EKG and Cardiovascular

In which of the following positions should the medical assistant place the patient who has shortness of breath for an EKG?

• Prone

• Semi-Fowler's

• Supine

• Sims'

Which of the following instructions should the medical assistant provide when preparing a patient for an EKG?

• Avoid food or drink for 4 hours prior to the test.

• Remove all clothing from the waist up.

• Apply moisturizing lotion to the electrode placement sites.

• Maintain a full bladder for the duration of the test.

Which of the following information is true of limb leads and electrodes?

• Limb leads are unipolar

• Leads V1 through V6 are limb leads

• Limb leads are placed on the fleshy areas of the skin

• The left leg lead wire serves as the ground

Which of the following should the assistant identify as the standard speed of the recording for an EKG machine?

• 25 mm/second

• 50 mm/second

• 10 mm/second

• 5 mm/second

In which of the following locations should the assistant place the V4 lead when preparing a patient for an EKG?

• 5th intercostal space at the anterior axillary line

• 5th intercostal space at the midaxillary line

• Midway between V3 and V5

• 5th intercostal space at the midclavicular line

Which of the following electrocardiograph issues could have resulted in a wandering baseline throughout an EKG tracing?

• The electrode pads were defective or poorly attached

• The machine was missing the grounding prong for the outlet

• The machine did not have the proper standardization settings set

• The cable tips were loose or had become separated

Which of the following artifacts is occurring when a medical assistant notices rhythmic sharp spikes throughout an EKG tracing?

• Wandering baseline

• Interrupted baseline

• interference

• Somatic tremor

What is the ratio of applied leads to recorded leads for a standard EKG machine?

• 10:10

• 3:6

• 10:12

• 9:12

When performing an EKG, a medical assistant notices a widened QRS complex on the patient's EKG strip. Which of the following is a possible cause of this type of artifact?

• Atrial fibrillation

• Bradycardia

• Sinus dysrhythmia

• Premature ventricular contraction

Which of the following is a state of cellular rest and is represented by a flatline on an EKG strip?

• Myocardial infarction

• Polarization

• Premature atrial contraction

• Somatic tremor