Several major vessels enter and exit the heart. The arteries carry blood away from the heart while the veins bring blood to the heart. While Read More
Archives
Right Pulmonary Artery
Several major vessels enter and exit the heart. The arteries carry blood away from the heart while the veins bring blood to the heart. While Read More
Right Ventricle
The right ventricle ejects blood through the main branches of the left and right pulmonary arteries to the lungs. The chambers of the heart are Read More
Right Ventricular Hypertrophy
Abnormal R wave progression can occur with acute myocardial infarctions and right ventricular hypertrophy. Large, dominant R waves in leads V1 and V2 may indicate Read More
Right-Sided MI
Since an inferior MI could involve either the left or right ventricle (seldom both), a 15/18 lead ECG is warranted to help differentiate. The evidence Read More
ROSC
Return of Spontaneous Circulation Read More
RR Interval
The distance between the top of the R waves. Figure 4.15 illustrates the Q wave, QT interval and the R-R interval. A normal QT interval Read More
Rule of 300s (Triplicate Method)
The Rule of 300s (also known as the triplicate method) is useful for measuring heart rate over shorter periods (less than 3 seconds) or for Read More
Run (burst, salvo)
A sudden group of 3 or more ectopic beats or complexes (also called a burst or a salvo). 1. Six Second ECG Guidebook (2012), T Read More
S Wave
An S wave is the first wave after the R wave that dips below the baseline (isoelectric line). The end of the S wave occurs Read More