Arm position and blood pressure: an audit

Area of Science:

• Cardiovascular Medicine
• Clinical Practice
• Medical Audit

Background:

• Arm position is a known confounder in blood pressure (BP) measurement.
• The clinical practice regarding preferred arm position during BP measurement is not well-documented.
• Inconsistent arm positioning can significantly impact BP readings.

Purpose of the Study:

• To audit the preferred arm position of clinicians during blood pressure measurement.
• To assess variations in arm position preference among different clinician groups (physicians, general practitioners, nurses).
• To highlight the implications of non-standard arm positioning on hypertension diagnosis and management.

Main Methods:

• An audit of arm position preference was conducted.
• The study involved 182 clinicians, including physicians, general practitioners, and nurses.
• Data on preferred arm positions in both standing and sitting postures were collected.

Main Results:

• A significant variation in preferred arm position was observed among clinicians, both between and within professional groups.
• Approximately two-thirds of clinicians maintained the same arm position in both standing and sitting postures.
• Only 8% of clinicians preferred a horizontal arm position when sitting, and 4% when standing.

Conclusions:

• The observed variations in arm position preference can lead to falsely elevated blood pressure readings.
• This practice may contribute to the overdiagnosis and inappropriate treatment of hypertension.
• There is a need for national and international organizations to emphasize the importance of the horizontal arm position in accurate blood pressure measurement.