Time-Dependent Risk for Recurrence in Survivors of Major Adverse Cardiovascular Events
Anderson Bermon1,2, Belem Trejo-Valdivia3, Carlos Federico Molina Castaño4,2
1Centro de Investigaciones, Fundación Cardiovascular de Colombia, Bucaramanga, COL.
Cureus
|May 31, 2024
Summary
Recurrent cardiovascular events are a growing concern. This study found severe depression and high LDL cholesterol levels significantly increase the risk of recurrence in patients with prior cardiovascular events.
Area of Science:
- Cardiology
- Epidemiology
- Clinical Research
Background:
- Increasing prevalence of occlusive cardiovascular events leads to higher risks of fatal recurrence.
- Identifying risk factors for recurrent cardiovascular events is crucial for patient management.
Purpose of the Study:
- To determine variables associated with the time to recurrent cardiovascular events.
- To analyze the association between changes in low-density lipoprotein cholesterol (LDL-C) levels and time-to-event.
Main Methods:
- Prospective observational cohort study of 727 adults with a history of occlusive cardiovascular events.
- Follow-up period of up to 33 months to assess major adverse cardiovascular events (MACE).
- Analysis using proportional hazard and time-dependent hazard models.
Main Results:
- The two-year recurrence rate for major adverse cardiovascular events (MACE) was 12.38%.
- Severe depression (Hazard Ratio: 8.25) and LDL-C ≥120 mg/dl (Hazard Ratio: 2.12) were significant predictors of recurrence.
- Sustained LDL-C >120 mg/dl over time increased recurrence risk (Hazard Ratio: 1.017).
Conclusions:
- Identified patient profiles at high risk for recurrent coronary events.
- Highlights the need for prompt, interdisciplinary treatment to prevent cardiovascular event recurrence.
Related Concept Videos
Assumptions of Survival Analysis
122
Survival models analyze the time until one or more events occur, such as death in biological organisms or failure in mechanical systems. These models are widely used across fields like medicine, biology, engineering, and public health to study time-to-event phenomena. To ensure accurate results, survival analysis relies on key assumptions and careful study design.
122
Introduction To Survival Analysis
219
Survival analysis is a statistical method used to study time-to-event data, where the "event" might represent outcomes like death, disease relapse, system failure, or recovery. A unique feature of survival data is censoring, which occurs when the event of interest has not been observed for some individuals during the study period. This requires specialized techniques to handle incomplete data effectively.
The primary goal of survival analysis is to estimate survival time—the time...
The primary goal of survival analysis is to estimate survival time—the time...
219
Hazard Rate
102
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
102
Comparing the Survival Analysis of Two or More Groups
177
Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
177
Exercise and Cardiovascular Response
784
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
784
Blood Studies for Cardiovascular System I: Cardiac Biomarkers
137
Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
137


