changes and clinical outcomes, including increased morbidity and mortality.
- Routine assessment for VC may aid in identifying HD patients who require closer cardiac monitoring and risk management strategies.
Background:
Several factors suggest that the presence of vascular calcification (VC) is associated with a high risk of cardiac events in uremic patients. The aim of this study was to analyze the influence of VC on cardiac morbidity and mortality in our hemodialysis (HD) patients.
Methods:
We studied 79 patients on HD: 43 males, mean age 48 +/- 15 years old, mean time on HD 83 +/- 63 months. The presence of VC was evaluated by radiologic series. Other cardiovascular risk factors analyzed were arterial hypertension, diabetes mellitus, obesity, cigarette smoking, anemia, and dyslipidemia. All patients underwent M-mode, two-dimensional, Doppler echocardiography. Patients were followed for two years. During this time, clinical information collected included predialysis blood pressure, incidence of ischemic heart disease, episodes of congestive heart failure, and mortality due to cardiovascular event.
Results:
VC was observed in 55.7% of patients. Left ventricular hypertrophy, diastolic dysfunction, and cardiac valve calcification were significantly associated with VC. Ischemic heart disease (71.4% vs. 28.6%) and episodes of cardiac failure (0.41 vs. 0.18 per year; P < 0.05) appeared more frequently in the patient group with VC. VC was present in 80.6% of patients who developed episodes of heart failure. Eight patients died from cardiac disease; each of them had VC.
Conclusion:
The presence of VC can help to identify those HD patients with a higher cardiovascular risk.