UPDATED ENA EMERGENCY NURSING ORIENTATION 3.0 LATEST EXAM 300+ QUESTIONS AND ANSWERS | VERIFIED ANSWERS A+ GUARANTEE

Which effect does parasympathetic stimulation have on the heart? A. It increases peripheral vascular resistance. B. It enhances atrioventricular node function. C. It shortens His-Purkinje and ventricular muscle refractoriness. D. It slows sinoatrial node discharge. - ANSWER- D. RATIONALE: Parasympathetic stimulation slows sinoatrial node discharge. Sympathetic stimulation enhances atrioventricular node function, shortens His- Purkinje and ventricular muscle refractoriness, and increases peripheral vascular resistance. Hypertension is a finding in which type of poisoning? A. Opioid B. Antidepressant C. Anticholinergic D. Organophosphate - ANSWER- C For a patient with chronic immune thrombocytopenia, which intervention is the initial treatment? A. Infuse intravenous immunoglobulin. B. Administer prednisone (Deltasone). C. Prepare the patient for a splenectomy. D. Administer cyclophosphamide (Cytoxan). - ANSWER- B. Administer prednisone (Deltasone). For which disorder is phenazopyridine (Pyridium) most commonly administered? - ANSWER- D. Urethritis Rhabdomyolysis is a complication of which type of toxicity? A. Central nervous system stimulant B. Opiate C. Tricyclic antidepressant D. Calcium channel blocker - ANSWER- A. Central nervous system stimulant Which intervention is used to treat a patient with ventricular fibrillation who has an implantable cardiac defibrillator? - ANSWER- Apply hands-free adhesive patches in the anterior-posterior position and defibrillate. For which disorder is phenazopyridine (Pyridium) most commonly administered? - ANSWER- D. Urethritis Which term defines pain caused by the stretching of a hollow organ and is described as cramping or a sensation of gas? - ANSWER- Visceral pain When a patient is in the compensatory stage of shock, the body preferentially maintains blood flow to which organs? - ANSWER- heart and brain Which laboratory test result should the nurse expect in a patient with alcoholic ketoacidosis? - ANSWER- Below normal to slightly elevated serum glucose level Which finding is characteristic of preeclampsia? - ANSWER- Proteinuria Sciatic nerve damage is associated with dislocation of which joint? A. Patellar B. Knee C. Hip D. Ankle - ANSWER- C. Hip Which intervention is indicated for a patient with circumferential full-thickness burns of the chest, inadequate chest expansion, and restlessness? - ANSWER- Escharotomy Calcium channel blockers are indicated to treat which dysrhythmia? A. Atrial fibrillation B. Accelerated junctional tachycardia C. Second-degree atrioventricular block, type II D. Polymorphic ventricular tachycardia - ANSWER- A. RATIONALE: Treatment of atrial fibrillation aims to control the rapid ventricular rate with medications, such as calcium channel blockers or beta-blockers. Calcium channel blockers are not used to treat the other dysrhythmias listed. Accelerated junctional tachycardia is a transient rhythm that only requires treatment of the underlying disorder. Patients with second-degree atrioventricular block, type II, require careful monitoring and may need transcutaneous pacing. Treatment for polymorphic ventricular tachycardia is magnesium sulfate and defibrillation if the patient's condition is unstable. Activated charcoal can absorb which substance? A. Cyanide B. Kerosene C. Lead D. Potassium - ANSWER- B Which herb can decrease the clotting time? A. Evening primrose B. Cinnamon C. Garlic D. Skull cap - ANSWER- B. Cinnamon Which medication causes urine retention? - ANSWER- D. Diphenhydramine (Benadryl) The ingestion of the foxglove plant can cause which finding? A. Hypertension B. Bradycardia C. Agitation D. Lacrimation - ANSWER- B. Bradycardia Which medication causes urine retention? - ANSWER- D. Diphenhydramine (Benadryl) For a patient with a gunshot wound, which intervention is appropriate? A. Perform a neurovascular assessment of each limb.