Chest pain: relationship of psychiatric illness to coronary arteriographic results

Validating studies for panic disorder in patients with angiographically normal coronary arteries

This article describes validating studies for diagnosing panic disorder in some patients with angiographically normal coronary arteries (NCA) and chest pain. Psychiatric interviews of 94 such patients showed that 34% met the diagnostic criteria for panic disorder. Further studies showed that NCA patients with panic disorder were more disabled at 3.5-year follow-up, had more relatives with panic disorder, were more likely to suffer from major depression, and were more likely to respond to 35% CO2 challenge with panic symptoms. Because panic disorder is highly disabling but responds well to psychological and pharmacologic treatments, screening NCA patients in the cardiology population for this disorder is recommended.

Psychiatric aspects of chest pain in the emergency department

We estimate that a third of the patients who present to the ED with chest pain have a current psychiatric disorder and that psychiatric disorders among chest pain patients are associated with a high rate of ED utilization for chest pain evaluations. Physicians in the ED recognize only a small fraction of the psychiatric disorders, so appropriate treatment or referral may be infrequent. The proportion of chest pain patients with CAD who also have a psychiatric disorder may be in the range of 20% to 30%, justifying careful assessment of psychiatric disorders in CAD patients. We conclude that the psychiatric aspects of chest pain are sufficiently prevalent, clinically significant, and a contributor to unnecessarily high utilization of medical services. We call for clinical research to address these questions by outlining three areas of study that will advance our knowledge and care of the patient with chest pain.

The relationship between esophageal motility disorders and microvascular angina

Patients with unexplained chest pain have caused investigators in cardiology, gastroenterology, and psychiatry to find abnormalities with overlap among the three specialties. This article reviews the data concerning the potential interrelation of chest pain of cardiac or esophageal origin.

Psychiatric illness in patients with chronic fatigue and those with rheumatoid arthritis

OBJECTIVES

To identify psychiatric differences between patients with chronic fatigue and those with rheumatoid arthritis and to investigate whether patients meeting Centers for Disease Control (CDC) criteria for chronic fatigue syndrome (CFS) can be differentiated from patients with chronic fatigue on measures of disability and psychosocial distress.

DESIGN

Cross-sectional study comparing 98 patients with chronic fatigue with 31 patients with rheumatoid arthritis on structured psychiatric interviews and patient questionnaires. Nineteen patients meeting CDC criteria for CFS were compared with 79 patients with chronic fatigue not meeting CDC criteria on questionnaires measuring disability and psychosocial distress.

SETTING

Consecutive patients with chronic fatigue were selected from a chronic fatigue clinic at the University of Washington, and 31 consecutive patients with rheumatoid arthritis were sampled from a private rheumatology practice.

MAIN RESULTS

Patients with chronic fatigue had a significantly higher prevalence of lifetime major depression and somatization disorder than did patients with rheumatoid arthritis. Patients with chronic fatigue also had a significantly higher prevalence of current and lifetime psychiatric diagnoses. Only 19 of 98 patients with chronic fatigue met CDC criteria for CFS. Patients meeting CDC criteria for CFS could not be differentiated from the larger group of patients with chronic fatigue on any study variable.

CONCLUSIONS

Patients with chronic fatigue have a significantly higher burden of psychiatric illness than do patients with rheumatoid arthritis. The psychiatric illness preceded the development of chronic fatigue in over half the patients. Centers for Disease Control criteria for CFS did not select a subset of chronic fatigue patients who could be differentiated on disability or psychosocial parameters from patients with chronic fatigue who did not meet CDC criteria.

Investigation and management of non-cardiac chest pain

Recurring substernal chest pain is an important clinical problem, causing anxiety for patients and their physicians because of the fear of possible cardiac disease. The differential diagnosis includes coronary artery disease, oesophageal disorders such as acid reflux disease and motility disturbances, musculoskeletal problems, psychological disorders including panic attacks, and a new 'fly in the ointment'--microvascular angina. History alone usually cannot distinguish cardiac from non-cardiac chest pain. After exclusion of significant coronary artery disease, attention must be turned to oesophageal disorders, which may be seen in as many as 50% of these patients. Oesophageal motility disorders, particularly the nutcracker oesophagus, are common, but the relationship between pain and abnormal contraction pressures is not well established. Provocative tests such as edrophonium (Tensilon) and balloon distension help to identify the oesophagus as the source of chest pain but do not direct therapy. Recent studies with ambulatory oesophageal monitoring suggest that gastro-oesophageal reflux may be a more common cause of chest pain than motility disorders. This is an important finding as acid reflux is a treatable problem, while therapies for motility disorders may only worsen reflux disease. The recent observation that oesophageal disorders are frequently associated and interact with psychological disorders such as anxiety, depression, somatization and panic attacks complicates the evaluation and understanding of chest pain. How these various abnormalities may be linked is an unresolved issue. Increased central nervous system stimulation and altered visceral and/or central pain sensitivity could be the common factors. It is hoped that further research into these areas will lead to new understandings of and possible solutions to the complex problem of non-cardiac chest pain.

