Perfusion 1 & 2 Pre-Exam NCLEX Question Practice

The sympathetic nervous system would be expected to have which of the following effects? [Select all that apply] a. Stimulate the heart to beat faster b. Speed conduction through the AV node c. Cause the heart muscle to contract harder d. Decrease overall vascular volume e. Increase total peripheral resistance a. Stimulate the heart to beat faster b. Speed conduction through the AV node c. Cause the heart muscle to contract harder e. Increase total peripheral resistance Clinically, dysrhythmias, or arrhythmias, cause a. Altered cardiac output that could affect all cells b. Changes in capillary filling pressures c. Alterations in osmotic pressure d. Valvular dysfunction a. Altered cardiac output that could affect all cells 00:00 01:36 A client is brought to the ER with a suspected MI. The client is very upset because he had just had an ECG in his doctor's office and it was fine. The explanation of this common phenomenon would include the fact that a. ECG only reflects changes in cardiac output b. ECG is not an accurate test c. ECG only measures flow of electrical current through the heart at one specific moment & is not a predictor of future events d. ECG is not related to heart problem c. ECG only measures flow of electrical current through the heart at one specific moment & is not a predictor of future events Cardiac contraction and relaxation are controlled by a. Specific area of the brain b. Sympathetic nervous system c. Autonomic nervous system d. Spontaneous impulses arising within the hear c. Autonomic nervous system Drug of choice for treatment of supraventricular tachycardia a. Digoxin b. Verapamil c. Lidocaine d. Adenosin d. Adenosin A patient receiving an antiarrhythmic drug needs a. Constant cardiac monitoring & vital signs measurements until stabilized b. Frequent blood tests, including drug levels c. Antidepressant to deal with psychological depression d. Dietary changes to prevent irritation of heart muscle a. Constant cardiac monitoring & vital signs measurements until stabilized Antiarrhythmics drugs alter action potential of cardiac cells. Because they alter action potential, antiarrhythmic drugs often a. Cause HF b. Alter blood flow to the kidneys c. Cause new arrhythmias d. Cause electrolyte disturbance c. Cause new arrhythmias The conduction system of the heart includes which of the following [Select all that apply] a. SA node b. Sinuses of Valsalva c. Atrial ventricular [AV] node d. Purkinje fibers e. Coronary sinus f. Bundle of HIS a. SA node c. Atrial ventricular [AV] node d. Purkinje fibers f. Bundle of HIS Arrhythmias or dysrhythmias can be caused by which of the following? [Select all that apply] a. Hypoxia of heart muscle cells b. Acidosis near myocardial cells c. Structural damage in conduction pathway of heart d. Vasodilation in myocardial vascular bed e. Thyroid hormone imbalance f. Electrolyte imbalance a. Hypoxia of heart muscle cells b. Acidosis near myocardial cells c. Structural damage in conduction pathway of heart e. Thyroid hormone imbalance f. Electrolyte imbalance