Ronnachai Kongsakon

Continuation ECT in treatment-resistant schizophrenia : a controlled study

In patients with treatment-resistant schizophrenia (TRS), this study compared the efficacy of continuation treatment with flupenthixol alone, continuation electroconvulsive therapy (ECT) alone, and combined continuation ECT and flupenthixol. One hundred fourteen TRS patients received acute treatment (Phase I) with bilateral ECT and flupenthixol (12-24 mg/day). Fifty-eight patients met remitter criteria, including clinical stability during a 3-week stabilization period, and were eligible for the continuation treatment study (Phase II). Fifty-one patients enrolled in the single-blind Phase II continuation trial, and were randomized to the three treatment groups. The duration of the Phase II study was 6 months. Assessments of outcome included the Brief Psychiatric Rating Scale, Global Assessment of Functioning, and the Mini-Mental State Examination. Forty-five patients either relapsed or completed the Phase II study, and six patients dropped out. Among completers, 6 of 15 (40%) patients relapsed in the combined continuation ECT and flupenthixol group. In both the group treated with continuation ECT alone and that with flupenthixol alone, 14 of 15 (93%) patients relapsed. Analyses of intent-to-treat and completer samples demonstrated a marked advantage for the combination treatment condition in relapse prevention. Furthermore, all eight patients who received maintenance ECT combined with neuroleptic medication (Phase III study) maintained therapeutic benefits during the follow-up period of 3-17 months after the continuation treatment study. Among TRS patients who respond to acute combination treatment with ECT and neuroleptic therapy, continuation of this combination treatment is more effective in relapse prevention than use of ECT or neuroleptic therapy alone.

Comparisons of methamphetamine psychotic and schizophrenic symptoms: A differential item functioning analysis

The concept of negative symptoms in methamphetamine (MA) psychosis (e.g., poverty of speech, flatten affect, and loss of drive) is still uncertain. This study aimed to use differential item functioning (DIF) statistical techniques to differentiate the severity of psychotic symptoms between MA psychotic and schizophrenic patients. Data of MA psychotic and schizophrenic patients were those of the participants in the WHO Multi-Site Project on Methamphetamine-Induced Psychosis (or WHO-MAIP study) and the Risperidone Long-Acting Injection in Thai Schizophrenic Patients (or RLAI-Thai study), respectively. To confirm the unidimensionality of psychotic syndromes, we applied the exploratory and confirmatory factor analyses (EFA and CFA) on the eight items of Manchester scale. We conducted the DIF analysis of psychotic symptoms observed in both groups by using nonparametric kernel-smoothing techniques of item response theory. A DIF composite index of 0.30 or greater indicated the difference of symptom severity. The analyses included the data of 168 MA psychotic participants and the baseline data of 169 schizophrenic patients. For both data sets, the EFA and CFA suggested a three-factor model of the psychotic symptoms, including negative syndrome (poverty of speech, psychomotor retardation and flatten/incongruous affect), positive syndrome (delusions, hallucinations and incoherent speech) and anxiety/depression syndrome (anxiety and depression). The DIF composite indexes comparing the severity differences of all eight psychotic symptoms were lower than 0.3. The results suggest that, at the same level of syndrome severity (i.e., negative, positive, and anxiety/depression syndromes), the severity of psychotic symptoms, including the negative ones, observed in MA psychotic and schizophrenic patients are almost the same.

Short-term effect of combined ECT and neuroleptic therapy in treatment-resistant schizophrenia

Treatment-resistant schizophrenia (TRS) is a critical public health concern. Short-term treatment with electroconvulsive therapy (ECT), combined with neuroleptics, may increase the response rate in patients with TRS, when compared with either treatment alone. We conducted an open-trial study in 59 patients with TRS with acute exacerbations, by using bilateral ECT combined with flupenthixol (dose range, 12-24 mg/day). After the first sign of clinical improvement, all patients had to pass a 3-week stabilization period during which their clinical improvement had to be sustained. The patients had to receive at least 20 ECT treatments before being considered unresponsive to ECT. Thirty-one patients were ECT responders by our criteria, 19 were non-responders, and nine were dropouts. The responder group had more male patients, paranoid type, of younger age, shorter duration of illness and duration of the current episode, less family history of schizophrenia, and higher pretreatment GAF scores. They received a lesser number of ECT treatments, a less electrical charge used, and lower doses of flupenthixol (p < 0.05). Both positive and negative symptoms improved (p < 0.05), but positive symptoms responded to a greater extent. This study supports the therapeutic efficacy of combined treatment with ECT and neuroleptic drugs. A consensus in the definition of TRS is urgently required.

