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Prophylactic Olanzapine Versus Placebo for Prevention of Postoperative Delirium After Joint Replacement Surgery

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: June 18, 2008
Last Update Posted: January 21, 2009
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
The New England Baptist Hospital
In this study we wanted to determine if perioperative administration of olanzapine prior to knee or hip replacement surgery in high risk patients would prevent the onset of postoperative delirium.

Condition Intervention
Delirium Drug: olanzapine Drug: placebo

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Prevention
Official Title: A Double-Blind, Randomized, Placebo-Controlled Study of Perioperative Administration of Olanzapine to Prevent Postoperative Delirium in Joint Replacement Patients

Resource links provided by NLM:

Further study details as provided by The New England Baptist Hospital:

Primary Outcome Measures:
  • incidence of delirium [ Time Frame: days in hospital ]

Secondary Outcome Measures:
  • Complications, length of stay, hospital costs [ Time Frame: days ]

Enrollment: 495
Study Start Date: January 2005
Study Completion Date: October 2007
Primary Completion Date: August 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1 Drug: olanzapine
5 mg preoperative and 5mg postoperative prior to discharge to inpatient nursing floor
Other Name: Zyprexa
Placebo Comparator: 2 Drug: placebo
placebo administered preoperatively and postoperatively prior to discharge to inpatient nursing floor

Detailed Description:
Postoperative delirium is a serious and common (20% to 60%) complication in orthopedic surgery patients. In this study we investigate whether prophylactic administration of olanzapine can prevent delirium from occurring after knee or hip replacement in high-risk patients > 65 years of age. This is a randomized, double-blind, single center, placebo-controlled study.

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Ages Eligible for Study:   65 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • High risk for delirium age > 65 history of delirium medical comorbidities ability to give informed consent

Exclusion Criteria:

  • Dementia Alcohol abuse Current use of an antipsychotic Allergy to olanzapine
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00699946

United States, Massachusetts
New England Baptist Hospital
Boston, Massachusetts, United States, 02120
Sponsors and Collaborators
The New England Baptist Hospital
Principal Investigator: Susan Kelly, MD New England Baptist Hospital
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Ken Larsen, Director, Pastoral Care/Psychology, New England Baptist Hospital
ClinicalTrials.gov Identifier: NCT00699946     History of Changes
Other Study ID Numbers: 7381*KELLY
First Submitted: June 16, 2008
First Posted: June 18, 2008
Last Update Posted: January 21, 2009
Last Verified: January 2009

Keywords provided by The New England Baptist Hospital:
delirium, atypical antipsychotics, olanzapine, orthopedic

Additional relevant MeSH terms:
Neurobehavioral Manifestations
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms
Neurocognitive Disorders
Mental Disorders
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Gastrointestinal Agents
Antipsychotic Agents
Tranquilizing Agents
Central Nervous System Depressants
Psychotropic Drugs
Serotonin Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Serotonin Agents