Life threatening dysrhythmias pearson questions

Life threatening dysrhythmias pearson questions ScienceMedicineCardiology KingSport432 Save N360 Cardiac Dysrhythmias Pearso...21 terms Rae_23_Preview Relias Dysrhythmia Basic A 55 terms charless_fink Preview Life-threatening dysrhythmias- Pear...106 terms xrmw3hfcg7Preview EKG Rh Teacher Sm The nurse is caring for an older adult client experiencing​ syncope, generalized​ weakness, and dyspnea. Which dysrhythmia should the nurse suspect the client is​ experiencing? (Select all that​ apply.) A.First-degree AV block B.Mobitz I​ second-degree AV block C.Third-degree AV block D.Sinus arrhythmia E.Mobitz II​ second-degree AV block B.Mobitz I​ second-degree AV block C.Third-degree AV block​ E.Mobitz II​ second-degree AV block Rationale: Mobitz I​ second-degree AV​ block, Mobitz II​ second-degree AV​ block, and​ third-degree AV block can cause​ syncope, generalized​ weakness, and dyspnea due to a decreased cardiac output. Sinus arrhythmia and​ first-degree AV block do not cause these clinical manifestations.The nurse is caring for a client who is experiencing torsades de pointes. The nurse recognizes this condition as which type of​ dysrhythmia?A.Antrioventricular conduction block B.Junctional dysrhythmia C.Ventricular tachycardia D.Ventricular fibrillation C.Ventricular tachycardia Rationale: Torsades de pointes is a type of ventricular tachycardia associated with​ long-QT syndrome​ (a prolongation of the QT​ segment).Ventricular fibrillation is extremely​ rapid, chaotic ventricular depolarization that causes the ventricles to quiver and cease​ contracting; the heart does not pump. Junctional rhythms are those that originate in AV nodal tissue. Antrioventricular conduction blocks are defects that delay or block transmission of the sinus impulse through the AV node.

The nurse is caring for a pediatric client diagnosed with an atrial dysrhythmia. Assessment findings reveal rapid pulse with frequent episodes of palpitations and decreased blood pressure. Which diagnosis should the nurse​ anticipate?A.Premature atrial contractions B.Wandering atrial pacemaker C.Sick sinus syndrome D.Wolff-Parkinson-White syndrome D.Wolff-Parkinson-White syndrome Rationale: The​ client's assessment findings support the diagnosis of​ Wolff-Parkinson-White syndrome. The​ client's assessment findings do not support the other diagnoses.The nurse is assessing a client admitted with a suspected stroke. Which dysrhythmia would support this​ diagnosis?A.Torsade de pointes B.Junctional escape rhythm C.Mobitz II​ second-degree block D.Atrial fibrillation D.Atrial fibrillation Rationale: Atrial fibrillation is characterized by disorganized atrial activity without discrete atrial​ contractions, increasing the risk for formation of thromboemboli and stroke. Mobitz II​ second-degree block, junctional escape​ rhythm, and torsades de pointes are dysrhythmias that do not support this​ client's diagnosis.The nurse is caring for a client with a​ first-degree AV block. Which clinical manifestation and history finding support this​ diagnosis?A.Normal pulse with normal blood pressure with no identified risk factors in healthy individuals B.Rapid, weak pulse with low blood pressure and a history of rheumatic heart disease C.Irregular pulse with decreased blood pressure and a history of chronic use of digoxin D.Rapid​ pulse, low blood​ pressure, decreased urinary​ output, and a history of thyrotoxicosis A.Normal pulse with normal blood pressure with no identified risk factors in healthy individuals Rationale: Clients with​ first-degree AV block will have a normal pulse and normal blood pressure.​ First-degree AV block is a benign conduction delay that generally poses no​ threat, has no​ symptoms, and requires no treatment. Impulse conduction through the AV node is​ slowed, but all atrial impulses are conducted to the ventricles. Irregular pulse with decreased blood pressure is a clinical manifestation of​ second-degree and​ third-degree heart blocks. A​ rapid, weak pulse with low blood pressure is a clinical manifestation of ventricular tachycardia. Rapid​ pulse, low blood​ pressure, and decreased urinary output is a clinical manifestation of atrial flutter.

