Coronary Care Caffeine: Influence of Coffee on Heart Rate Post Myocardial Infarction
- Conditions
- Myocardial Infarction
- Registration Number
- NCT00137098
- Lead Sponsor
- The Royal Bournemouth Hospital
- Brief Summary
Sudden cardiac death due to a heart rhythm disturbance after a heart attack (myocardial infarction) is a common cause of death. It is well documented that sudden cardiac death after a myocardial infarct (MI) is associated with low or poor heart rate variability (HRV). HRV is a measure of beat-to-beat changes in heart rate, with a greater variation associated with a "healthier" heart. The effect of caffeine on HRV in patients at high risk for sudden cardiac death is unknown. We, the investigators at the Royal Bournemouth Hospital, aim to study the effect of coffee or tea on HRV after MI.
- Detailed Description
120 post MI patients on CCU will be studied during the first week of admission. Patients will be categorised using the following criteria: Infarct size and site; PMH; Co-morbidities; Drugs; Regular caffeine ingestion.
Patients will be randomised to receive either caffeinated or de-caffeinated coffee or tea during admission. HRV will be assessed by non-invasive Holter-monitoring on the fifth day. Salivary caffeine concentration will be assessed concurrently to assess compliance.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 100
- ST-segment elevation (trans-mural) MI; sinus rhythm.
- Age < 80 years.
- Cardiogenic shock
- Nothing by Mouth (NBM)
- Caffeine intolerance
- Atrial fibrillation, temporary or permanent pacing
- Complete heart block, bundle branch block, severe left ventricular impairment, non-ST segment MI/acute coronary syndrome
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Royal Bournemouth Hospital
🇬🇧Bournemouth, Dorset, United Kingdom