Graded Blood Pressure Reduction in Hypertensive Outpatients Associated With Use of a Device to Assist With Slow Breathing
Key result
Device-guided slow breathing lowers office SBP by ~15 mm Hg compared to home monitoring alone.
- P<0.001
- n=149
Why the study?
The effects of device-guided slow breathing on office systolic blood pressure in hypertensive outpatients were studied to assess potential blood pressure reduction.
Does a device to assist with slow breathing reduce office systolic blood pressure in hypertensive outpatients?
Population
149 untrained hypertensive outpatients, 50% male, age 59+/-10 years, baseline BP 150+/-9/86+/-9 mm Hg
Comparison
Device to guide slow breathing plus home BP monitor and instructions vs home BP monitor and instructions only
Design
Randomized controlled trial at five centers
Follow-up
8 weeks
Authors
Discussion
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Implication
High device users (>180 min/8 wk) achieved larger office SBP reductions than low users or home monitoring alone; extends evidence for slow breathing as adjunct while underscoring adherence needs.
Study Design
Type
RCT (n=149)
Multicenter
Yes
Structured PICO
Does a device to assist with slow breathing reduce office systolic blood pressure in hypertensive outpatients?
P
Population
149 untrained hypertensive outpatients (mean age 59, 50% female, 77% on drug therapy) followed for 8 weeks.
I
Intervention
Device to guide slow breathing, provided alongside a home blood pressure monitor and simple written instructions, used over 8 weeks.
C
Comparator
Home blood pressure monitor and simple written instructions only.
O
Outcome
Change in office systolic blood pressure (SBP) over 8 weeks.surrogate
Main Result
Absolute Event Rate: -15% vs -9.2%
p-value: p=<0.001
Device-guided slow breathing significantly lowers office systolic blood pressure in hypertensive patients when accumulated use exceeds 180 minutes over 8 weeks.
Cite This Study
Elliott et al. (2004) conducted an RCT in Hypertension (n=149). Device to guide slow breathing vs. Home blood pressure monitor was evaluated on Change in office systolic blood pressure (p=<0.001). Device-guided slow breathing significantly lowered office SBP compared to home monitoring alone when total breathing time exceeded 180 minutes over 8 weeks (-15.0 vs -9.2 mm Hg; P<0.001 for trend).