1.Persistent parkinsonism after high dose intravenous methamphetamine: A case report
Ka Lam Alan Tang ; Huajun Liang ; Yong Lin ; Chenxi Zhang ; Wai Kwong Tang ; Winnie Chui Wing Chu ; Gabor Sandor Ungvari
Neurology Asia 2017;22(1):77-80
A patient developed persistent parkinsonism after intravenously injecting a high dose of methamphetamine.
Magnetic resonance imaging revealed bilateral hypoxic/ischemic basal ganglia damage, which could have
been caused by the vasoconstrictive effect of methamphetamine. This case adds some circumstantial
evidence to the association between methamphetamine and Parkinsonism.
Key words: Parkinsonism; methamphetamine; substance use disorders
Parkinsonian Disorders
;
Methamphetamine
2.Depression after Subarachnoid Hemorrhage: A Systematic Review
Wai Kwong TANG ; Lisha WANG ; George KWOK CHU WONG ; Gabor S. UNGVARI ; Fumihiko YASUNO ; Kelvin K.F. TSOI ; Jong S. KIM
Journal of Stroke 2020;22(1):11-28
Background:
and Purpose Depression is common and debilitating illness accompanying many neurological disorders including non-traumatic subarachnoid hemorrhage (SAH). The aim of this systematic review was to identify and critically appraise all published studies that have reported the frequency, severity and time course of depression after SAH, the factors associated with its development and the impact of depression on patients’ quality of life after SAH.
Methods:
The PubMed database was searched for studies published in English that recruited at least 40 patients (>18 years old) after SAH who were also diagnosed with depression.
Results:
Altogether 55 studies covering 6,327 patients met study entry criteria. The frequency of depression ranged from 0% to 61.7%, with a weighted proportion of 28.1%. Depression remained common even several years after the index SAH. Depression after SAH was associated with female sex, premorbid depression, anxiety, substance use disorders or any psychiatric disorders, and coping styles. Comorbid cognitive impairment, fatigue, and physical disability also increased the risk of depression. Aneurysmal SAH and infarction may be related to depression as well. Depression reduces the quality of life and life satisfaction in patients after SAH.
Conclusions
Depression is common after SAH and seems to persist. Further research is needed to clarify its time course and identify the neuroendocrine and neurochemical factors and brain circuits associated with the development of post-SAH depression. Randomized controlled treatment trials targeting SAH-related depression are warranted.
3.Prescription Patterns for Bipolar Disorder in Asian Countries:Findings from Research on Asian Prescription Pattern-Bipolar Disorder
Shih-Ku LIN ; Shu-Yu YANG ; Seon-Cheol PARK ; Ok-Jin JANG ; Xiaomin ZHU ; Yu-Tao XIANG ; Wen-Chen OUYANG ; Afzal JAVED ; M. Nasar SAYEED KHAN ; Sandeep GROVER ; Ajit AVASTHI ; Roy Abraham KALLIVAYALIL ; Kok Yoon CHEE ; Norliza CHEMI ; Takahiro A. KATO ; Kohei HAYAKAWA ; Pornjira PARIWATCHARAKUL ; Margarita MARAMIS ; Lakmi SENEVIRATNE ; Sim KANG ; Wai Kwong TANG ; Tin OO ; Norman SARTORIUS ; Chay-Hoon TAN ; Mian-Yoon CHONG ; Yong Chon PARK ; Naotaka SHINFUKU
Clinical Psychopharmacology and Neuroscience 2022;20(1):61-69
Objective:
Pharmacotherapy including mood stabilizers and antipsychotics are frequently used in bipolar disorder (BD); however, the lack of consensus regarding the definition of polypharmacy hinders conducting comparative studies across different settings and countries. Research on Asian Prescription Pattern (REAP) is the largest and the longest lasting international collaborative research in psychiatry in Asia. The objective of REAP BD was to investigate the prescription patterns of psychotropic medications across Asian countries. The rates of polypharmacy and psychotropic drug load were also analyzed.
Methods:
The data collection was web-based. Prescription patterns were categorized as (1) mood stabilizer monotherapy: one mood stabilizer; (2) antipsychotic monotherapy: one antipsychotic; (3) simple polypharmacy: one mood stabilizer and one antipsychotic; and (4) complex polypharmacy: ≥ 2 mood stabilizers or/and antipsychotics. The psychotropic drug load in each patient was calculated using the defined daily dose method.
Results:
Among 2003 patients with BD (52.1% female, 42.4 years) from 12 countries, 1,619 (80.8%) patients received mood stabilizers, 1,644 (82.14%) received antipsychotics, and 424 (21.2%) received antidepressants, with 14.7% mood stabilizer monotherapy, 13.4% antipsychotic monotherapy, 48.9% simple polypharmacy, 20.3% complex polypharmacy, and 2.6% other therapy. The average psychotropic drug load was 2.05 ± 1.40. Results varied widely between countries.
Conclusion
Over 70% of psychotropic regimens involved polypharmacy, which accords with the high prevalence of polypharmacy in BD under a permissive criterion (2 or more core psychotropic drugs) worldwide. Notably, ≥ 80% of our sample received antipsychotics, which may indicate an increasing trend in antipsychotic use for BD treatment.