Chapter 49 Flashcards
After preparing the ECG machine, you explained the procdure to Mrs. thomas, connected the electrodes and began tracing, as shown in the picture, you rechcked the electrodes and tgey are all placed corectly. None of the wires are loose. However, you notice that Mrs. thomas skin smells fragrent, as though she has used body lotion recently, which of the following describes the problem its possible cause
Wandering baseline caused by lotion on the skin, re prep the skin with alchohol
Ac interference can be prevented by
Making sure lead wires are not crossed and following the contour of the body
Electrical impulse sensors used to obtain an electrocardigram are called
Electrodes
Pulmonary function test are useful in monitoring which condition
chronic obstructive pulmonary disease
Electrodes for limb leads should be attached to
Fleshy portion of the limbs
Where does the transmission of electrical impulse in heart begin?
SA node
The dysrhythmia is which P waves cannot be intensified because of rapid multiple electrical signals that fire from areas of the atria other than the SA node is known as
atrial fibrillation
The greatest volume of air that can be expelled when a person preforms a rapid, forced expiration is the
forced vital capacity
If a lead does not appear on a ECG tracing, what step should be taken before repeating the tracing?
Reconnect the wire
Which of the following dysrythmia is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?
PVC’s
The time it takes for electrical impulses from the SA node to the AV node is the
P-R interval
Which of the following meausures the patients response to a constant or increasing worl load
Exercise ECG
The instrument that measures and displays the electrical impulses responsible for the cardiac cycle is a
Electrocadiogram
What is the arithmia pictured here?
Ventricular fibrillation
How is somatic interfernce on a ECG tracing prevented?
remind the patient to lie still and refrain from talking
Which of the following is a record of the waves of electrical impulse responsible for the cardiac cycle?
Electrocardiogram
Which of the following is used to assess the eletrical activity of a ptients heart over a 24hr period of normal activity?
ambulatory monitoring
If the patient has good control of her asthma, her peak flow rate is in the
Green zone
Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?
Depolarization
What is the arrhythmia pictured here?
PVC’s
The impulse that travels through both ventricles is the
S wave
Which of the following represents the time between contraction of the ventricles and recovery
S-T segment
Which of the following would be included in the patients instructions reguarding ambulatory monitoring?
Instruct the patient to record all activities, emotions, and medications taken
Which control used to adjust the position of the stylus on the ECG
centering control
Which test is utilized to measure the hearts conduction system during exercise when the deamand for oxygen is increased?
stress testing
