A nurse is interpreting the ECG strip of a client who has bradycardia. Which of the following cardiac components should the nurse identify as the role of the P wave?

Slow repolarization of ventricular Purkinje fibers

Atrial depolarization

Early ventricular repolarization

Ventricular depolarization

Answer and Explanation

The Correct Answer is B

The P wave is the first wave on the ECG strip and represents the electrical activity of the atria. It reﬂects the depolarization of the atrial myocardium, which is the process of changing the electrical charge of the cardiac cells from negative to positive, triggering a contraction. The P wave precedes the QRS complex, which represents ventricular depolarization, and the T wave, which represents ventricular repolarization.

The other options are not correct because:

a. Slow repolarization of ventricular Purkinje fibers. This statement is incorrect because it describes the U wave, which is a small and sometimes invisible wave that follows the T wave on the ECG strip. It reﬂects the repolarization of the ventricular Purkinje fibers, which are specialized cardiac cells that conduct electrical impulses to the ventricles. The U wave is more prominent in conditions that cause hypokalemia, such as diuretic use or vomiting.

c. Early ventricular repolarization. This statement is incorrect because it describes the ST segment, which is the ﬂat line between the QRS complex and the T wave on the ECG strip. It reﬂects the early phase of ventricular repolarization, which is the process of restoring the electrical charge of the cardiac cells to negative after a contraction. The ST segment can be elevated or depressed in conditions that cause myocardial ischemia or injury, such as angina or myocardial infarction.

d. Ventricular depolarization. This statement is incorrect because it describes the QRS complex, which is the largest and most visible wave on the ECG strip. It reﬂects the depolarization of the ventricular myocardium, which triggers a ventricular contraction. The QRS complex follows the P wave and precedes the T wave on the ECG strip.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is B

Explanation

Frothy sputum is a sign of left-sided heart failure, due to the pulmonary congestion and impaired gas exchange. The sputum may be pink-tinged or blood-streaked, indicating pulmonary edema.

a. Dependent edema is more likely to be seen in clients who have right-sided heart failure, due to the increased venous pressure and ﬂuid retention. The edema is usually symmetrical and aﬀects the lower extremities, abdomen, and sometimes the face.

c. Nocturnal polyuria is not a specific finding of left-sided heart failure, but it may occur in clients who have renal impairment, diabetes mellitus, or diuretic therapy.

d. Jugular distention is another sign of right-sided heart failure, due to the increased central venous pressure and backward ﬂow of blood into the superior vena cava. It is visible as a bulging of the neck veins, especially when the client is in a semi-Fowler's position.

A. "Place the client on his back." B. "Restrain the client." C. "Insert a padded tongue blade into the client's mouth." D. "Move objects away from the client."

Correct Answer is D

Explanation

Moving objects away from the client is an important action to take during a seizure, as it can prevent injury and protect the client from harm.

"Place the client on his back." is not correct, as it can cause airway obstruction and aspiration. The client should be placed on his side, preferably in a lateral recumbent position, to allow saliva and secretions to drain from the mouth.

"Restrain the client." is not appropriate, as it can cause injury, increase agitation, or prolong the seizure. The client should be allowed to move freely during a seizure, but supported and guided away from hazards.

"Insert a padded tongue blade into the client's mouth." is not advisable, as it can cause oral trauma, choking, or damage to the teeth. The client should not have anything inserted into his mouth during a seizure, as he cannot swallow or bite his tongue. The nurse should ensure that the client's airway is clear and patent.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

A nurse is interpreting the ECG strip of a client who has bradycardia. Which of the following cardiac components should the nurse identify as the role of the P wave?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for an older adult client who has left-sided heart failure. Which of the following assessment findings should the nurse expect?

Correct Answer is B

Explanation

A nurse is teaching the family of a client who has a new diagnosis of epilepsy about actions to take if the client experiences a seizure. Which of the following instructions should the nurse include in the teaching?

Correct Answer is D

Explanation

A nurse is teaching the partner of a client who had an acute myocardial infarction (MI) about the reason blood was drawn from the client. Which of the following statements should the nurse make regarding cardiac enzyme studies?

A nurse is interpreting the ECG strip of a client who has bradycardia. Which of the following cardiac components should the nurse identify as the role of the P wave?

A nurse in a provider's clinic is assessing a client who takes sublingual nitroglycerin for stable angina. The client reports getting a headache each time he takes the medication. Which of the following statements should the nurse make?

A nurse is providing discharge instructions for a client who has congestive heart failure. Which of the following client statements indicates to the nurse that the teaching was eﬀective?

A nurse is caring for a client who has peripheral vascular disease and reports difficulty sleeping because of cold feet. Which of the following nursing actions should the nurse take to promote the client's comfort?

A nurse is performing discharge teaching for a client who has seizures and a new prescription for phenytoin. Which of the following statements by the client indicates a need for further teaching?