Asunto(s)

Asunto(s)

RESUMEN

The GERS-P (Exercise Rehabilitation Sports Prevention Group of the French Society of Cardiology) has decided to update current guidelines regarding the practice of EKG stress tests. Since the last update dates from 1997, the GERS judged it necessary to integrate data from new works and advancements made in the last 20 years. Good clinical practices and safety conditions are better defined regarding the structure, location, material, staff competency, as well as convention with hospital structures. The diagnosis of coronary artery disease remains the principal indication for a stress test. Interpretation of the results is crucial - it must be multivariate and provide either a low, intermediate or strong probability of the existence of coronary lesions, taking into account the studied population (risk factors, age, sex and symptoms). We no longer have to talk about a "positive, negative or litigious" test. Several new indications for a stress test have been defined for the assessment of cardiac pathologies. With such indications, the use of gas expiration measurements is highly recommended in order to provide a precise prognosis for all the various cardiac pathologies : congenital, ischemic, valvular, cardiomyopathy, congestive heart failure, rhythm and conduction disorders, pacemaker fine-tuning, or pulmonary hypertension. Indications for stress tests and contraindications are defined according to different population subgroups, for instance : athletes, women, children, the elderly, asymptomatic patients, diabetics, hypertensive patients, peripheral arteritis disease patients, or in the context of a non-cardiac surgery pre-op visit. The new guidelines are considerably different from those dating from 1997 and further pinpoint the relevance and importance of an EKG stress test within the arsenal of complementary cardiologic exams. With the improvements made in providing diagnostic value in CAD, as well as better prognostic value for any underlying pathology, the indication for an EKG stress test has extended to all cardiovascular disease.

Asunto(s)

RESUMEN

The exercise test is performed routinely in cardiology; its main indication is the diagnosis of myocardial ischemia, evaluated along with the subject's pretest probability and cardiovascular risk level. Other criteria, such as analysis of repolarization, must be taken into consideration during the interpretation of an exercise test, to improve its predictive value. An exercise test is also indicated for many other cardiac diseases (e.g. rhythm and conduction disorders, severe asymptomatic aortic stenosis, hypertrophic cardiomyopathy, peripheral artery disease, hypertension). Moreover, an exercise test may be indicated for specific populations (women, the elderly, patients with diabetes mellitus, patients in a preoperative context, asymptomatic patients and patients with congenital heart defects). Some cardiac diseases (such as chronic heart failure or arterial pulmonary hypertension) require a cardiopulmonary exercise test. Finally, an exercise test or a cardiopulmonary exercise test is indicated to prescribe a cardiac rehabilitation programme, adapted to the patient.

Asunto(s)

RESUMEN

The exercise test is still a key examination in cardiology, used for the diagnosis of myocardial ischemia, as well as for the clinical evaluation of other heart diseases. The cardiopulmonary exercise test can further define functional capacity and prognosis for any given cardiac pathology. These new guidelines focus on methods, interpretation and indications for an exercise test or cardiopulmonary exercise test, as summarized below. The safety rules associated with the exercise test must be strictly observed. Interpretation of exercise tests and cardiopulmonary exercise tests must be multivariable. Functional capacity is a strong predictor of all-cause mortality and cardiovascular events. Chest pain, ST-segment changes and an abnormal ST/heart rate index constitute the first findings in favor of myocardial ischemia, mostly related to significant coronary artery disease. Chronotropic incompetence, abnormal heart rate recovery, QRS changes (such as enlargement or axial deviations) and the use of scores (based on the presence of various risk factors) must also be considered in exercise test interpretation for a coronary artery disease diagnosis. Arrhythmias or conduction disorders arising during the exercise test must be considered in the assessment of prognosis, in addition to a decrease or low increase in blood pressure during the exercise phase. When performing a cardiopulmonary exercise test, peak oxygen uptake and the volume of expired gas/carbon dioxide output slope are the two main variables used to evaluate prognosis.

Asunto(s)

RESUMEN

The GERS (Exercise Rehabilitation and Sports Group of the French Society of Cardiology) has decided to update current guidelines regarding the practice of EKG stress tests. Since the last update dates from 1997, the GERS judged it necessary to integrate data from new works and advancements made in the last 20 years. Good clinical practices and safety conditions are better defined regarding the structure, location, material, staff competency, as well as convention with hospital structures. The diagnosis of coronary artery disease remains the principal indication for a stress test. Interpretation of the results is crucial-it must be multivariate and provide either a low, intermediate or strong probability of the existence of coronary lesions, taking into account the studied population (risk factors, age, sex and symptoms). Several new indications for a stress test have been defined for the assessment of cardiac pathologies. With such indications, the use of gas expiration measurements is highly recommended in order to provide a precise prognosis for all the various cardiac pathologies : congenital, ischemic, valvular, cardiomyopathies, congestive heart failure, rhythm and conduction disorders, pacemaker fine-tuning, or pulmonary hypertension. Indications for stress tests and contraindications are defined according to different population subgroups, for instance : athletes, women, children, the elderly, asymptomatic patients, diabetics, hypertensive patients, PAD patients, or in the context of a non-cardiac surgery pre-op visit. The new guidelines (due for publication soon) are considerably different from those dating from 1997 and further pinpoint the relevance and importance of an EKG stress test within the arsenal of complementary cardiologic exams. With the improvements made in providing diagnostic value in CAD, as well as better prognostic value for any underlying pathology, the indication for an EKG stress test has extended to all cardiovascular disease.

Asunto(s)

Asunto(s)

RESUMEN

BACKGROUND: Intensive sport may induce cardiac modifications. No recent study has been performed in elite tennis players. The aim of this cross-sectional study was to analyze the cardiac characteristics in a population of professional tennis players. METHODS: During the 2004 French Open Tennis Tournament, we offered complete echocardiographic screening to all professional tennis players. The study population consisted of 160 subjects: 80 tennis players (50 men and 30 women) and age- and sex-matched control groups (n = 80). RESULTS: Indexed left ventricular mass was significantly higher in tennis players (P < .0001). Left ventricular hypertrophy was present in 18 male (36%) and 6 female (20%) tennis players versus 2 men (4%) and no woman in the control groups (P < .0001 and P = .02, respectively). All indexed right and left atrial measurements were significantly higher in tennis players (P < .003). The incidence of left and right atrial dilation was significantly higher in tennis players (P < or = .0001). Indexed right atrial area and left atrial volume were significantly higher in baseline players as compared with offensive players and to control groups (P < .0001), whereas there was no significant difference in left ventricular mass according to the style of play (P > .75). No significant between-group difference was observed in Doppler data. CONCLUSIONS: In the present study, professional tennis players presented significant cardiac differences, as compared to a control group, with moderate left ventricular hypertrophy, bilateral atrial dilation, and normal systolic and diastolic functions. Atrial dilation is related to the style of play (baseline or offensive) and should be considered as physiological in tennis players.

Asunto(s)