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Screening for cardiac disease in potential recruits to the British Army
Andrew T Cox1, M Cameron-Smith2, F Folkes3
1RCDM (Birmingham), Queen Elizabeth Hospital, Birmingham, UK St George's University of London, London, UK.
Insights
The British Army screens recruits for cardiovascular disease using ECG and echocardiography. This updated system aims to improve early detection and management of heart conditions in service members.
Area of Science:
- Military Medicine
- Cardiovascular Health
- Public Health Screening
Background:
- Cardiovascular disease (CVD) poses a risk to military personnel due to high physical demands and remote operational environments.
- Annual fatalities from CVD underscore the need for effective screening in the British Army.
- Pre-employment medical assessments are crucial for identifying potential health issues in recruits.
Purpose of the Study:
- To evaluate the British Army's current cardiovascular disease screening system for recruits.
- To understand the aims, design, and evaluation methodologies of screening systems.
- To review the evolution of cardiac screening within the British Army.
Main Methods:
- The study defines key efficacy metrics for screening tests: sensitivity, specificity, and likelihood ratios.
- It describes potential pitfalls in evaluating screening systems.
- The article illustrates various cardiac screening tests, detailing their strengths and weaknesses.
Main Results:
- The article contrasts the previous British Army cardiac screening (history and physical exam) with the current system.
- The new system incorporates 12-lead ECG and on-site echocardiography for individuals with abnormal findings.
- Evaluation metrics like sensitivity and specificity are essential for quantifying screening test performance.
Conclusions:
- Effective screening for cardiovascular disease is vital for British Army recruits due to operational demands.
- The updated screening protocol, including ECG and echocardiography, represents an advancement over previous methods.
- Rigorous evaluation using established metrics is necessary to ensure the efficacy of military health screening programs.
Abstract:
The British Army screens potential recruits for disease, including cardiovascular disease, at the pre-employment medical assessment in the Army Selection Centres. The epidemiology of cardiovascular disease in the Armed Forces coupled with the high physical demand placed on the cardiovascular system, often in remote locations make screening desirable. This is particularly pertinent as servicemen and women die from cardiovascular disease each year. To evaluate this particular screening system it is essential to understand the aim of the system, how it is designed and how screening systems in general are evaluated. The efficacy of a screening test is quantified using the measurements of sensitivity, specificity and likelihood ratios. These measurements are defined and the pitfalls associated with evaluating a screening system are described. The different screening tests used to identify cardiac disease and their individual strengths and weaknesses, are illustrated. Finally the article reviews the previous British Army recruit cardiac screening system, that used a stereotyped history and physical examination and the newer system that replaced it, which includes the incorporation of the 12-lead ECG and on site echocardiography in individuals revealing abnormalities on history, examination or ECG.
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