Atrial septal defect doppler

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Atrial Septal Defect Microchapters

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Patient Information

Overview

Anatomy

Classification

Ostium Secundum Atrial Septal Defect
Ostium Primum Atrial Septal Defect
Sinus Venosus Atrial Septal Defect
Coronary Sinus
Patent Foramen Ovale
Common or Single Atrium

Pathophysiology

Epidemiology and Demographics

Risk Factors

Natural History and Prognosis

Complications

Diagnosis

History and Symptoms

Physical Examination

Electrocardiogram

Chest X Ray

CT

MRI

Echocardiography

Transesophageal Echocardiography
Transthoracic Echocardiography
Contrast Echocardiography
M-Mode
Doppler

Transcranial Doppler Ultrasound

Cardiac Catheterization

Exercise Testing

ACC/AHA Guidelines for Evaluation of Unoperated Patients

Treatment

Medical Therapy

Surgery

Indications for Surgical Repair
Surgical Closure
Minimally Invasive Repair


Robotic ASD Repair
Percutaneous Closure
Post-Surgical Follow Up

Special Scenarios

Pregnancy
Diving and Decompression Sickness
Paradoxical Emboli
Pulmonary Hypertension
Eisenmenger's Syndrome
Atmospheric Pressure

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Case #1

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2], Cafer Zorkun, M.D., Ph.D. [3]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [4]

Overview

The doppler is an effective imaging modality to show an ASD, as well as other details such as the defect size, the direction of flow, the speed of the flow, and what therapies might be of best use. There are some disadvantages to the use of doppler.

Doppler

  • Used to demonstrate left to right flow.
  • Effective modality for:
  • Confirmation of a suspected atrial septal defect.
  • Estimation of the defect size.
  • Determination of the universal direction of flow across the septum.
  • Determination of the usage of percutaneous closure and surgical therapies.
  • Determination of high velocity flow, useful in patients with restrictive defects, obstructed pulmonary venous return and/or left atrial hypertension.

Disadvantages

  • May show false positive shunting as caval flow and incorrectly set gain may appear as left to right flow.
  • Coloring across the interatrial septum can distort the perception of the shunt flow.
  • Not effective in determination of sinus venosus defects.

References

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