exam 3

Intrinsic rates of the conduction system

-SA node: 60-100 times/min -AV node: 40-60 times/min -Bundle of His, Purkinje fibers: 20-40 times/min

How do ACE inhibitors help cardiomyopathy?

ACE inhibitors dilate the blood vessels to improve your blood flow. This helps decrease the amount of work the heart has to do. They also help block a substance in the blood called angiotensin that is made as a result of heart failure.

A nurse assesses a patient with atrial fibrillation. Which manifestation would alert the nurse to the possibility of a serious complication from this condition?

Speech Alterations

A patient with shortness of breath has a heart rhythm of 46 beats per minute. Which medication should the nurse anticipate being prescribed for this patient?

Atropine Sulfate

A nurse cares for a client who has a heart rate averaging 56 beats/min with no adverse symptoms. Which activity modification should the nurse suggest to avoid further slowing of the heart rate?

Avoid straining while having a bowel movement.

The nurse suspects that a patient is experiencing a complication from a pulmonary artery catheter. What findings did the nurse use to make this clinical determination? Select all that apply.

Bleeding, Elevated body temperature, Acute onset of shortness of breath, Development of a cardiac dysrhythmia.

A patient arrives in the emergency department with severe chest pain. The patient reports that the pain has been occurring off and on for a week now. Which assessment finding would indicate the need for cautious use of nitrates and nitrites?

Blood pressure of 88/62 mm Hg

When assessing a patient diagnosed with angina pectoris it is most important for the nurse to gather what information?

The patients symptoms and the activities that precipitate attacks

A nurse cares for a client with congestive heart failure who has a regular cardiac rhythm of 128 beats/min. For which physiologic alterations should the nurse assess? (Select all that apply.)

Decrease in cardiac output Increase in blood pressure Decrease in urine output

A patient is scheduled for catheter ablation therapy. When describing this procedure to the patient's family, the nurse should address what aspect of the treatment

Destruction of specific cardiac cells; The procedure will use electrical energy to destroy areas of the conduction system.

Coronary artery disease risk factors

Elevated serum lipids Hypertension Tobacco use Physical inactivity obesity Diabetes Age Gender Ethnicity Family History Genetic predisposition

Cardioversion vs Defib

One major difference between cardioversion and defibrillation is the timing of the delivery of electrical current. In CARDIOVERSION, the delivery of the electrical current is synchronized with the pt's electrical events; in DEFIBRILLATION, the delivery of the current is immediate and unsynchronized.

Order of cardiac conduction system

SA node, AV node, Bundle of His, Purkinje fibers

Mean arterial pressure equation

SBP + 2( DBP)/3

What aspects should you educate about defib

Use a conducting medium between the paddles and the skin.

3rd degree av block

atria and ventricles beat independently of each other (P waves have no relation to QRS waves)

Central line

erythema, edema, or drainage. Also assess for pain or tenderness at the site

Clopidogrel

stent

pulse pressure

systolic pressure - diastolic pressure