NURSING 366 Sherpath week 2 cardiology.

NURSING 366 Sherpath week 2 cardiology. Week 2 Basic ekg Match the property of the cardiac conduction system with its description. Property of the cell that allows it to accept initiation of stimulation Excitability Property that moves electrical impulse along a membrane Conductivity Ability of heart muscle to respond mechanically to an impulse Contractility Ability of heart muscle to initiate an impulse, begin stimulation Automaticity List in order the pathway of the normal cardiac impulse starting at the SA node. The impulse causes the atria to contract. The impulse travels from the AV node through the bundle of His. The impulse divides into the left and right bundle branches. The impulse reaches the Purkinje fibers. The ventricles contract. An increase in the rate of cardiac impulse initiation is linked to stimulation of which component? Sympathetic nervous system Which electrolytes play key roles in polarization of the heart cells? Sodium and potassium Which wave on the ECG tracing will provide the nurse more information about atrial depolarization? B A patient asks the nurse, “Why do I need a 12-lead ECG if my heart rate is within normal limits?” The nurse responds by explaining that which heart conditions may be identified by the 12-lead ECG?Select all that apply. Cardiotoxicity Irregular rhythm Myocardial infarction Which ECG component would the nurse measure to identify the total time needed for ventricular depolarization and repolarization of a patient’s heart? D The nurse is assessing heart rate from a patient’s ECG and counts 8 R-R intervals in a 60- second stretch. The patient’s heart rate is 80 beats per minute A review of a patient’s 12-lead ECG reveals sinus bradycardia. Which information should the nurse expect to find in the patient history? Select all that apply. Marathon training Increased intracranial pressure Prolonged exposure to extreme cold A nurse is gathering the history for a patient with sinus tachycardia. Which information should be expected based on the patient’s condition? Anemia A patient presents with fatigue, dizziness and chest pain. On assessment, the patient’s heart rate is 55 beats per minute and blood pressure is 85/60. A dopamine infusion is ineffective at reducing symptoms and returning vital signs to normal. The nurse should expect the health care provider to schedule the patient for which procedure? Placement of a permanent pacemaker A patient presents with a sinus rate of 150 beats per minute and body temperature of 103 °F; the patient is otherwise clinically stable. How should the nurse prepare to manage the patient’s sinus tachycardia? Prepare to administer antipyretics. QUIZ Question 1 of 14 Which statement describes the role of the Purkinje fibers in the pathway of the normal cardiac cycle? Correct Conduction of impulses through the ventricles leading to ventricular muscle contraction Question 2 of 14 Which action results in the atria after firing of the sinoatrial (SA) node? Correct Contraction of the atria to move blood to the ventricles The SA node initiates the normal cardiac cycle. The end result is the contraction of the right and left atrium as they push blood into the ventricles.