Related Experiment Videos
[Study of the placebo effect by the pressure profile method]
Presse Medicale (Paris, France : 1983)
|January 10, 1987
Summary
Placebo administration in hypertensive patients showed varied blood pressure responses. While 50% experienced no significant change, a notable portion exhibited decreased blood pressure, indicating a placebo effect.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Hypertensive patients
- Placebo effect evaluation
- Blood pressure monitoring
Purpose:
- Assess placebo's impact on blood pressure in hypertensive patients
- Quantify blood pressure changes under placebo
- Establish reference criteria for antihypertensive drug evaluation
Summary:
- 90 hypertensive patients received a daily placebo for 8 days.
- Blood pressure profiles were recorded every 15 minutes over 12 hours.
- Results: 50% showed no significant BP change; >20% had a ~10% decrease (complete placebo effect); ~30% had a total placebo effect; <20% showed an ~8% increase.
- Heart rate decreased significantly in ~25% of patients, with no correlation to blood pressure.
- No significant difference in diastolic, systolic, and mean blood pressure was observed in 50% of cases.
Impact:
- Provides qualitative and quantitative criteria for the blood pressure profile method.
- Enhances the evaluation of antihypertensive drug efficacy.
- Highlights the significant placebo effect in hypertension management.