Related Experiment Video

Updated: Aug 4, 2026

Hemodynamic Precision in the Neonatal Intensive Care Unit using Targeted Neonatal Echocardiography
09:31

Hemodynamic Precision in the Neonatal Intensive Care Unit using Targeted Neonatal Echocardiography

Published on: January 27, 2023

Continuous-wave Doppler in children with ventricular septal defect: noninvasive estimation of interventricular

D J Murphy, A Ludomirsky, J C Huhta

    The American Journal of Cardiology
    |February 15, 1986
    PubMed

    Insights

    Continuous-wave Doppler accurately estimates ventricular septal defect (VSD) pressure gradients in children. This noninvasive method aids in assessing right ventricular pressure and distinguishing VSD types.

    Area of Science:

    • Pediatric Cardiology
    • Echocardiography
    • Congenital Heart Disease

    Background:

    • Ventricular septal defect (VSD) is a common congenital heart anomaly.
    • Accurate pressure gradient estimation is crucial for VSD management.
    • Noninvasive methods are preferred for pediatric cardiac assessment.

    Purpose of the Study:

    • To evaluate the accuracy of continuous-wave Doppler in estimating the pressure gradient across VSDs in children.
    • To compare Doppler-derived gradients with catheterization measurements.
    • To assess the utility of Doppler in estimating right ventricular and pulmonary artery pressures.

    Main Methods:

    • Continuous-wave Doppler echocardiography was performed in 28 children with VSD.
    • Maximal velocity was measured during cardiac catheterization.
    • Doppler-predicted gradients were compared with simultaneously measured catheterization gradients.

    Main Results:

    • Doppler gradients (10-71 mm Hg) showed excellent correlation with catheterization gradients (r=0.97, p>=0.001).
    • In isolated VSD, Doppler accurately estimated right ventricular pressure (r=0.93).
    • An inverse correlation was found between pulmonary-to-systemic resistance ratio and maximal velocity (r=-0.77).

    Conclusions:

    • Continuous-wave Doppler is a precise, noninvasive tool for measuring instantaneous VSD pressure gradients in children.
    • It enables accurate estimation of right ventricular and pulmonary artery pressures in isolated VSD.
    • This method can differentiate between restrictive and nonrestrictive VSDs.

    More Related Videos

    Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge09:32

    Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

    Published on: January 20, 2023

    Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns07:13

    Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns

    Published on: December 22, 2023

    Related Concept Videos

    Assessment of apical radial pulse01:25

    Assessment of apical radial pulse

    Apical-Radial (A-R) Pulse Assessment
    The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
    Pre-Procedural Preparation
    Equipments Used To Measure Blood Pressure01:30

    Equipments Used To Measure Blood Pressure

    Direct Method
    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...
    Assessing Blood pressure using a doppler ultrasound01:19

    Assessing Blood pressure using a doppler ultrasound

    To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
    Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
    Preparation of Equipment: