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Diagnosis and initial management of cyanotic heart disease in the newborn

Author
Robert L Geggel, MD
Section Editors
David R Fulton, MD
Leonard E Weisman, MD
Deputy Editor
Carrie Armsby, MD, MPH

INTRODUCTION

Cyanotic lesions comprise approximately one-third of potentially fatal forms of congenital heart disease (CHD) [1,2]. Early recognition, emergent stabilization, and transport to an appropriate cardiac care center are critically important in the outcome of newborns with these lesions.

The evaluation and initial management of cyanotic CHD in the newborn are presented here. The causes of neonatal cyanotic cardiac lesions are discussed separately. (See "Cardiac causes of cyanosis in the newborn".)

PRENATAL DIAGNOSIS

Prenatal sonograms often identify structural malformations including CHD, diaphragmatic hernia, and congenital cystic adenomatoid malformation; however, the sensitivity of CHD detection is highly variable depending on operator expertise, gestational age, fetal position, and type of defect. As a result, prenatal sonography will miss some patients with cyanotic CHD. (See "Fetal cardiac abnormalities: Screening, evaluation, and pregnancy management".)

POSTNATAL DIAGNOSIS

In affected neonates who are not identified by prenatal sonography, a clinical diagnosis of cyanotic congenital heart disease (CHD) is based on history, physical findings, chest radiography, and hyperoxia test. The diagnosis is confirmed by echocardiography.

Central cyanosis caused by reduced arterial oxygen saturation is generally perceptible when the reduced hemoglobin level exceeds 3 g/dL (figure 1) [3]. It can result from several different pathologic mechanisms that are caused by cardiac disorders, pulmonary abnormalities, or hemoglobinopathies (table 1) [3]. (See "Cardiac causes of cyanosis in the newborn", section on 'Etiology' and "Overview of cyanosis in the newborn", section on 'Hemoglobin concentration' and "Overview of cyanosis in the newborn", section on 'Central cyanosis'.)

                             

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Literature review current through: Jun 2015. | This topic last updated: Jun 17, 2014.
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