ECG and CXR in ASD

ECG and CXR in ASD ECG in atrial septal defect Atrial fibrillation may be seen in adults. Atrial flutter can occur in ASD, even after repair. Inverted P waves seen in inferior leads indicate low atrial rhythm (also known as coronary sinus rhythm) in sinus venosus atrial septal defect. This is due to defective sinus node as the septal defect is in the region of the sinoatrial node. Classical QRS pattern in ASD is the rSR’ in V1 suggestive incomplete right bundle branch block. This pattern in ASD is due to right ventricular volume overload. QRS axis is usually rightward, more so when there is severe pulmonary hypertension. Left axis deviation is feature of ostium primum ASD. First degree AV block may be noted in both primum and secundum ASD. Familial ASD with first degree AV block has been reported in secundum ASD. This type of familial ASD has an autosomal dominant inheritance pattern. There is also a higher incidence of sudden cardiac death in this group. Right atrial overload is often seen in ASD. Left atrial overload and left ventricular volume overload patterns can occur if there is severe mitral regurgitation associated with ostium primum ASD. Notching of R wave near the apex in inferior leads has been called crochetage sign in ASD. The crochetage sign has a sensitivity of about 73% and specificity of 92%, if the sign is present in all the three inferior leads. Early disappearance of the crochetage sign after surgical correction of atrial septal defect was found in ...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: HBC Coronary sinus rhythm crochetage sign in ASD end on vessels in ASD hilar dance in ASD Low atrial rhythm pulmonary plethora Source Type: blogs