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1.
CNS Drugs ; 32(1): 47-64, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29423659

RESUMO

This article summarises the current evidence on the risk of venous thromboembolism (VTE) with the use of antipsychotics. An increasing number of observational studies indicate an elevated risk of VTE in antipsychotic drug users. Although the use of certain antipsychotics has been associated with VTE, current data can neither conclusively verify differences in occurrence rates of VTE between first- and second-generation antipsychotics or between individual compounds, nor identify which antipsychotic drugs have the lowest risk of VTE. The biological mechanisms involved in the pathogenesis of this adverse drug reaction are still to be clarified but hypotheses such as drug-induced sedation, obesity, increased levels of antiphospholipid antibodies, enhanced platelet aggregation, hyperhomocysteinaemia and hyperprolactinaemia have been suggested. Risk factors associated with the underlying psychiatric disorder may at least partly explain the increased risk. Physicians should be aware of this potentially serious and even sometimes fatal adverse drug reaction and should consider discontinuing or switching the antipsychotic treatment in patients experiencing a VTE. Even though supporting evidence is limited, prophylactic antithrombotic treatment should be considered in risk situations for VTE.


Assuntos
Antipsicóticos/efeitos adversos , Transtornos Mentais/tratamento farmacológico , Tromboembolia Venosa/induzido quimicamente , Antipsicóticos/uso terapêutico , Humanos , Risco , Fatores de Risco , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia
2.
Ther Adv Psychopharmacol ; 6(6): 349-354, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28008348

RESUMO

BACKGROUND: The objective of this study was to investigate the concordance in attitudes of psychiatrists towards the doses of antipsychotics given to stable outpatients with schizophrenia and to examine the psychiatrists' estimates of equally potent doses of haloperidol and olanzapine. METHODS: We asked all 22 doctors serving at the psychiatry department of Jönköping County Hospital if they considered the combined dose of antipsychotics for 20 individual patients to be 'low', 'medium' or 'high'. We also asked each doctor to state the dose of haloperidol that they considered to be clinically equivalent to 20 mg/day of olanzapine. RESULTS: The inter-rater reliability (Krippendorff's alpha (α)) was 0.50, and the mean estimated dose haloperidol considered clinically equivalent to 20 mg/day of olanzapine was 4.45 mg/day. CONCLUSIONS: The inter-rater reliability (Krippendorff's α) was low, suggesting lack of agreement. The dose of antipsychotics given to a patient might thus be more influenced by which doctor they meet than the severity of the disease. The respondents in this study considered a mean dose of 4.45 mg/day of haloperidol to be clinically equivalent to 20 mg/day of olanzapine. This is a considerably lower dose than was determined by an international consensus study of antipsychotic dosing, and more in line with the available PET studies measuring central dopamine receptor blockage of optimal clinical doses.

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