Efficacy of valproate versus lithium in mania or mixed mania: a randomized, open 12-week trial

The objective of this study was to compare the efficacy and safety of valproate and lithium in bipolar I patients experiencing a manic or a mixed episode. This international, randomized, open-label, parallel-group, equivalence study included 268 patients with bipolar I disorder. The starting dose of valproate was 20 mg/kg/day and that of lithium was 800 mg/day. Treatment duration was 12 weeks. The primary outcome measure was mean change in Young Mania Rating Scale score between baseline and study end. Secondary outcome measures were response and remission rates, change in Montgomery and Åsberg Depression Rating Scale and Clinical Global Impression Bipolar Disorder instrument score, and occurrence of adverse events. The mean change from baseline in Young Mania Rating Scale score was 15.8±5.3 in the lithium group and 17.3±9.4 in the valproate group. The 90% confidence interval of the intergroup difference (−0.69; 3.31) was within prespecified equivalence limits. Response rates were 72.6% in the lithium group and 79.5% in the valproate group. Remission rates were 58.5 and 71.9%, respectively. No intergroup differences were observed in median time to treatment response (21 days) or change in Clinical Global Impression Bipolar Disorder instrument or Montgomery and Åsberg Depression Rating Scale scores. Adverse events were reported in 42.8% of patients in the lithium group and 41.5% in the valproate group. Valproate and lithium showed comparable efficacy and tolerability in the treatment of acute mania over 12 weeks.

Time to relapse and remission of bipolar disorder: findings from a 1-year prospective study in Thailand

Background and methods This study aimed to determine time to relapse and remission of mood episodes in Thai patients with bipolar disorder (BD). The Thai Bipolar Disorder Registry was a multicenter, prospective, naturalistic, observational study conducted in Thailand. Participants were adult inpatients or outpatients with Diagnostic and Statistical Manual of Mental Disorders bipolar disorder. The diagnosis of bipolar disorder, current psychiatric comorbidity, mood relapse, and mood remission were determined by using the Mini International Neuropsychiatric Interview. Relapse and remission were assessed every 2 months. Results Of 424 BD participants, 404 (95.3%) were BD I, and 258 (60.8%) were female. At entry, 260 (61.3%) had recovered, and 49 (11.6%) were recovering. During 1-year follow-up (381.7 person-years), 92 participants (21.7%) had 119 relapses or 0.31 (95% confidence interval 0.25–0.35) episodes per person-year. Among 119 relapses, 58 (48.7%), 39 (32.7%), and 21 (17.6%) of them were depressive, hypomanic, and manic episodes, respectively. Using the Kaplan–Meier method, we found that 25% of the participants relapsed in 361 days. Of the 400 participants who reached remission, 113 (28.2%) had mood relapses. Of 173 mood events accountable for remission analysis, the median time to remission was 67.5 days (72.5 days for depressive episodes versus 58.0 days for manic episodes, log rank P = 0.014). Conclusions The 1-year relapse rate in Thai patients with BD was 21.7% or 0.31 episodes per person-year. About one-fifth of recovered patients had mood relapses within 371 days. On average, a mood episode would remit in 67.5 days.

Psychosocial functioning in schizophrenia: are some symptoms or demographic characteristics predictors across the functioning domains?

This study aimed to examine symptoms/demographic characteristics as predictors for psychosocial functioning among individuals with schizophrenia. The Personal and Social Performance (PSP) scale was used to assess psychosocial functioning. Other measures of interest included were the Clinical Global Impression, Severity scale, and the Marder’s five-factor model of the Positive and Negative Syndrome Scale. This study included 199 participants with non-acute stage schizophrenia. Spearman correlation coefficients and stepwise multiple linear regression analyses were applied to determine the correlates and predictors of PSP domain/total scores. Younger age, earlier age of schizophrenia onset, severe illness, positive symptoms, negative symptoms, disorganized thought, hostility/excitement, and anxiety/depression were found to significantly correlate with poor functioning. Severe illness and negative symptoms are the main predictors of greater impairment of socially useful activities, personal and social relationships, and self-care. Further prospective studies in other settings, which would include an increased number of variables such as neurocognitive function and social support, are warranted.

Use of antidepressants in the treatment of depression in Asia: guidelines, clinical evidence, and experience revisited.

Major depressive disorder is prevalent worldwide, and only about half of those affected will experience no further episodes or symptoms. Additionally, depressive symptoms can be challenging to identify, with many patients going undiagnosed despite a wide variety of available treatment options. Antidepressants are the cornerstone of depression treatment; however, a large number of factors must be considered in selecting the treatment best suited to the individual. To help support physicians in this process, international and national treatment guidelines have been developed. This review evaluates the current use of antidepressant treatment for major depressive disorder in six Asian countries (China, Korea, Malaysia, Philippines, Taiwan, and Thailand). No remarkable differences were noted between Asian and international treatment guidelines or among those from within Asia as these are adapted from western guidelines, although there were some local variations. Importantly, a shortage of evidence‐based information at a country level is the primary problem in developing guidelines appropriate for Asia, so most of the guidelines are consensus opinions derived from western research data utilized in western guidelines. Treatment guidelines need to evolve from being consensus based to evidence based when evidence is available, taking into consideration cost/effectiveness or cost/benefit with an evidence‐based approach that more accurately reflects clinical experience as well as the attributes of each antidepressant. In everyday practice, physicians must tailor their treatment to the patients clinical needs while considering associated external factors; better tools are needed to help them reach the best possible prescribing decisions which are of maximum benefit to patients.

