OBJECTIVE:Olanzapine has been hypothesized to have superior efficacy in patients with treatment-resistant schizophrenia. The authors examined the comparative efficacy and safety of olanzapine and haloperidol in outpatients with partially responsive schizophrenia. METHOD: Sixty-three outpatients with schizophrenia who met retrospective and prospective criteria for either residual positive or residual negative symptoms entered a 16-week double-blind, parallel-groups comparison of olanzapine and haloperidol. RESULTS: There were no significant differences between the two drugs in their effect on positive or negative symptoms. There were no significant differences between the two treatment groups on measures of social and functional outcome. Olanzapine-treated patients had a significant reduction in extrapyramidal symptoms and subjective measures of stiffness and dry mouth, but the increases in systolic blood pressure and weight in olanzapine-treated patients were significantly greater than they were in haloperidol-treated patients. CONCLUSIONS:Olanzapine has limited differential benefit for either positive or negative symptoms in patients with treatment-resistant schizophrenia. Although olanzapine is associated with fewer extrapyramidal symptoms, other side effects may offset this benefit.
RCT Entities:
OBJECTIVE:Olanzapine has been hypothesized to have superior efficacy in patients with treatment-resistant schizophrenia. The authors examined the comparative efficacy and safety of olanzapine and haloperidol in outpatients with partially responsive schizophrenia. METHOD: Sixty-three outpatients with schizophrenia who met retrospective and prospective criteria for either residual positive or residual negative symptoms entered a 16-week double-blind, parallel-groups comparison of olanzapine and haloperidol. RESULTS: There were no significant differences between the two drugs in their effect on positive or negative symptoms. There were no significant differences between the two treatment groups on measures of social and functional outcome. Olanzapine-treated patients had a significant reduction in extrapyramidal symptoms and subjective measures of stiffness and dry mouth, but the increases in systolic blood pressure and weight in olanzapine-treated patients were significantly greater than they were in haloperidol-treated patients. CONCLUSIONS:Olanzapine has limited differential benefit for either positive or negative symptoms in patients with treatment-resistant schizophrenia. Although olanzapine is associated with fewer extrapyramidal symptoms, other side effects may offset this benefit.
Authors: Diana E Clarke; Jean Y Ko; Emily A Kuhl; Robert van Reekum; Rocio Salvador; Robert S Marin Journal: J Psychosom Res Date: 2010-03-31 Impact factor: 3.006
Authors: Robert W Buchanan; Julie Kreyenbuhl; Deanna L Kelly; Jason M Noel; Douglas L Boggs; Bernard A Fischer; Seth Himelhoch; Beverly Fang; Eunice Peterson; Patrick R Aquino; William Keller Journal: Schizophr Bull Date: 2009-12-02 Impact factor: 9.306
Authors: Mario Alvarez-Jiménez; César González-Blanch; Benedicto Crespo-Facorro; Sarah Hetrick; Jose Manuel Rodríguez-Sánchez; Rocio Pérez-Iglesias; Jose Luis Vázquez-Barquero Journal: CNS Drugs Date: 2008 Impact factor: 5.749
Authors: Oliver D Howes; Rob McCutcheon; Ofer Agid; Andrea de Bartolomeis; Nico J M van Beveren; Michael L Birnbaum; Michael A P Bloomfield; Rodrigo A Bressan; Robert W Buchanan; William T Carpenter; David J Castle; Leslie Citrome; Zafiris J Daskalakis; Michael Davidson; Richard J Drake; Serdar Dursun; Bjørn H Ebdrup; Helio Elkis; Peter Falkai; W Wolfgang Fleischacker; Ary Gadelha; Fiona Gaughran; Birte Y Glenthøj; Ariel Graff-Guerrero; Jaime E C Hallak; William G Honer; James Kennedy; Bruce J Kinon; Stephen M Lawrie; Jimmy Lee; F Markus Leweke; James H MacCabe; Carolyn B McNabb; Herbert Meltzer; Hans-Jürgen Möller; Shinchiro Nakajima; Christos Pantelis; Tiago Reis Marques; Gary Remington; Susan L Rossell; Bruce R Russell; Cynthia O Siu; Takefumi Suzuki; Iris E Sommer; David Taylor; Neil Thomas; Alp Üçok; Daniel Umbricht; James T R Walters; John Kane; Christoph U Correll Journal: Am J Psychiatry Date: 2016-12-06 Impact factor: 18.112
Authors: Peiyan Wong; Cecilia Chin Roei Chang; Christine E Marx; Marc G Caron; William C Wetsel; Xiaodong Zhang Journal: PLoS One Date: 2012-12-11 Impact factor: 3.240