[ECG changes and their comparison with x-ray data in the late period after an operation for a secondary interatrial
Abstract:
The authors report on 78 patients operated on for congenital defect of the heart -- the secondary atrial septal defect. The changes in the ECG and X-ray data were studied prior to and at late periods after the operation (from 6 months to 8 years); the age of patients was from 2 to 47 years. Regress of ECG signs of hypertrophy of the right ventricle was seen in 87.6%, and normalization of the cardiac volume in 72.7% of cases, especially in children. This speaks for the efficacy of surgical treatment.
Related Concept Videos
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Correlation between ECG and Cardiac Cycle
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Mitral Stenosis II: Clinical features and Diagnostic Tests
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Acute Coronary Syndrome III: Diagnostic Studies


