Medical Procedures D. 2. Flashcards
In the positioning of the electrodes, if the electrodes are placed too close together, the amplitude will be _________________.
A. small
B. large
C. round
D. square
A. small
The large squares on the ECG paper are equal to ________________.
A. 0.10 sec
B. 0.20 sec
C. 0.04 sec
D. 0.09 sec
B. 0.20 sec
A “V wave” will ________________ be seen in a normal EKG.
A. always
B. sometimes
C. never
D. usually
C. never
The __________ switch controls the gain or amplitude on the EKG.
A. major
B. sensitivity
C. red
D. ticker
B. sensitivity
When preparing for lead placement you should first care for ___________.
A. skin preperation
B. application of electrode wires
C. application of electrodes
D. positioning of electrodes
A. skin preparation
Conversion of a dysrhythmia to a normal rhythm by applying electric shock to the chest is called ______________
A. cardiac scan
B. pacemaker implant
C. defibrillation
D. endarterectomy
C. defibrillation
Which of the following is NOT a criteria for skin preparation for lead placement?
A. clean the skin with an alcohol wipe
B. make sure the skin is damp when applying the electrode
C. shave the hair from the skin
D. roughen the skin for better dermis contact
B. Make sure the skin is damp when applying electrode
The electrode site should be ____________.
A. clean, smooth, and dry
B. hairy
C. have plenty of skin oil present
D. moist
A. clean, smooth, and dry.
An ECG tracing measures the amount of voltage and the ________ it takes for the voltage to travel throughout the heart.
A. time
B. route
C. waves
D. lines
A. time
In the application of electrodes, secure the electrode by rubbing your finger around the __________ area.
A. center
B. gel
C. adhesive
D. peripheral
C. adhesive
When there is no variation of R-R intervals it is called ___________
A. irregular with a pattern
B. absolutely regular
C. essentially regular
D. totally regular
B. absolutely regular
Ventricular depolarization produces an electrical force or vector with 2 components: (1) magnitude or force, and (2) _________________.
A. amplitude
B. ground electrode
C. direction or shape
D. polarization
C. direction or shape
A downward or negative wave of an electrocardiogram following the P wave is the _______________.
A. R wave
B. T wave
C. Q wave
D. S wave
C. Q wave.
A premature ventricular contraction (PVC) where the QRS have the same configuration each time they appear is called ______________.
A. uniform
B. malignant
C. fused
D. bigeminy
A. uniform
When applying leads, apply the V1 lead ________________.
A. directly lateral to V4 at the anterior axillary line
B. the fourth intercostal space right sternal border
C. lateral to V5 at midaxillary line
D. fifth intercostal space midclavicular line
B. the forth intercostal space right sternal border.
Which fact is true about the P wave?
A. duration of the P wave is not greater than 0.11 sec
B. height-deflection is small, not more than 3mm
C. both a and b
D. no correct answer
C. Both a and b
Duration of the P wave is not greater then 0.11 seconds
height - deflection is small, not more then 3mm
When PVC’s fall on the T wave, occur in pairs, runs of 3 or more, or are multiform in nature, these conditions are called __________.
A. fused
B. multiform
C. life threatening
D. uniform
C. life threatening
When a vector travels away from the positive electrode, a _________ deflection results.
A. position
B. variation
C. T wave
D. negative
D. negative
The combination of sensors or electrodes used for lead #1 is ___________.
A. right arm, left leg
B. right arm, right leg
C. left arm, right arm
D. left arm, left leg
C. left arm, right arm
Concerning ECG’s for irregular rhythms, any method of rate calculation that depends on intervals between complexes is ___________.
A. acceptable
B. computed using 1/2 as fast: 300/2=150/minute
C. unreliable
D. computed by counting the number of complexes in a span of 30 large boxes
C. unreliable