Predictive value of prodromal symptoms in myocardial infarction

Prodromal symptoms within four weeks prior to an acute event leading to coronary care unit admission have been studied in 276 consecutive patients interviewed within 24 hours after arrival at hospital. Coronary heart disease (CHD) was diagnosed in 237 patients, 140 of whom did develop acute myocardial infarction (AMI) (Group 1) and 97 who did not (Group 2). Of the remainder, 15 had miscellaneous heart diseases (Group 3) and 24 no heart disease (Group 4). Unstable angina pectoris was equally frequent among CHD patients with and without development of AMI and was related to a higher hospital mortality in AMI patients. Less specific symptoms occurred with equal frequency in the four groups. Patients who developed AMI were not possible to identify by prodromal symptoms.     

Prodromal symptoms in myocardial infarction

BACKGROUND: Little is known about the prodromal phase of myocardial infarction (MI). The aim of this study was to explore this phase with methodologies which have been standardized in affective disorders. The psychological evaluation of patients with MI diagnosis is currently based on DSM-IV criteria. An alternative diagnostic and conceptual framework has been proposed by an international group of psychosomatic investigators. In this study, we are going to compare these new criteria, i.e. the Diagnostic Criteria for Psychosomatic Research (DCPR), with DSM-IV in a population where a high prevalence of psychological problems is expected. METHODS: A semistructured research interview based on Paykel's Clinical Interview for Depression for eliciting prodromal symptoms was administered to a consecutive series of 92 patients with a first episode MI diagnosis. Two interviews for the evaluation of psychological problems were administered according to DSM-IV and DCPR criteria. RESULTS: Most of the patients reported prodromal symptoms. Irritability, depressed mood and somatic anxiety were the most common prodromal symptoms. The results also show that the number of DCPR diagnoses was higher than the number of DSM-IV diagnoses. At least one DCPR diagnosis was found in all patients, whereas at least one DSM-IV diagnosis was present in 42 (46%) patients. CONCLUSIONS: The prodromal phase of MI was found to be characterized by prodromal symptoms of affective type. The joint use of DSM-IV and DCPR criteria was found to improve the identification of psychological factors which could affect this phase. The results should alert the physician to the fact that patients presenting with irritability, depressed mood (including demoralization), anxiety and insomnia may be at risk of developing coronary artery disease.     

Cardiac history, prior depression and personality predict course of depressive symptoms after myocardial infarction

BACKGROUND: Although many studies have focused on post-myocardial infarction (MI) depression, there is limited information about the evolution and determinants of depressive symptoms in the first year post-MI. Therefore we examined (1) the course of depressive symptoms during the first year post-MI and (2) the predictors of these symptom trajectories. METHOD: To assess depressive symptoms, 287 patients completed the Beck Depression Inventory during hospitalization for MI, and 2, and 12 months post-MI. Personality was assessed with the Type-D scale during hospitalization. We used latent class analysis to examine the evolution of depressive symptoms over a 1-year period and multinomial logit regression analyses to examine predictors of these symptom trajectories. RESULTS: The course of depressive symptoms was stable during the first year post-MI. Four groups were identified and classified as non-depressed [40%, intercept (IC) 2.52], mildly depressed (42%, IC 6.91), moderately depressed (14%, IC 13.73) or severely depressed (4%, IC 24.54). In multivariate analysis, cardiac history (log OR(severe) 2.93, p=0.02; log OR(moderate) 1.81, p=0.02; log OR(mild) 1.46, p=0.01), history of depression (log OR(severe) 4.40, p<0.001; log OR(moderate) 1.97, p=0.03) and Type-D personality (log OR(severe) 4.22, p<0.001; log OR(moderate) = 4.17, p<0.001; log OR(mild) 1.66, p=0.02) were the most prominent risk factors for persistence of depressive symptoms during the first year post-MI. CONCLUSIONS: Symptoms of depression tend to persist during the first year post-MI. Cardiac history, prior depression and Type-D personality were identified as independent risk factors for persistence of depressive symptoms. The results of this study strongly argue for routine psychological screening during hospitalization for acute MI in order to identify patients who are at risk for chronicity of depressive symptoms and its deleterious effects on prognosis.     

Somatic items in the assessment of depressive symptoms in pediatric patients with diabetes

Depression inventories contain somatic items which may be related to disease rather than to depression in individuals with chronic illness. Adolescents with type 1 diabetes (n = 151) and medically well controls (n = 68) completed the Center for Epidemiological Studies-Depression Scale (CES-D) which includes somatic and cognitive/affective symptoms. Diabetes patients reported higher levels of all depressive symptoms than controls; the discrepancy was equivalent for somatic and cognitive/affective symptoms. For diabetes patients, somatic and cognitive/affective symptoms did not correlate with indices of disease control except for number of diabetes-related hospitalizations, where the correlations were equivalent. In participants with diabetes and in controls, somatic and cognitive/affective symptoms were strongly correlated with each other. These findings were not moderated by level of depressive symptoms. Our study suggests that the somatic items on the CES-D do not confound the measurement of depressive symptoms in young people with type 1 diabetes.     

