EKG Ch. 7-9 Quiz

What rhythm is shown in this image?

• sinus arrhythmia.

• sinus tachycardia.

• sinus rhythm.

• sinus bradycardia.

Sinus tachycardia's heart rate is

• 60—100

• less than 60

• greater than 170.

• greater than 100.

Treatment for sinus tachycardia associated with a high fever would be to

• start CPR

• give acetaminophen or ibuprofen to get the temperature down.

• give atropine.

• give beta-blockers.

Which of the following sinus rhythms would be expected with stimulation of the sympathetic nervous system?

• Sinus rhythm rate 68

• Sinus arrhythmia rate 45—73

• Sinus tachycardia rate 125

• Sinus bradycardia rate 45

Sinus rhythms all have

• inverted P waves in Lead II.

• a wavy baseline without P waves or QRS complexes.

• multiple shapes of P waves preceding the QRS complexes.

• uniform shape P waves preceding the QRS complexes.

The heart rate in this image is closest to:

• 85

• 150

• 45

• 70

What happens in sinus block?

• the pause is a multiple of the R-R intervals.

• D) the heart rate varies from 100 to 160.

• all R-R intervals are constant.

• there are P waves inside the pause.

 Atropine's mode of action is to

• speed sinus node firing and slow AV node conduction.

• speed up the rate of sinus node firing and speed conduction through the AV node.

• slow the rate of conduction through the AV node and slow sinus node firing.

• speed impulse conduction through the bundle branches and AV node.

Possible causes of sinus tachycardia include which of the following?

• Anxiety

• Fever

• Congestive Heart Failure

• All of the Above

A pause that occurs when the sinus node's impulse is not conducted out of the sinus node itself is

• sinus arrest.

• sinus bradycardia.

• sinus arrhythmia.

• sinus block.