Axis I disorders in ER patients with atypical chest pain

To examine the contribution of psychopathology to emergency room (ER) visits for atypical chest pain, we administered two screening measures and the Structured Clinical Interview for DSM III-R (SCID) to thirty-five subjects within seventy-two hours of their ER visit. Follow-up SCID interviews were completed in thirty subjects at five to twelve months. Sixty percent of the sample had an initial Axis I diagnosis, predominately affective (34%) and anxiety (46%) disorders. Forty percent had multiple diagnoses initially. The most common diagnoses were panic disorder (31%) and major depression (23%). At follow-up 47 percent had Axis I diagnoses, 30 percent had multiple diagnoses, with only slightly decreases rates for panic disorder (27%) and major depression (17%). Many subjects had lost, gained, or switched diagnoses by follow-up, in spite of one consistent rater and a few subjects seeking treatment. ER physicians often do not recognize these psychiatric disorders in chest pain patients. The high risk of suicide in panic disorder and depression, and the high cost of disability in recurrent chest pain make it essential that ER physicians include these disorders in the differential of atypical chest pain.

Mitral valve prolapse and neuroticism in chest pain patients with normal and diseased coronary arteries

Patients with chest pain and normal coronary arteries (NCA) score higher on measures of neuroticism than patients with coronary artery disease (CAD). This relationship, coupled with findings linking mitral valve prolapse (MVP) and anxiety disorders, led us to examine prospectively the possibility that a greater incidence of MVP among NCA patients accounts for their elevated neuroticism scores. One-hundred-forty-four patients completed psychological tests and a structured interview prior to cardiac catheterization. Forty-one of the 144 patients (28%) had normal coronary arteries. Within the NCA group 29 percent had MVP; within the CAD group only 13 percent had MVP. Despite the significant difference between NCA and CAD groups on measures of neuroticism, there were no differences as a function of MVP status, nor was there an interaction of MVP and coronary arterial status. These findings support the case for an association between NCA and neuroticism independent of the presence or absence of MVP.

Major depression, panic disorder, and mitral valve prolapse in patients who complain of chest pain

PURPOSE

Patients with chest pain but without angiographic evidence of significant atherosclerotic coronary artery disease (CAD) are often found to have other medical or psychiatric disorders, including mitral valve prolapse, panic disorder (PD), and major depressive disorder (MDD). The purpose of this study was to determine the degree of comorbidity between MDD/PD and mitral valve prolapse in a group of patients with non-CAD chest pain.

PATIENTS AND METHODS

Patients referred for cardiac catheterization and coronary angiography for suspected CAD who were 70 years of age or younger and without other significant medical illnesses or cardiac complications were eligible for study. The first 100 patients who agreed to a psychiatric diagnostic interview were recruited.

RESULTS

Forty-eight of the 100 patients were found to be without significant CAD. Forty-two percent of these patients, compared to 19% of the patients with significant CAD, were found to have either MDD, PD, or both. Eighty percent of the patients without CAD who had mitral valve prolapse also had either MDD or PD (p less than 0.006).

CONCLUSIONS

The finding that mitral valve prolapse was significantly associated with MDD/PD has implications for the diagnosis and treatment of patients with non-CAD chest pain, and may explain why these patients complain of symptoms.

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.

Atypical anxiety disorder: a descriptive study

This retrospective study examined 75 outpatients who received an atypical anxiety disorder diagnosis in a 30-month period. Patients who were later rediagnosed tended to have multiple anxiety diagnoses. "Atypical," in this sense, meant that insufficient information was available to arrive at specific anxiety diagnoses. A subgroup that continued to be diagnosed as atypical throughout their treatment tended to have multiple subsyndromal complaints, unusual symptoms, or both. This subgroup raises questions regarding the cutoff criteria for the anxiety disorders in DSM-III and DSM-III-R and suggests a possible new diagnostic subtype for future investigation.

