Pathophysiology
from Section 2 - Fetal disease
Published online by Cambridge University Press: 05 February 2013
Introduction
Congenital diaphragmatic hernia (CDH) occurs in 1 in 2000 to 1 in 3800 births [1, 2]. Prenatal diagnosis carries a 2–4 times greater mortality perhaps related to larger defects and more severe pulmonary hypoplasia or associated anomalies in these infants. For fetuses identified prenatally, 25–70% are born alive of which approximately 55% survive to discharge [1–3]. Seventy percent of postnatal deaths occur within the first 24 hours [4].
Major non-pulmonary malformations occur in 15–72% of prenatally detected cases. This is associated with a fourfold increase in mortality rate compared to infants with isolated CDH; 95% of stillbirths and 60% of infants dying within the first 24 hours have non-pulmonary major malformations [3].
The diaphragmatic defect
The most common diaphragmatic defect is the posterolateral defect (Bochdalek hernia ). Anterior defects (Morgagni hernias) or total agenesis of the hemi-diaphragm are also seen. Diaphragmatic defects occur on the let in 80–90%, on the right in 5–15%, and bilateral or anterior Morgagni hernias in 2–5% of infants [3].
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.