Recommendations for the optimal care of patients with recent‐onset psychosis in the Asia‐Pacific region

Providing optimal care to patients with recent‐onset psychosis can improve outcomes and reduce relapse. However, there is a lack of consistency of the implementation of guidelines for such patients across the Asia‐Pacific region. We determined a pragmatic set of recommendations for use on a day‐to‐day basis to help provide optimal care at this crucial stage of illness. The recommendations were developed over a series of meetings by an international faculty of 15 experts from the Asia‐Pacific region, Europe, and South Africa. A structured search of the PubMed database was conducted. This was further developed based on the facultys clinical experience and knowledge of the literature into 10 key aspects of optimal care for patients during the first five years of a diagnosis of a psychotic disorder, with particular relevance to the Asia‐Pacific region. Several common principles emerged: adherence to antipsychotic medications is crucial; substance abuse, psychiatric and medical comorbidities should be addressed; psychosocial interventions play a pivotal role; and family members can play a vital role in overall patient care. By following these recommendations, clinicians may improve outcomes for patients with recent‐onset psychosis.

Risk factors for an anxiety disorder comorbidity among Thai patients with bipolar disorder: results from the Thai Bipolar Disorder Registry

Background The aim of the study was to determine in a clinical setting the risk factors for current anxiety disorder (AD) comorbidity among Thai patients with bipolar disorder (BD), being treated under the Thai Bipolar Disorder Registry Project (TBDR). Methods The TBDR was a multisite naturalistic study conducted at 24 psychiatric units (ie, at university, provincial mental, and government general hospitals) between February 2009 and January 2011. Participants were in- or out-patients over 18 years of age who were diagnosed with BD according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition. Instruments used in this study included the Thai Mini International Neuropsychiatric Interview version 5; Thai Montgomery–Åsberg Depression Rating Scale (MADRS); Thai Young Mania Rating Scale; Clinical Global Impression of Bipolar Disorder-Severity (CGI-BP-S), CGI-BP-S-mania, CGI-BPS-depression, and CGI-BP-S-overall BP illness; and the Thai SF-36 quality of life questionnaire. Results Among the 424 BD patients, 404 (95.3%) had BD type I. The respective mean ± standard deviation of age of onset of mood disturbance, first diagnosis of BD, and first treatment of BD was 32.0±11.9, 36.1±12.2, and 36.2±12.2 years. The duration of illness was 10.7±9.0 years. Fifty-three (12.5%) of the 424 participants had a current AD while 38 (9%) had a substance use disorder (SUD). The univariate analysis revealed 13 significant risks for current AD comorbidity, which the multivariate analysis narrowed to age at first diagnosis of BD (odds ratio =0.95, P<0.01), family history of SUD (odds ratio =2.18, P=0.02), and having a higher current MADRS score (odds ratio =1.11, P<0.01). Conclusion A diagnosis of AD comorbid with BD is suggested by early-age onset of BD together with a higher MADRS score and a family history of SUD. The likelihood of AD comorbidity decreases by 5% with each passing year; early-age onset of BD is a risk while later age onset is protective. Our results underscore how SUD within the family significantly contributes to the risk of an AD comorbidity.

Evaluation of sleep profile in schizophrenia patients treated with extended-release paliperidone: an open-label prospective study in Southeast Asia

Objective To evaluate the effect of 6 months of treatment with paliperidone extended-release (ER) tablets on the sleep profile of patients with schizophrenia. Methods A total of 984 patients meeting the The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria for schizophrenia who switched their antipsychotic to paliperidone ER were recruited from 61 sites in five countries in Southeast Asia. We recorded patient demographics and assessed sleep quality and daytime drowsiness using visual analog scales. Results Approximately 70% of patients completed the 6-month study. After the use of paliperidone ER, patients reported significantly better sleep quality (76.44 vs 65.48; p<0.001) and less daytime drowsiness compared with their baseline value (23.18 vs 34.22; p<0.001). Factors predicting sleep profile improvement were completion of the study and higher baseline Positive and Negative Syndrome Scale scores. Conclusion Paliperidone ER can help schizophrenia patients to improve sleep quality and reduce daytime drowsiness; this was seen especially in the patients who completed the 6-month treatment period and had higher baseline Positive and Negative Syndrome Scale scores.