PulseTrendingJournal ClubResearchersJournalsExplore
Instagram
HomeTrendingJournal ClubExplore
Synapse
⌘+K
Synapse
November 1, 1989Circulation

A new method for estimating left ventricular dP/dt by continuous wave Doppler-echocardiography. Validation studies at cardiac catheterization.

View Full Paper
Ask AI
Bookmark
Share

Why the study?

Does continuous wave Doppler-echocardiography accurately estimate left ventricular dP/dt compared to cardiac catheterization in patients with mitral regurgitation?

Population

50 patients in normal sinus rhythm with color Doppler-proven mitral regurgitation

Comparison

Continuous wave Doppler-echocardiography guided… vs Peak dP/dt obtained at cardiac catheterization

Design

Cross-sectional

Key result

Continuous wave Doppler-echocardiography estimation of left ventricular rate of pressure rise showed a strong linear correlation with peak dP/dt obtained at cardiac catheterization (r = 0.87).

Authors

GBG. S. BargiggiaCBC BertucciFRF Recusani

Discussion

Loading...

Member takes

Overview

May support noninvasive LV dP/dt assessment in mitral regurgitation; leaves open prospective validation before clinical adoption.

Key Points

  • The study aims to validate a new noninvasive method for estimating left ventricular pressure rise using continuous wave Doppler echocardiography.
  • Fifty patients with mitral regurgitation were included for Doppler and cardiac catheterization comparisons.
  • Doppler studies were performed simultaneously or prior to cardiac catheterization for accuracy.
  • The rate of pressure rise was calculated using velocities from the mitral regurgitation velocity curve.
  • A strong linear correlation was found between Doppler-derived rate of pressure rise (RPR) and peak dP/dt (r = 0.87, SEE = 316 mm Hg/sec).
  • Pressure rise between selected points on the velocity curve was quantified as 32 mm Hg, affecting RPR calculations.
  • Results support the feasibility of using Doppler-derived methods for assessing left ventricular pressure dynamics.

Study Design

Type

Cross-Sectional (n=50)

Structured PICO

Does continuous wave Doppler-echocardiography accurately estimate left ventricular dP/dt compared to cardiac catheterization in patients with mitral regurgitation?

P
Population
50 patients (mean age, 51 years; range, 25-66 years) in normal sinus rhythm with color Doppler-proven mitral regurgitation
I
Intervention
Continuous wave Doppler-echocardiography guided by color Doppler flow-mapping to calculate the rate of pressure rise (RPR)
C
Comparator
Peak dP/dt obtained at cardiac catheterization
O
Outcome
Correlation between Doppler-derived left ventricular RPR and peak dP/dt obtained at cardiac catheterizationsurrogate

Main Result

Effect estimate: r = 0.87

Continuous wave Doppler echocardiography of mitral regurgitant jets provides a reliable, noninvasive method for estimating left ventricular dP/dt.

Cite This Study

Bargiggia et al. (1989) conducted a cross-sectional in Mitral regurgitation (n=50). Continuous wave Doppler-echocardiography vs. Cardiac catheterization was evaluated on Correlation between Doppler-derived left ventricular rate of pressure rise and peak dP/dt (r = 0.87). Continuous wave Doppler-echocardiography estimation of left ventricular rate of pressure rise showed a strong linear correlation with peak dP/dt obtained at cardiac catheterization (r = 0.87).

synapsesocial.com/papers/6a07e298416812afca06e5e1https://doi.org/10.1161/01.cir.80.5.1287
View Full Paper
Ask AI
Bookmark
Share