Noncardiac causes of angina-like chest pain

Cardiovascular disorders in the college student

This article provides an overview of diagnosis and treatment of college students with possible congenital or acquired heart problem issues. Preventive cardiac concerns and issues regarding risk factors for atherosclerotic heart disease are discussed. College students with corrected or palliated heart conditions are included because they are an expanding segment of the adult cardiac population. Selected major syndromes with associated cardiac anomalies and complications are included. Finally, reinforcement and review of cardiac diagnosis or management issues occurring in college students (six case scenarios) are included in the appendix.

Breathing retraining: a three-year follow-up study of treatment for hyperventilation syndrome and associated functional cardiac symptoms

This study was designed to evaluate the long-term effects of paced diaphragmatic breathing on subjects who reported functional cardiac symptoms and who also demonstrated associated signs of hyperventilation syndrome. Subjects were a representative sample composed of 10 out of the original 41 subjects who had participated three years previously in a study designed to evaluate the short-term effects of breathing retraining on functional cardiac symptoms and respiratory parameters (respiratory rate and end-tidal carbon dioxide). The results of this follow-up study indicate that breathing retraining had lasting effects on both respiratory parameters measured. Subjects evidenced significantly higher end-tidal carbon dioxide levels and lower respiratory rates when compared to pretreatment levels measured three years earlier. Subjects also continued to report a decrease in the frequency of functional cardiac symptoms when compared to pretreatment levels. We conclude that breathing retraining has lasting effects on respiratory physiology and is highly correlated with a reduction in reported functional cardiac symptoms.

Spontaneous swallowing rate and emotional state. Possible mechanism for stress-related gastrointestinal disorders

Excessive spontaneous swallowing has been associated with a variety of common gastrointestinal symptoms including abdominal pain, heartburn, and bloating and may contribute to disorders such as hiatus hernia, duodenal ulcer, and irritable bowel syndrome. The present study investigated the hypothesis that changes in emotional state alter spontaneous swallowing rate. Subjects were 38 generally healthy undergraduates assigned to either a pleasant low arousal, neutral, or aversive high arousal condition. Each experimental session was divided into 30-min baseline and arousal manipulation periods. Spontaneous swallowing rate increased significantly with emotional arousal: for low, neutral, and high arousal groups, means were 7.9 +/- 1.9 (SE), 15.8 +/- 2.4, and 23.7 +/- 3.6 swallows/30 min, respectively. Other physiological and self-report measures, used to check the effectiveness of the arousal manipulation, varied appropriately with experimental procedures. These results indicate that changes in emotional state alter spontaneous swallowing rate in generally healthy individuals. Further research with patients is needed to establish whether stress-induced increases in swallowing rate produce or exacerbate clinically significant gastrointestinal symptomatology.

Audit of patients with chest pain presenting to an accident and emergency department over a 6-month period

The results of a 6-month retrospective audit of patients presenting with chest pain to an accident and emergency (A&E) department to which 46,000 new patients per year present are discussed. The computer diagnostic code assigned to the patients by the A&E doctor, referral rates for second opinion and disposal after assessment in the A&E department are examined, with particular reference to patients who may have had serious cardiac pathology, such as acute myocardial infarction (AMI) or unstable angina. Audit showed that overall 61% of patients with chest pain of all causes were assessed and discharged home by A&E doctors without recourse to second opinion. Of patients thought by the A&E doctors to have chest pain of cardiac origin, who were referred to the duty medical registrar or cardiologist, 88% were admitted. As a result of these findings a policy of more open referral for second opinion was instituted to reduce the likelihood of discharging patients home with serious cardiac pathology. In addition, the clinical problems of AMI and unstable angina are emphasized to all senior house officers early in their educational programme after joining A&E. Published literature on the diagnosis and misdiagnosis of AMI and unstable angina in the A&E department is reviewed. These studies are almost exclusively from North America, and a need for similar work in the U.K. is discussed.

Chest pain and breathlessness: relationship to psychiatric illness

Chest pain and breathlessness are common somatic symptoms of emotional disorder in ambulatory care. Chronic chest pain has a prevalence of 12% and is associated with high utilization of health care. Of patients with chest pain and breathlessness who are referred to a cardiac clinic but subsequently shown not to have heart disease, the majority continue to report symptoms. Those patients with the worst outcome, in terms of continuing limitation of activity and use of medical resources, are those with chest pain but normal coronary arteries. A number of studies that fail to support a unitary theory of causation of noncardiac chest pain are described. A multifactorial, interactive model is proposed, with contributions from physical factors, such as palpitations and intercostal muscle pain; psychologic factors, which include enhanced awareness of and selective attention to bodily sensation; and environmental factors, such as previous exposure to cardiorespiratory disease in first-degree relatives or significant others. Although there have been few controlled intervention studies in patients with unexplained cardiorespiratory symptoms, there is evidence for the efficacy of both drug treatments and psychologic treatment. The results of intervention studies in patients with chest pain and normal coronary arteries are eagerly awaited. Atypical chest pain and breathlessness are common causes of office consultations and/or functional disability. The diagnoses should be established on the basis of positive evidence of psychiatric illness rather than by exclusion. The etiology is multifactorial, and management is aimed at treating the underlying psychosocial problems and/or psychiatric illness. Cognitive-behavioral treatments are probably as effective as drug treatments in the short-term, and the care of these patients would be improved by a more detailed explanation of noncardiac causes and a greater opportunity for patients to discuss their fears.

Psychological treatment for atypical non-cardiac chest pain: a controlled evaluation

Thirty-one patients with atypical non-cardiac chest pain which had persisted despite negative medical investigation were treated in a controlled trial of cognitive-behavioural therapy. The average duration of pain was 4.7 years. Patients were randomized to either immediate treatment or as a control to assessment only. Treatment involved teaching patients how to anticipate and control symptoms, and modification of inappropriate health beliefs. The average number of sessions given was 7.2. There were significant reductions in chest pain. limitations and disruption of daily life, autonomic symptoms, distress and psychological morbidity in the treated group as compared with the control group who were unchanged. The assessment-only group were treated subsequently and showed comparable changes. Improvements were fully maintained by both treated groups at four- to six-months follow-up.

Syndrome of diminished vasodilator reserve of the coronary microcirculation (microvascular angina or syndrome X): diagnosis by combined atrial pacing and thallium 201 imaging--a case report

Patients with angina-like chest pain without evidence of epicardial coronary artery disease or coronary arterial vasospasm are becoming increasingly recognized. These are often related to noncardiac causes including esophageal, musculoskeletal, and hyperventilatory or panic states. However, recently a subgroup of such patients are being recognized as having true myocardial ischemia and chest pain on the basis of diminished coronary microvascular vasodilatory reserve (microvascular ischemia or Syndrome X). The authors describe such a patient who was found to have replication of anginal pain associated with a reversible ischemic defect on thallium 201 imaging during atrial pacing, suggesting ischemia in this myocardial segment. Resolution of angina and ST segment electrocardiographic changes of ischemia occurred with cessation of pacing. We believe this is the first report of a patient with this form of myocardial ischemia diagnosed by this method and should be considered in patients with anginal chest pain after significant coronary artery disease and coronary vasospasm have been excluded.