As part of a C.O.R.E., multi-site longitudinal study comparing continuation electroconvulsive therapy (ECT) vs. continuation pharmacotherapy, the authors determined the response of 253 patients with major depression to acute-phase, bilateral ECT by use of the 24-item Hamilton Rating Scale for Depression. Remission rates for three age-groups, > or =65 years; 46-64 years; and < or =45 years, were 90 percent, 89.8 percent, and 70 percent, respectively. Age, as a continuous variable, positively influenced response to treatment. Bilateral, dose-titrated ECT is a highly effective acute treatment for major depression, and older age confers a greater likelihood of achieving remission.
"Global predictors of TRD included comorbid axis I disorders and medical illnesses such as diabetes mellitus and hypertension.16) It has been reported that ECT is more effective in older patients than in younger adult patients.17,18) Accordingly, there have been many studies of ECT of elderly patients.19,20) "
[Show abstract][Hide abstract] ABSTRACT: Electroconvulsive therapy (ECT) has proven to be effective in treatment-resistant depression (TRD). In recent reports, 70% to 90% of patients with TRD responded to ECT. However, post-ECT relapse is a significant problem. There are no studies investigating risk factors associated with reintroducing ECT in depressive patients after remission previously achieved with former ECT. The aim of the present study is to examine such risk factors using a sample of TRD patients.
We conducted a chart review to examine patient outcomes and adverse events over short- and long-term periods. Forty-two patients met the criteria for major depressive disorder.
The response rate was 85.7% (36/42). There were no significant differences in the baseline characteristics of patients exhibiting remission, response or non-response. The rate of adverse events was 21.4% (9/42). Among 34 patients who were available for follow-up, 18 patients relapsed (relapse rate, 52.9%), and 6 patients were reintroduced to ECT. The patients' age and age of onset were significantly higher in the re-ECT group than non re-ECT group.
Our results suggest that older age and older age of onset might be considered for requirement of re-ECT after remission previously achieved with former ECT.
Clinical Psychopharmacology and Neuroscience 04/2013; 11(1):34-8. DOI:10.9758/cpn.2013.11.1.34
"Presence of psychotic symptoms[3,6], lower degree of prior treatment resistance [7-9] and shorter symptom duration [8,10] are relatively well established predictors of response to ECT . In addition, the CORE group reported depression in old age to be associated with a favorable outcome . In a study from Finland, younger patients suffering from moderate depression and with co- morbidity had a lower responder rate as compared to severely depressed older patients without co-morbidity . "
[Show abstract][Hide abstract] ABSTRACT: The aim of the present study is to investigate the responder rate of Electroconvulsive therapy, ECT, in clinical routine work and to define clinical characteristics predictive of response to ECT. The main hypothesis is that the responder rate of ECT might be lower in clinical routine than in controlled trials.
This is a population-based study of all patients (N = 990) treated with ECT for depressive disorders, between 2008-2010 in eight hospitals in Sweden. Patients with Clinical Global Impression-Improvement scores of 1 or 2 (much improved) within one week after ECT were considered responders to ECT. The predictive values of single clinical variables were tested by means of chi-squared tests and the relative importance was tested in a logistic regression analysis.
The responder rate was 80.1%. A higher proportion of older patients (>50 years) responded (84.3% vs. 74.2%, p < 0.001). Psychotically depressed patients responded better (88.9% vs. 81.5% for severely depressed and 72.8% for mildly depressed, p < 0.001). There were no significant differences in responder rates between patients suffering from bipolar, first or recurrent major depressive syndromes, or a depressive episode of schizoaffective disorder. Patients with personality disorder had a lower responder rate (66.2% vs. 81.4%, p < 0.001). Also, outpatients had a lower responder rate (66.3%) compared to inpatients (83.4%, p < 0.001). In the logistic regression analysis, inpatient status, psychotic symptoms, absence of schizoaffective disorder and older age were independent factors associated with response to ECT.
This study focuses exclusively on the short term responder rate with ECT in clinical practice. Similarly to results from controlled trials a high responder rate is reported. Older patients, more severely ill patients, psychotically ill patients and patients without personality disorders had the highest responder rates. Inpatients may have better outcome with ECT than outpatients.
"In the study of Tew et al. (1999) concomitant use of lorazepam was allowed and a proportion of patients received right unilateral ECT with a stimulus dose of at least 150% above seizure threshold, which is nowadays considered a less effective form of ECT (Fink and Taylor, 2007). Patients in the study of O'Connor et al. (2001) were treated with bilateral ECT and concomitant use of lorazepam and diphenhydramine was allowed. "
[Show abstract][Hide abstract] ABSTRACT: Several variables have been studied as possible predictors for the efficacy of ECT, results from the few studies assessing the influence of age on the efficacy of ECT were inconsistent. In older patients suffering from severe depression, ECT is often the treatment of choice, therefore, investigating the influence of age on ECT response is considered relevant.
At two depression units, 141 patients meeting DSM-IV criteria for major depression and scores of at least 18 on the 17-item Hamilton Rating Scale for Depression (HAM-D) were treated with bilateral ECT, twice weekly. Clinical evaluation of depressive symptoms was performed each week; scores on the HAM-D were obtained 1-3 days prior to ECT and 1-3 days after termination of the ECT course. The primary outcome criterion was defined a priori as the mean change on the HAM-D score. The influence of age on mean change on the HAM-D score was analyzed with multiple linear regression analysis, adjusted for three covariables: center, duration of the index episode and presence of psychotic features.
Age as a continuous variable had no significant effect on the efficacy of ECT as measured by mean change on the HAM-D score (SE 0.057, p=0.84).
The disproportionate distribution of patients among the three age groups appears to be the major limitation of the present study.
This study suggests that the efficacy of ECT in elderly depressed patients is at least equal to that in younger depressed patients.
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