Right atrial enlargement

Right atrial enlargement
Right atrial enlargement
	Right atrial enlargement (P pulmonale)
Causes	Pulmonary Hypertension
Diagnostic method	electrocardiogram

Right atrial enlargement (RAE) is a form of cardiomegaly, or heart enlargement. It can broadly be classified as either right atrial hypertrophy (RAH), overgrowth, or dilation, like an expanding balloon. Common causes include pulmonary hypertension, which can be the primary defect leading to RAE, or pulmonary hypertension secondary to tricuspid stenosis; pulmonary stenosis or Tetralogy of Fallot i.e. congenital diseases; chronic lung disease, such as cor pulmonale. Other recognised causes are: right ventricular failure, tricuspid regurgitation, and atrial septal defect.[1]

Diagnosis

It is characterized by a high P wave amplitude (P pulmonale), i.e. a height greater than 2.5 mm in inferior ECG leads (II, III, aVF); and greater than 1.5 mm in right sided precordial leads (V1, V2). [2]

Large "a" waves on the JVP waveform can also aid in diagnosis.

References

"Size of the right atrium and associated structures". 123 sonography.com. Medical University of Vienna. 2012-08-20. Retrieved 13 December 2016.
Frank G Yanowitz MD. "Right Atrial Enlargement". ecg learning center. Eccles Health Sciences Library University of Utah. Retrieved 13 December 2016.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[1] "Size of the right atrium and associated structures". 123 sonography.com. Medical University of Vienna. 2012-08-20. Retrieved 13 December 2016.

[2] Frank G Yanowitz MD. "Right Atrial Enlargement". ecg learning center. Eccles Health Sciences Library University of Utah. Retrieved 13 December 2016.