Ad
related to: enlarged bilateral atria of the heart is called the right
Search results
Results From The WOW.Com Content Network
Atrial enlargement refers to a condition where the left atrium or right atrium of the heart is larger than would be expected. It can also affect both atria. [1] Types include: Left atrial enlargement; Right atrial enlargement
Right atrial enlargement (RAE) is clinically significant due to its prevalence in diagnosing supraventricular arrhythmias. Further, early diagnosis using risk factors like RAE may decrease mortality because patients with RAE are at 9x more risk of arrhythmias and other cardiac conditions compared to their healthy counterparts. [ 2 ]
The right atrial appendage is a pouch-like extension of the right atrium and is covered by a trabecula network of pectinate muscles. The interatrial septum separates the right atrium from the left atrium; this is marked by a depression in the right atrium – the fossa ovalis. The atria are depolarised by calcium. [6]
Cardiomegaly can be classified by the main enlarged location of the heart, and/or by the structure of the enlargement. Specific subtypes include athletic heart syndrome, which is a non-pathological condition commonly seen in sports medicine in which the heart is enlarged, and the resting heart rate is lower than normal.
There is an ear-shaped structure in the upper right atrium called the right atrial appendage, or auricle, and another in the upper left atrium, the left atrial appendage. [20] The right atrium and the right ventricle together are sometimes referred to as the right heart.
Electrodes can be inserted into and through the coronary sinus to study the electrophysiology of the heart. This includes for a coronary sinus electrogram. [5] The coronary sinus connects directly with the right atrium. It will dilate as a result of any condition that causes elevated right atrial pressure, such as pulmonary hypertension. [7]
A 12-lead ECG of a woman with Ebstein's anomaly: The ECG shows signs of right atrial enlargement, best seen in V1. Other P waves are broad and tall, these are termed "Himalayan" P waves. Also, a right bundle-branch block pattern and a first-degree atrioventricular block (prolonged PR-interval) due to intra-atrial conduction delay are seen.
The right marginal arteries perfuse the right ventricle and the posterior descending artery perfuses the left ventricular posterior and inferior walls. There is also the conus artery , which is only present in about 45 percent of the human population, and which provides collateral blood flow to the heart when the left anterior descending artery ...