Video Evaluations
Video: Procedure 12-1: Running a 12-Lead, Three Channel Electrocardiogram
​1.​ _____ ​The
​2.​ _____ ​
electrocardiograph is an instrument used to record the electrical activity of the heart.
The most common reason for running an ECG in the medical office is to diagnose the
presence of a myocardial infarction.
​3.​ _____ ​Patient
movement when running an electrocardiogram can cause 60-cycle interference
artifacts to appear on the ECG recording.
​4.​ _____ ​The
arms and legs should be well supported to prevent the occurrence of muscle artifacts
on the ECG recording.
​5.​ _____ ​If
the patient is uncomfortable or cold, a wandering baseline artifact may appear on the
ECG recording.
​6.​ ​___
The power cord should point away from the patient and not pass under the table to
reduce the occurrence of 60-cycle interference artifacts on the recording.
​7.​ _____ ​That
patient’s skin must be dry and free of oil and body hair for the adhesive backing of
the electrode to stick to the patient’s skin and stay on during the procedure.
​8.​ _____ ​The
electrode tabs of the arms should point downward, and the electrode tabs of the legs
should point upward.
​9.​ _____ ​If
the electrodes pull away from the patient’s skin, a wandering baseline artifact may
result on the recording.
10.​ _____ C
​ hest lead V​2​ is located at the fourth intercostal space at the right margin of the sternum.
11.​ _____ T
​ he lead wires should be arranged to follow body contour to prevent 60-cycle
interference artifacts on the recording.
12.​ _____ P
​ atient's data entered into an interpretive electrocardiograph is used to perform a
computer analysis of the recording.
13.​ _____ T
​ he standardization mark should be 20​ m
​ m high.
14.​ _____ T
​ he R wave on lead 1 should have a negative deflection.
15.​ _____ I​ f an artifact is present on the recording, correct the problem and run another ECG.
Video: Procedure 12-3: Spirometry Testing
​1.​ _____ ​Spirometry
​2.​ _____ ​A
is a noninvasive screening test for pulmonary function.
spirometer measures how much air is pushed out of the lungs and how fast it is pushed
out.
​3.​ _____ ​Spirometry
​4.​ _____ ​The
is often performed on patients exhibiting urinary tract infections.
spirometer is calibrated by injecting 3 liters of air into the spirometer from a
calibration syringe.
​5.​ _____ ​For
24 hours before spirometry, the patient must not eat a heavy meal or smoke.
​6.​ _____ ​Heavy
or constricting clothing can make it difficult to perform the procedure.
​7.​ _____ ​The
patient's data must be entered into the spirometer for the accurate calculation of
predicted values.
​8.​ _____ ​Nose
clips must be placed on the patient’s nose to prevent air from escaping from the
nostrils.
​9.​ _____​The
patient should be instructed to blow out as hard as possible and for as long as possible
until the lungs are completely empty.
10.​ _____ F
​ ear and anxiety can lead to unreliable results.
Video: Procedure 12-4: Measuring Peak Flow Rate
​1.​ _____ ​A
peak flow meter is used to measure a breathing maneuver performed by the patient.
​2.​ _____ ​A
peak flow meter is most frequently used by patients with diabetes.
​3.​ _____ ​The
sliding indicator must be moved to the bottom of the numbered scale to make it
easier for the patient to perform the breathing maneuver.
​4.​ _____ ​The
purpose of the disposable mouthpiece is to prevent the spread of microorganisms
from one patient to another.
​5.​ _____ ​The
​6.​ _____ ​If
peak flow procedure is repeated until three acceptable efforts have been obtained.
the patient performs the breathing maneuver correctly, the numbers from the three tests
should be about the same.
​7.​ _____ ​The
mouthpiece should be discarded in a biohazard waste container.
​8.​ _____ ​The
patient’s test results are determined by calculating an average of the three breathing
maneuvers.