What question did this study set out to answer?

The study aims to assess aortic function and its relation to hypertensive patients versus normotensives before and after diltiazem administration.

September 16, 1997Circulation

Aortic Function in Arterial Hypertension Determined by Pressure-Diameter Relation

View Full Paper

Ask AI

Bookmark

Why the study?

Does diltiazem improve aortic distensibility and reduce energy loss in hypertensive and normotensive subjects?

Key Points

The study aims to assess aortic function and its relation to hypertensive patients versus normotensives before and after diltiazem administration.
Measured aortic pressure-diameter relation before and after diltiazem in 15 hypertensives and 15 normotensives.
Utilized a high-fidelity intravascular catheter for diameter measurement and a catheter-tip micromanometer for pressure measurement.
Calculated aortic distensibility and energy loss from the acquired data.
At baseline, hypertensives had lower aortic distensibility (1.4±0.3 cm² x dyne⁻¹ x 10⁻⁶) and greater energy loss (14.1±3.3 mm x mm Hg) compared to normotensives (P<.001).
After diltiazem, hypertensives showed increased distensibility (2.0±0.4 cm² x dyne⁻¹ x 10⁻⁶) and decreased energy loss (9.3±1.6 mm x mm Hg), both significant (P<.001).
Normotensives also exhibited improved metrics post-diltiazem, with distensibility reaching 5.2±0.5 cm² x dyne⁻¹ x 10⁻⁶ and energy loss at 5.0±1.2 mm x mm Hg (P<.001).

Structured PICO

Does diltiazem improve aortic distensibility and reduce energy loss in hypertensive and normotensive subjects?

Population

15 hypertensive patients and 15 control normotensive subjects (n=30)

Intervention

Diltiazem administration

Comparator

Baseline (pre-administration) and normotensive controls

Outcome

Aortic distensibility and energy loss due to aortic wall viscositysurrogate

Diltiazem acutely improves aortic elastic properties and reduces energy loss due to aortic wall viscosity in both hypertensive and normotensive subjects.

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Acute diltiazem was associated with improved aortic distensibility; hypothesis-generating for vascular effects but should not change practice without randomized trials.

Cite This Study

Stefanadis et al. (1997) studied this question.

synapsesocial.com/papers/6a6f523c26a7f98052dc04ff https://doi.org/10.1161/01.cir.96.6.1853

Topics

Hypertension management

View Full Paper

Ask AI

Bookmark

Implication

Acute diltiazem was associated with improved aortic distensibility; hypothesis-generating for vascular effects but should not change practice without randomized trials.

Aortic Function in Arterial Hypertension Determined by Pressure-Diameter Relation

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Topics

Aortic Function in Arterial Hypertension Determined by Pressure-Diameter Relation

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider