CH 3-4 EKG test

The ECG waveform is indicative of

How the heart is functioning electrically

The Einthoven triangle is formed by the following three limb leads

RIGHT Arm, LEFT ARM, LEFT LEG

Which of the following is not a type of lead used in a 12-lead ECG

CHEST

Which of the following is not considered a bipolar lead

aVR

The proper location to place the V1 lead is at the

FOURTH INTERCOSTAL SPACE, RIGHT STERNAL BORDER

For the proper placement of V3, you must have placed which other two leads on the patient's chest

V2 AND V4

To obtain a 12-lead ECG tracing, you must apply how many lead wires and electrodes to the patient?

10

The proper location to place the V2 lead is the

FOURTH INTERCOSTAL SPACE, LEFT STERNAL BORDER

The leads that make up a 12-lead ECG consist of

3 STANDARD, 3 AUGMENTED, AND 6 CHEST LEADS

The most common setting for standard speed rate on the ECG machine is

25 MM/SEC

The gain control is normally set at

10 mm/mV

Often it is difficult to read the ECG tracing if a patient's heart rate is fast. Where should you set the speed control to be able to interpret the ECG tracing more easily?

50 MM/sec

The usual setting for the artifact filter is

40 Hz

The ECG graph paper represents time horizontally and voltage vertically. What time and voltage are represented by one large box?

0.20 second and 0.5 mV

Each little box on the ECG paper horizontally represents

0.04 second

Which one of these is not a commonly used method to calculate heart rates?

1-MINUTE METHOD

Computerized interpretation of the ECG tracing

MUST BE VALIDATED BY A PHYSICIAN

A multichannel ECG monitors all 12 leads but usually records how many leads at one time?

3 leads

If you attempt to record an ECG and no tracing appears, what should you do?

Re-check the lead wires to make sure they are placed correctly

Which of the following is a valid reason to change the speed of the ECG tracing?

You cannot clearly identify the waves because they are too close together and the patient has an unusually rapid heart rate

The control on the ECG machine that increases or decreases the size of the ECG tracing is the

gain control

Which type of electrode is most commonly used to perform and ECG

disposable

You are preparing to perform an ECG on patient. When you open an new package of disposable electrodes, you notice that the gel appears to have dried out on some of the electrodes. What should you do?

DISCARD THE ELECTRODES AND OPEN ANOTHER PACKAGE

The first thing that is needed to perform an ECG is?

A physician order for the test.

You have an order to perform an ECG on a 76-year-old woman. You knock on the door to her hospital room, introduce yourself, and explain that you are going to perform an ECG. You explain the procedure, but the woman refuses to allow you to do the ECG. What should you say to the patient?

"Will you tell me why you don't wish to have an ECG done?"

While preparing to perform an ECG on a 15-year-old girl, you pull the curtain around her hospital bed. The patient becomes agitated and asks why you closed the curtain. What should you tell her?

You are providing privacy for the patient.

When properly positioning the chest lead electrodes, you should make sure that the electrode is placed on the _ of the rib?

intercostal space

When applying the chest leads you will place the v6 lead?

In line with v4 in the midaxillary line.

Which of the following chest leads are placed on the chest using specific anatomical landmarks?

V1-V6

When applying chest leads, you will place V4 lead?

At the fifth ICS, left midclavicular line.

When applying chest leads you will place the V2 lead?

At the 4th ICS, left sternal border.

You should place the limb electrodes before the chest electrodes because?

The ECG will not run at all without limb leads.

When placing the chest electrodes on a female with large breasts you must?

Lift the breast and place the electrode in the closest position possible.

You are a bout to record an ECG on a patient who has Parkinson's disease. What measures can you take to prevent somatic tremors from being recorded on the ECG recording

Have the patient put his or her hands, palms down, under the buttocks

Which of the following problems can cause wandering baseline on the ECG tracing

Improperly applied electrodes or poor skin preparation

You are preparing to perform a 12-lead ECG on a 7-year-old child. When communicating with this patient, you should:

avoid using technical words

For infants and small children, where may you have to place lead V3 to prevent crowding of the chest electrodes?

On the right side of the chest

If your patient is in a permanent fetal position with her arms drawn tightly over the chest, where do you position the electrodes?

on the back

If a patient has breast implants, what modification may be necessary when you place the chest electrodes?

Place V1 and V2 a little higher on the chest.

How should you position a pregnant woman for an ECG?

Rolled slightly to her left side

For which of the following patients might a physician order a right-side 12-lead ECG?

A patient with dextrocardia

Where should you place V7 when you are performing a posterior 12-lead ECG?

In a straight line from V6 on the left posterior axillary line

If a patient has a seizure while you are performing an ECG, you should

protect the patient from injury, keep recording and document seizure

Which anatomical landmark starts in the middle of the axillia and runs down the side of the chest?

Midaxillary line