Influence of Physostigmine on Patient-Controlled Analgesia (PCA) in Postoperative Intensive Care Patients (ANA06103)

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. Identifier: NCT00608621
Recruitment Status : Completed
First Posted : February 6, 2008
Last Update Posted : February 6, 2008
University of Mannheim
Information provided by:
Klinikum Ludwigshafen

Brief Summary:
The study is to evaluate the influence of physostigmine in the postoperative period in intensive care patients considering pain quality, opioid consumption, hemodynamics and mobilisation.

Condition or disease

Detailed Description:

Pain management is of major concern in the postoperative period, mostly based on opioids. In numerous experimental and clinical trials cholinergic mechanisms have been demonstrated to play an important antinociceptive role. Physostigmine, a central cholineresterase inhibitor, has been shown to produce analgesia and enhance opiate analgesia after systemic injection. This action is not based on µ-receptor (opioid) activity, but can be mostly explained by stimulation of serotonine (5-HT-3) receptors. The major withdrawal of utilizating physostigmine in postoperative care, is due to its short duration of action.

In the present study, we examined the effect of a continuous intavenous physostigmine application during a patient-controlled analgesia with piritramide for 48 hours compared to a placebo infusion with NaCl.

Major concern was set for consumption of analgesics, VAS-pain scale, hemodynamics, mobilisation and side effects.

Study Type : Observational
Actual Enrollment : 60 participants
Time Perspective: Prospective
Official Title: Influence of Physostigmine on Patient-Controlled Analgesia (PCA) in Postoperative Intensive Care Patients, Considering Pain Score, Opioid Consumption, Hemodynamics and Cognitive Function
Study Start Date : January 2007
Actual Primary Completion Date : October 2007
Actual Study Completion Date : October 2007

Resource links provided by the National Library of Medicine


Physostigmine 4 mg in 50 ml NaCl 0.9% per 24 h as syringe pump continuously for 48 hours, plus physostigmine 2mg (in NaCl 0.9% 50 ml)at termination of sedation

PCA: Patient-controlled analgesia with piritramide 1 mg/ml, on demand: bolus of 2 mg, maximum of 10 mg in 60 min


NaCl 0.9% 50 ml per 24 h continuously over 48 hours, plus 50 ml NaCl 0.9% at termination of sedation

PCA: Patient-controlled analgesia with piritramid 1 mg/ml, on demand: bolus of 2 mg, maximum of 10 mg in 60 min

Primary Outcome Measures :
  1. opioid consumption [ Time Frame: 48 hours ]

Secondary Outcome Measures :
  1. pain quality (VAS) mobilisation hemodynamics side effects [ Time Frame: operation to discharge from hospital ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Elective major surgery, postoperative ICU patients

Inclusion Criteria:

  • Age 18-80 years
  • Indication for postoperative pain therapy and admission to ICU
  • Weight 50-125 kg
  • Patients that are willing to participate in the present study

Exclusion Criteria:

  • Peridural anesthesia for pain management
  • Severe left ventricular function (EF <30%)
  • Severe/exacerbated COPD; Asthma
  • ASA IV-V
  • Chronic renal insufficiency(Creatinine > 1,5 mg/dl)
  • Ulcera ventriculi
  • Known allergy to any of the study agents
  • Hb preoperative <9,5 g/dl
  • Alcohol,drug and/or tablet abuse (Opioids, NSAR)
  • Emergency operation
  • Pregnancy
  • Women of childbearing age and without a negative pregnancy test
  • Severe liver disease (GOT oder GPT > 45 U/L)
  • Severe neurologica derangements (e.g. M. Parkinson, Multiple Sklerosis)
  • History of apoplexia <6 Monate or residua
  • Perioperative myocardial infarction
  • Patients that are not able to agree to the present study
  • Patients that refuse to participate in the present study
  • Patients that are part of any other study

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 identifier (NCT number): NCT00608621

Klinkum Ludwigshafen, Department of Anesthesiology
Ludwigshafen, Germany, D-67063
Sponsors and Collaborators
Klinikum Ludwigshafen
University of Mannheim
Principal Investigator: Christoph Konrad, Prof. University Hospital Mannheim, Department of Anesthesiology
Study Director: Kerstin D. Roehm, MD Klinikum Ludwigshafen, Department of Anesthesiology

Responsible Party: Klinikum Ludwigshafen, Dep. of Anesthesiology, Dr. K. D. Röhm Identifier: NCT00608621     History of Changes
Other Study ID Numbers: ANA06103
First Posted: February 6, 2008    Key Record Dates
Last Update Posted: February 6, 2008
Last Verified: December 2007

Keywords provided by Klinikum Ludwigshafen:
postoperative analgesia
patient-controlled analgesia
Opioid consumption
Pain quality (VAS Score)
Side effects

Additional relevant MeSH terms:
Cholinesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Cholinergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Autonomic Agents
Peripheral Nervous System Agents