Inflating one's own cuff does not increase self-recorded blood pressure

Area of Science:

• Cardiovascular Physiology
• Medical Device Technology
• Hypertension Management

Background:

• Accurate blood pressure measurement is crucial for diagnosing and managing hypertension.
• Self-monitoring of blood pressure (SMBP) is increasingly common, necessitating validated techniques.
• Concerns exist regarding potential artifacts introduced by the muscular effort of cuff self-inflation.

Purpose of the Study:

• To investigate the impact of muscular activity during blood pressure cuff self-inflation on subsequent blood pressure measurements.
• To determine the validity of self-recorded blood pressure measurements.
• To assess transient blood pressure changes induced by manual cuff inflation.

Main Methods:

• Continuous finger blood pressure monitoring using the Finapres device.
• Simultaneous recording of Korotkoff sounds during cuff inflation and deflation.
• Manual inflation of the blood pressure cuff to 200 mmHg within 5 seconds by participants.
• Controlled deflation rate of 2-3 mmHg/s by the investigator.

Main Results:

• Systolic blood pressure showed a transient peak increase of approximately 12-13 mmHg at the onset of cuff inflation.
• Both systolic and diastolic pressures returned to baseline levels within 5 seconds after deflation began.
• No significant long-term effects on blood pressure were observed due to the inflation process itself.

Conclusions:

• The muscular effort involved in self-inflating a blood pressure cuff causes a temporary and clinically insignificant elevation in blood pressure.
• Self-recorded blood pressure measurements are valid when standard inflation and deflation guidelines are adhered to.
• SMBP using manual cuff inflation is a reliable method for home blood pressure monitoring.