Recognizing increased risk of depressive comorbidity after myocardial infarction: looking for 4 symptoms of anxiety-depression

BACKGROUND: Screening for depression in myocardial infarction (MI) patients must be improved: (1) depression often goes unrecognized and (2) anxiety has been largely overlooked as an essential feature of depression in these patients. We therefore examined the co-occurrence of anxiety and depression after MI, and the validity of a brief mixed anxiety-depression index as a simple way to identify post-MI patients at increased risk of comorbid depression. METHODS: One month after MI, 176 patients underwent a psychiatric interview and completed the Beck Depression Inventory (BDI) and the Symptoms of Anxiety-Depression index (SAD(4)) containing four symptoms of anxiety (tension, restlessness) and depression (feeling blue, hopelessness). RESULTS: Thirty-one MI patients (18%) had comorbid depression and 37 (21%) depressive or anxiety disorder. High factor loadings and item-total correlations (SAD(4), alpha = 0.86) confirmed that symptoms of anxiety and depression co-occurred after MI. Mixed anxiety-depression (SAD(4)>or=3) was present in 90% of depressed MI patients and in 100% of severely depressed patients. After adjustment for standard depression symptoms (BDI; OR = 4.4, 95% CI 1.6-12.1, p = 0.004), left ventricular ejection fraction, age and sex, mixed anxiety-depression symptomatology was associated with an increased risk of depressive comorbidity (OR = 11.2, 95% CI 3.0-42.5, p < 0.0001). Mixed anxiety-depression was also independently associated with depressive or anxiety disorder (OR = 9.2, 95% CI 3.0-27.6, p < 0.0001). CONCLUSIONS: Anxiety is underrecognized in post-MI patients; however, the present findings suggest that anxiety symptomatology should not be overlooked in these patients. Depressive comorbidity after MI is characterized by symptoms of mixed anxiety-depression, after controlling for standard depression symptoms. The SAD(4) represents an easy way to recognize the increased risk of post-MI depression.     

The nature of the depressive symptomatology preceding myocardial infarction

Little is known about the nature of the depressive symptomatology preceding myocardial infarction (MI). Specification of the depressive symptomatology is important for the development of hypotheses about the biological mechanisms relating depressive symptoms to MI. To test the hypothesis that feelings of fatigue and loss of energy have the strongest predictive power of all depressive symptoms, the authors reanalyzed data from a prospective study of 3877 healthy men aged 40 to 65 years. The men's mental state was assessed using the Maastricht Questionnaire, a scale that measures vital exhaustion, which is characterized by unusual fatigue and lack of energy, increased irritability, and depressive symptoms, including demoralization. Oblique factor analysis was used to validate these dimensions. Results of Cox's regression analyses showed that the fatigue subscale has the strongest predictive power for incident MI and that depression and irritability subscales lose their predictive power when controlled for fatigue.     

Emotion-related abilities and depressive symptoms in Latina mothers and their children

This study examined the abilities of 40 Latina mothers and their 6- to 11-year-old children (20 girls, 20 boys) to recognize and produce emotion expressions and how these abilities differed as a function of maternal depressive symptoms. The results indicated that depressively symptomatic mothers were less accurate at recognizing basic emotions (e.g., happy, sad, etc.) and some mixed emotions (e.g., scared/ok combinations) than nonsymptomatic mothers, but there were no group differences for emotion production. In contrast, children of symptomatic mothers posed fewer recognizable sad expressions than their peers. Error pattern analyses also revealed that children of symptomatic mothers were more likely to mistakenly recognize happiness and to avoid posing sadness (across all basic emotions). Children's ability to pose emotions was related to their mothers' emotion production, and this was not moderated by maternal depressive symptoms. The discussion focuses on the possible interpersonal consequences of these biases and deficits in the emotion-related abilities of symptomatic mothers and their children and on the need to conduct research on the familial and cultural processes that might underlie these findings.     

Gender differences in reasons patients delay in seeking treatment for acute myocardial infarction symptoms

Patients (n = 194) with confirmed acute myocardial infarction (AMI) were interviewed to determine sociodemographic, clinical, social, behavioral, cognitive and emotional factors that contribute to delay in seeking treatment for their symptoms. Initial symptom experience was similar for men and women: both were most commonly at home when symptoms began; both were most commonly in the presence of their spouse or other family member; few patients (<10%) called the emergency medical system as their first reaction. Several factors contributed similarly to delay in men and women. Factors that exerted a differential effect on delay between men and women were age, history of AMI, type of AMI (Q-wave and non-Q-wave), concerns about not wanting to trouble others, and prior knowledge of thrombolytics. There was no difference in delay between men and women (median 3.08 versus 3.10 h), but there are important gender differences in the reasons patients delay and in their patterns of decision-making that may assist clinicians trying to tailor interventions.     

Association between depressive episode before first myocardial infarction and worse cardiac failure following infarction

Depression following myocardial infarction is associated with a higher mortality rate. The authors studied 314 patients admitted to the hospital with a first myocardial infarction to assess whether cardiac failure after the infarction, which is also linked to a higher mortality rate, was predicted by psychosocial characteristics present before the myocardial infarction. One-fifth (20.7%) of the subjects met the ICD-10 criteria for depressive episode in the 1 month before the attack. Variables independently associated with worse cardiac failure after the myocardial infarction were greater age, a history of angina preceding the infarction, and a previous depressive episode. The impact of depression on postinfarction outcome may result from the influence of preinfarction depression on the degree of cardiac failure.     

Self-report of depressive symptoms in low back pain patients

Two studies designed to examine the self-report of depressive symptoms in low back pain patients are presented. Symptoms of depression were assessed with the Beck Depression Inventory. In the first study, a sample (N = 134) of patients who presented for neurosurgical evaluation were evaluated. In the second study, a subgroup of patients found to have lumbar disc protrusion were compared to a subgroup with few or no positive physical findings at the time of physical examination. If the cut-off scores recommended by Beck were used, patients in both studies would be classified as mildly depressed. Both studies found that patients were significantly more likely to report somatic than cognitive symptoms of depression. Patients with multiple physical findings or a disc abnormality at the time of operation were not found to be more likely to report somatic symptoms than patients with few physical findings.