Metoprolol in Acute Myocardial Infarction. A PK/PD Study

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: NCT01523054
Recruitment Status : Completed
First Posted : February 1, 2012
Last Update Posted : February 1, 2012
Information provided by (Responsible Party):

Brief Summary:

The objective of the study was to compare treatment with two different oral formulations of metoprolol, metoprolol immediate release (IR) and metoprolol extended release (CR/XL) in patients with acute myocardial infarction regarding the following:

Pharmacokinetics, peak and trough plasma concentrations and area under the plasma concentration curve.

Pharmacodynamics, hourly means of Holter recorded heart rate. Tolerability. An open, randomised design with two parallel groups was employed.

Condition or disease Intervention/treatment Phase
Acute Myocardial Infarction Drug: Metoprolol- Toprol XL Drug: Metoprolol- Lopressor Phase 1

Detailed Description:
A pharmacokinetic and pharmacodynamic study comparing metoprolol IR and metoprolol CR/XL subsequent to initial treatment with intravenous and/or oral metoprolol in patients with suspected acut myocardial infarction

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 27 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: A Pharmacokinetic and Pharmacodynamic Study Comparing Metoprolol IR and Metoprolol CR/XL Subsequent to Initial Treatment With Intravenous and/or Oral Metoprolol in Patients With Suspected Acut Myocardial Infarction
Study Start Date : February 2000
Actual Primary Completion Date : April 2002
Actual Study Completion Date : April 2002

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Heart Attack

Arm Intervention/treatment
Experimental: Metoprolol- Toprol XL
Metoprolol extended release (CR/XL) tablet 200 mg once daily
Drug: Metoprolol- Toprol XL
Extended release tablet, 200mg once daily for 4 days

Active Comparator: Metoprolol- Lopressor
Metoprolol immediate release (IR) tablet
Drug: Metoprolol- Lopressor
Immediate release tablet, Day 1 50 mg four times daily, Day 2, 3 and 4 100 mg twice daily

Primary Outcome Measures :
  1. Pharmacokinetic profile in terms of Cmax, Cmin, AUC [ Time Frame: Treatment duration: 4 days ]
    Assesment following multiple dosing of metoprolol CR/XL 200 mg once daily, or multiple dosing of metoprolol IR 200 mg daily in divided doses

  2. Pharmacodynamics in terms of Hourly means of heart rate (Holter recorded) [ Time Frame: Treatment duration: 4 days ]
    Assesment following multiple dosing of metoprolol CR/XL 200 mg once daily, or multiple dosing of metoprolol IR 200 mg daily in divided doses

  3. Safety profile in terms of adverse events [ Time Frame: Treatment duration: 4 days ]

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male and female patients admitted to the CCU with suspected acute myocardial infarction
  • Age 18 years or older
  • Treated with and tolerated the full dose of metoprolol IR 50 mr four times daily or metoprolol CR/XL 200 mg once daily on study day 1
  • Expected to stay in the CCU until the morning of study day 4
  • Sinus rhythm on the day of admission and at randomisation

Exclusion Criteria:

  • Pregnancy or childbearing potential without adequate contraception
  • Participation in a clinical study during the last 30 days or previous randomisation in the present 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): NCT01523054

Sponsors and Collaborators
Study Director: Dag Elmfeldt, MD, PHD AstraZeneca R&D Mölndal

Responsible Party: AstraZeneca Identifier: NCT01523054     History of Changes
Other Study ID Numbers: SH-MET-0027
First Posted: February 1, 2012    Key Record Dates
Last Update Posted: February 1, 2012
Last Verified: January 2012

Keywords provided by AstraZeneca:
metoprolol, acute myocardial infarction, pharmacokinetics, pharmacodynamics

Additional relevant MeSH terms:
Myocardial Infarction
Pathologic Processes
Myocardial Ischemia
Heart Diseases
Cardiovascular Diseases
Vascular Diseases
Anti-Arrhythmia Agents
Antihypertensive Agents
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Adrenergic beta-1 Receptor Antagonists
Adrenergic beta-Antagonists
Adrenergic Antagonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action