The nurse is teaching a client with dysrhythmias preventive lifestyle choices. Which intervention is the most appropriate to reduce the body mass index​ (BMI) of 40 ​kg/m2​?A.Having a sedentary lifestyle B.Not smoking C.Eating a​ heart-healthy diet D.Managing stress C.Eating a​ heart-healthy diet ​Rationale: Not smoking and managing stress are important.​ However, a​ heart-heathy diet will help the client reduce his body mass index​ (BMI). A sedentary lifestyle will not help to decrease​ BMI; physical activity and exercise are important.The nurse is teaching an older adult client with atrial fibrillation about treatment options to prevent atrial dysrhythmias. Which collaborative therapy should the nurse identify that would eliminate the​ dysrhythmia?A.Cardiac catheterization B.Pacemaker insertion C.Ablative therapy D.Defibrillation C.Ablative therapy Rationale: Ablative therapy is used to destroy the ectopic site. Defibrillation is used in a medical emergency for dysrhythmia such as ventricular tachycardia​ (VT) or ventricular fibrillation​ (VF), not atrial fibrillation. Pacemaker insertion will not eliminate atrial fibrillation. Cardiac catheterization is an invasive medical procedure to diagnose and treat various cardiac​ conditions, not to treat dysrhythmias.Next Question The nurse is providing home care instructions to the mother of an infant suspected of having dysrhythmias. Which intervention should the nurse teach the mother for effective​ care?A.How to take her​ child's temperature B.How to feed her child when the child is having a difficult time feeding C.How to recognize when her child is stressed D.How to use the cardiorespiratory monitor and pulse oximetry D.How to use the cardiorespiratory monitor and pulse oximetry Rationale: Children suspected of having a dysrhythmia should be monitored with a cardiorespiratory monitor and pulse oximetry. Taking the​ child's temperature will not identify the dysrhythmia. The child may be fussing and have difficulty feeding when having a​ dysrhythmia, but this will not help with the diagnosis. Recognizing that the child is stressed is important but will not help with diagnosing the dysrhythmia.

The nurse is discussing pharmacologic therapies that suppress dysrhythmia formation with colleagues. Which information would be accurate for the nurse to include regarding the function of fast sodium channel​ blockers?A.Delay repolarization and prolong the relative refractory period B.Decrease SA node automaticity C.Slow impulse conduction in the atria and ventricles D.Decrease vagal tone and increase heart rate C.Slow impulse conduction in the atria and ventricles ​Rationale: Most antidysrhythmic drugs are Class I​ drugs, or fast sodium channel​ blockers; they slow impulse conduction in the atria and ventricles.​ Beta-adrenergic blockers, not fast sodium channel​ blockers, decrease SA node​ automaticity, AV conduction​ velocity, and myocardial contractility. Anticholinergic agents are used to decrease vagal tone and increase heart rate. Class III agents block potassium​ channels, delaying repolarization and prolonging the relative refractory period.The nurse is providing discharge teaching to a client who​ smokes, has​ hypertension, and is obese. Which recommendation should the nurse include in the teaching to reduce the risk for further dysrhythmias and sudden cardiac​ death? (Select all that​ apply.) A.Exercise B.​Heart-healthy diet C.Daily monitoring of pulse and rhythm D.Postdischarge chest​ x-ray E.​Smoking-cessation class A.Exercise B.​Heart-healthy diet C.Daily monitoring of pulse and rhythm E.​Smoking-cessation class Rationale: The client is at risk for sudden death from her lifestyle choices. The client needs to quit smoking and can join a​ smoking-cessation class to assist in this goal. The client needs to eat a​ heart-healthy diet and start exercising. A postdischarge chest​ x-ray will not prevent further dysrhythmias and prevent sudden cardiac death. Daily monitoring of pulse and rhythm will help identify risks.An older adult client presents with palpitations and dizziness. Which test should the nurse anticipate the healthcare provider will​ order?A.Electrocardiogram B.Exercise test C.Chest​ x-ray D.CT san A.Electrocardiogram Rationale: An electrocardiogram​ (ECG) is a noninvasive test that records the electrical activity of the heart and can diagnose any dysrhythmias that the client may be having. The client is​ dizzy, so an exercise test is not advised since the​ machine's acceleration and pitch are increased in​ intervals, and the client may fall and get hurt. A chest​ x-ray and CT scan will give a radiographic image of the​ heart, not diagnose the dysrhythmias.