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ECG Ch 2 &3 Test 3

QuestionAnswer
The PR interval is usually _ to _ seconds 0.12 to 0.20 seconds
WHAT PART OF THE ECG TRACING REPRESENTS THE REPOLARIZATION OF THE PURKINJE FIBERS? U WAVE
WHAT PART OF THE ECG TRACING REPRESENTS THE TIME FROM THE START OF THE ATRIAL ACTIVITY TO THE START OF VENTRICULAR ACTIVITY? PR INTERVAL
WHAT PART OF THE ECG TRACING IS MEASURED FROM THE END OF THE S WAVE TO THE BEGINNING OF THE T WAVE AND NORMALLY ON THE ISOELECTRIC LINE? ST SEGMENT
WHAT WAVE ON THE ECG TRACING IS NOT ALWAYS SEEN AND SOMETIMES, WHEN SEEN, CAN INDICATE AN ELECTROLYTE IMBALANCE? U WAVE
THE HEARTS ABILITY TO CREATE ITS OWN ELECTRICAL IMPULSE IS KNOWN AS AUTOMATICITY
WHEN STIMULATE,THE SYMPATHETIC SYSTEM OF THE BODY CAUSES THE HEART RATE TO INCREASE
WHICH VESSEL OF THE BODY CONTAINS THE HIGHEST CONCENTRATION OF OXYGEN? AORTA
THE HEART IS CONTAINED INSIDE A SAC ALSO KNOWN AS THE PERICARDIAL SAC
WHICH OF THE FOLLOWING WOULD MOST LIKELY DECREASE THE HEART RATE? INCREASED BLOOD PRESSURE
Period from the beginning of one beat of the heart to the beginning of the next Cardiac cycle
Circulation of the blood through the heart and the heart muscle Coronary circulation
Blood that has little or no oxygen Deoxygenated blood
Phase of the cardiac cycle when the heart is expanding and refilling; also known as the relaxation phase Diastole
Blood having oxygen Oxygenated blood
Circulation between the heart and the entire body, excluding the lungs Systematic circulation
Transportation of the blood between the heart and lungs Pulmonary circulation
Contraction phase of the cardiac cycle, when the heart is pumping blood out to the body Systole
Normal range of left atrial end systolic dimension (LA) 1.9-4.0 cm
LA measurement location Greatest vertical distance between the anterior side of the posterior aortic wall and the anterior side of the posterior left atrial wall at end ventricular systole (leading edge to leading edge)
Normal range for aortic root end-diastolic diameter (AoR) 2.0-4.0 cm
AoR measurement location Vertical distance from outer edge of the anterior aortic root to the inner edge of the posterior aortic wall at end diastole (leading edge to leading edge)
Normal range of aortic valve systolic separation (ACS) 1.5 to 2.6 cm
Location of ACS measurement Measure the maximal opening of the aortic valve cusps during the initial part of the ventricular systole using the internal borders of the aortic cusp echoes
1 small box = ___ second(s) 0.04 seconds
1 large box = ___ second(s) 0.2 seconds
5 large boxes = ___ second(s) 1 second
Normal calibration rate of ECG 25 mm/sec
Embryologic remnant of the valves of the sinus venosus. Appears as a web like structure with a whip like motion in the right atrium and is attached to the wall of the right atrium. Chiari Network
Embryonic remnant of the IVC valve in the right atrium. Forms as a ridge along posterior wall of the right atrium and runs from the right side of the IVC to the interatrial septum where it joins the fossa ovalis Eustachian Valve
Band like structure in the right ventricle passing from the interventricular septum to the free wall of the right ventricle. It transmits the rift bundle branch from the bundle of his to the right ventricle. Moderator band
Thin string like structures in the left ventricle extending from the interventricular septum to the papillary muscles near the lateral wall of the LV False tendons
Shape of the IVS and the left ventricular outflow tract may change with age and becomes an S shape Sigmoid septum
ECG machines have three basic functions. They are Input signal processing and output display
To perform an ECG with accuracy the best source to obtain specific information about the machine is The manufactures directions
The most common used electrodes are ___ and are used _____ Disposable, once
Bipolar leads means that Both positive and negative electrodes are placed on the patient’s body
What is the purpose of LCD display To allow entry and display of patient information
The term multi channel ECG indicates that Three or more leads are recorded at one time, you do not have to mount each lead separately, and you enter all the data into the machine prior to running a tracing
What is the standard paper speed for an ECG machine 25 mm/sec
Which of the following is not a type of lead limb, augmented , input, or precordial Input
An artifact filter helps obtain a clear ECG tracing by Always ensuring accurate readings by the computer
Computerized interpretation must always Be validated by a physician
The horizontal reading of the ECG paper represents ____ and the vertical readings represents _____ Time, voltage
Which lead tracing must be augmented by the ECG machine to be able to see the different ECG waveforms lead I, lead II, lead V6 or Lead aVF Lead aVF
The Einthoven triangle is formed by using which placement sites Right arm, left arm, left leg
The only method that can be used for approximating irregular heart rhythm’s The 6 second method
Most accurate method for determining the rate of a regular rhythm is the 1500 method
What method is useful for approximating the heart rate when the rhythm is regular But is not the most accurate The R – R method
Voltage on an ECG tracing is measured in Millivolts
What ECG control regulates the output or height of the waveform Gain
Another name for chest leads Precordial leads
What leads are bipolar Limb leads
A 12 lead ECG is actually recorded using how many lead wires 10 leads which provide 12 different views for the 12 lead tracing
True or false a 12 lead ECG provides a complete picture of the hearts structure False a 12 lead ECG provides a complete picture of the hearts electrical activity
Name the limb leads Lead I, lead II and lead III
Name the three augmented leads aVR, aVL and aVF
What are the leads of the chest V1-V6
Speed of an ECG is measured in Millimeters
Created by: Behannold