Related Experiment Video
Updated: Jun 10, 2026

Multidisciplinary Approach to Obesity Management: A Case Report
Published on: May 30, 2025
Body mass index and blood pressure measurement during pregnancy
Jennifer L Hogan1, Patrick Maguire, Nadine Farah
1Coombe Women and Infants University Hospital, Dublin, Ireland. Jennifer.Hogan@ucdconnect.ie
Objective:
The accurate measurement of blood pressure requires the use of a large cuff in subjects with a high mid-arm circumference (MAC). This prospective study examined the need for a large cuff during pregnancy and its correlation with maternal obesity.
Methods:
Maternal body mass index (BMI), fat mass, and MAC were measured.
Results:
Of 179 women studied, 15.6% were obese. With a BMI of level 1 obesity, 44% needed a large cuff and with a BMI of level 2 obesity 100% needed a large cuff.
Conclusion:
All women booking for antenatal care should have their MAC measured to avoid the overdiagnosis of pregnancy hypertension.
Related Concept Videos
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Measurement of Blood Pressure
Pre-Procedural Guidelines for Assessing Blood Pressure
Assessment of blood pressure in brachial artery(two-step method)

