Category One
The endocardium is the _____ of the heart
The innermost layer of tissue
Which rhythm presents a "saw-toothed" P-wave formation?
Atrial flutter
The normal range for length of a PR-interval is
0.12-0.20 seconds
A normal heart rate for adult is
60-100 beats per minute
Which is the thickest region of the myocardium?
Apex
A holter monitor should be worn how many hours?
24-72 hours
What is the standard gain setting for amplitude of an EKG?
10 mm/mV
An ECG is a graph of
Voltage & time
Which part of the hearts conduction system acts as the pacemaker of the healthy heart?
SA node
Routine cardiac testing is performed with a
12-lead EKG
Where do the leads of an EKG need to be placed?
The Anterior Thoracic Region
The "dub" sound of a heartbeat is the ____ phase
Systolic phase
Which part of the conduction system in the heart carries the action potential through the septum to the purkinje system?
Bundle branches
____ branches carry the action potential through the septum to the Purkinje system
Bundle branches
Repolarization of the heart begins in the
SA node
The depolarization of the apex is represented in the
R-wave
Deoxygenated blood would be found in the ___ ventricle and ____ artery
Right Ventricle & Pulmonary Artery
Oxygenated blood is distributed from the left ventricle to the body through the
Aorta
Also known as the mitral valve, on the left side of the heart, and an atrioventricular valve is the....
Bicuspid valve
An Intercostal space is describes as
The space between two ribs
Order of the electricity through the heart..
SA node --> AV node --> Bundle of His --> Brundle branches --> Purkinje fibers
The T-wave on an ECG lead represents
Ventricular Repolarization
The condition in which the AV valves invert during the systolic phase of the cardiac cycle is called?
Prolapse
In every small box on a grid is 0.04 seconds, and there are 5 small boxes per large box on the grid, and the R-to-R interval is 4 large boxes, how many beats per minute is a patient's heart rate?
75 BPM
The correct flow of blood through the heart is...
Right Atrium --> Right Ventricle --> Left Atrium --> Left Ventricle