Office Blood Pressure Measurement With an Automated Device

Study Overview
=================
Brief Summary
-----------------
The investigators plan to determine if the sequence of blood pressure measurements from the sitting position to the table and vice versa has an impact on the measurements.

Detailed Description
-----------------
The investigators plan to measure blood pressure (BP) in 30 consecutive individuals presenting to the St. Elizabeth Boardman Family Health Center. The sample will include patients presenting for their scheduled appointment. Following informed consent (see attached informed consent form), the participants will be randomly assigned to one of two groups. In group A, the sequence of BP measurements will be table position (TP) followed by recommended chair position (RCP) and then, after a 30-minutes rest, the BP will be measured again in the reverse sequence, RCP then TP. In group B, the sequence will begin with BP measurements in the RCP then TP, followed by 30-minutes rest and then measurements will be repeated in the reverse order. The assignment of participants to groups A and B will be random. The BP will be measured twice in each of the positions described above, according the the accepted standard technique, using a digital blood pressure monitor, the OMRON HEM-907 XL.

Official Title
-----------------
Office Blood Pressure Measurement With an Automated Device

Conditions
-----------------
Blood Pressure

Intervention / Treatment
-----------------
* Other: BP measurement


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Patients presenting to the Family Medicine Center age between 18 and 80 Exclusion Criteria: Decline to participate for any reason Experiencing acute pain or febrile illness Pregnant Inability to get on the examination table Atrial fibrillation, arrhythmia or tachycardia

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Diagnostic
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: BP table or chair, systolic or diastolic<br>record the BP obtained in each patient position | Other: BP measurement<br>* the BP will be measured in the chair position followed by the table position and also in the reverse sequence<br>|
| Active Comparator: as above<br>as above | Other: BP measurement<br>* the BP will be measured in the chair position followed by the table position and also in the reverse sequence<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of participants whose blood pressures differ with chair to table versus table to chair positioning | Chair to table versus table to chair positional differences in mean systolic and diastolic blood pressures in mm Hg are determined for each participant using an oscillometric device. The percentage of individuals with significant differences in positional blood pressure readings leading to inconsistent blood pressure health status classification will be calculated and reported. | 4 months |