Chest pain

The accurate diagnosis of chest pain is often difficult. We review the differential diagnosis of chest pain and the diagnostic studies used in the evaluation of chest pain syndromes. Myocardial ischemia, aortic dissection, pulmonary embolism, pericarditis, and gastroenterologic sources of chest pain are the most common. The chest X-ray, electrocardiogram, echocardiogram, heart catheterization studies, and esophageal studies are helpful diagnostically.

Panic disorder in patients with chest pain and angiographically normal coronary arteries

Although patients with angiographically normal or near normal coronary arteries are at low risk for cardiac disease, several follow-up studies have shown that many continue to report recurrent chest pain associated with social and work dysfunction. Three diagnostic entities have been proposed to explain the morbidity of this group: microvascular angina, esophageal motility disorders and panic disorder. The purpose of this study was to test the hypothesis that panic disorder is found frequently in patients with chest pain who have normal epicardial vessels. Ninety-four subjects with angiographically normal coronary arteries were interviewed according to a structured psychiatric protocol within 24 hours of their catheterizations. Thirty-two (34%) fit Diagnostic and Statistical Manual of Mental Disorders (third edition, revised) criteria for current panic disorder. Because panic disorder can be effectively treated, physicians should consider this diagnosis in this group of patients. Current research findings suggest that panic disorder, microvascular angina and esophageal disorders may each form the basis for chest pain in approximately 25% of these patients. Miscellaneous problems account for the other 25%.

Atypical angina in patients with coronary artery disease suggests panic disorder

The occurrence of psychiatric disorders in patients with "medical" problems is not only possible but may be even facilitated by these problems. This article examines the relationship between the type of chest pain and the diagnosis of panic disorder among coronary artery disease (CAD) patients. Forty-nine such cardiology patients were interviewed using a structured instrument. Forty percent of patients with atypical angina met DSM-III-R criteria for current panic disorder while no panic disorder was identified in the typical angina group. This finding should have great implications for the care of CAD patients. At least many of the atypical angina patients could benefit from standard effective treatment for panic disorder. This would likely improve their functioning and decrease the financial burden on them and the health care system.

Microvascular angina and panic disorder

Recent cardiac studies have suggested that patients with chest pain and angiographically normal coronaries have "microvascular angina" (MVA). In contrast, prior psychiatric studies have shown that some of these patients have panic disorder (PD). We compared the clinical and psychologic characteristics of fifteen patients with MVA and fifteen patients with panic disorder (PD), and examined response to lactate infusion in a subgroup of MVA patients. Although 40 percent of MVA patients met criteria for PD and had chest pain following lactate infusion, there were psychologic and symptomatic differences between the MVA and PD groups. These results reflect either co-morbidity of MVA and PD in some patients or two types of MVA, one of primary cardiac origin and one a centrally mediated epiphenomenon of the increased autonomic arousal seen in PD.

Factors predictive of panic disorder in cardiology patients with chest pain and no evidence of coronary artery disease: a cross-validation

Recent data indicate that a substantial number of cardiology patients with chest pain and no clinical evidence of coronary artery disease suffer from panic disorder. Discriminant function analysis reveals that a self-report anxiety measure alone, or in conjunction with minimal demographic information, can predict whether such patients have panic disorder. Predictive accuracy ranges from 69 to 76% correct classification, significantly improving upon chance predictions alone. A 'split-half' design was used in order to cross-validate predictive equations, and the total sample was also analyzed so as to provide the most stable equation. Clinical and future research implications of these findings are discussed.

Screening emergency room patients with atypical chest pain for depression and panic disorder

In response to recent reports relating atypical chest pain to normal coronary arteries and to various types of psychopathology, we developed a pilot study to investigate 1) the prevalence of depression and panic disorder among patients presenting to an emergency room with atypical chest pain, and 2) what the likelihood is of an emergency room physician recognizing the psychosocial factor. Of forty-nine subjects screened, 39 percent scored positively for depressive syndrome on the Center for Epidemiological Studies-Depression rating scale, 43 percent met criteria for panic attack and 16 percent met criteria for panic disorder by DSM-III. Although thirty subjects (61%) screened positively for depression or panic attack, only one received a psychiatric diagnosis of any kind. This pilot study suggests: 1) that the relationship between chest pain and psychopathology in emergency room patients deserves further rigorous study; 2) that depression and panic attacks in association with atypical chest pain may be underdiagnosed by the emergency room physician; and 3) that self-report screening measures as an aid to diagnosis in this population need to be more closely investigated.