A nurse is interpreting a client’s ECG strip.
Which of the following components of the ECG should the nurse examine to determine the time it takes for ventricular depolarization and repolarization?

PR interval.

QT interval.

QRS complex.

ST segment.

Answer and Explanation

The Correct Answer is B

Choice A rationale

The PR interval on an ECG represents the time from the onset of atrial depolarization to the onset of ventricular depolarization. It does not measure ventricular depolarization and repolarization.

Choice B rationale

The QT interval measures the total time taken for both ventricular depolarization and repolarization. Normal QT interval ranges are typically 350 to 440 milliseconds, depending on heart rate.

Choice C rationale

The QRS complex represents the duration of ventricular depolarization but does not include the repolarization phase. The normal duration of the QRS complex is usually 0.06 to 0.10 seconds.

Choice D rationale

The ST segment represents the time during which the ventricles are depolarized. It does not measure the time taken for ventricular depolarization and repolarization, but it can indicate ischemia or infarction. .

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

Choice A rationale

Storing nitroglycerin in the bathroom medicine cabinet is incorrect. The bathroom’s humidity and heat can degrade the medication, reducing its effectiveness.

Choice B rationale

Nitroglycerin dilates cardiac blood vessels to deliver more oxygen to the heart. This action helps relieve the chest pain associated with angina by increasing blood flow.

Choice C rationale

Placing one tablet under the tongue every 5 minutes for 30 minutes is incorrect. The correct protocol is one tablet every 5 minutes for up to 15 minutes (total of 3 tablets).

Choice D rationale

Nitroglycerin does not decrease chest pain by dissolving blood clots. It works by dilating blood vessels and increasing oxygen supply to the heart muscle.

A. Calcium 10 mg/dL. B. Potassium 2.3 mEq/L. C. Chloride 99 mEq/L. D. Sodium 136 mEq/L. . .

Correct Answer is B

Explanation

Choice A rationale

Calcium 10 mg/dL is within the normal range (8.5-10.5 mg/dL) and does not require reporting. This value does not indicate any electrolyte imbalance that would necessitate immediate intervention.

Choice B rationale

Potassium 2.3 mEq/L is significantly below the normal range (3.5-5.0 mEq/L), indicating hypokalemia. This condition requires prompt reporting as it can lead to arrhythmias, muscle weakness, and other complications.

Choice C rationale

Chloride 99 mEq/L is within the normal range (98-106 mEq/L) and does not require reporting. This value indicates no chloride imbalance affecting the client's condition.

Choice D rationale

Sodium 136 mEq/L is within the normal range (135-145 mEq/L) and does not require reporting. This sodium level is not indicative of any electrolyte disturbance needing immediate medical attention. .

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 a client’s ECG strip.Which of the following components of the ECG should the nurse examine to determine the time it takes for ventricular depolarization and repolarization?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is teaching a client who has angina about nitroglycerin sublingual tablets.Which of the following statements should the nurse include in the teaching?

Correct Answer is B

Explanation

A nurse is reviewing the serum laboratory findings for a client who has hypertension and is prescribed hydrochlorothiazide.Which of the following findings should the nurse report to the provider?

Correct Answer is B

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 in a clinic is caring for a client who has a prescription for digoxin.Which of the following statements indicates the client is experiencing digoxin toxicity?

A nurse is providing discharge teaching to a client who has peripheral arterial disease (PAD). Which of the following instructions should the nurse include in the teaching?

A nurse is admitting a client who has acute heart failure following a myocardial infarction (MI). The nurse recognizes that which of the following prescriptions by the provider requires clarification?

A nurse is caring for a client who reports an area of redness, warmth, tenderness and pain in the right calf.The nurse anticipates which of the following orders when notifying the provider of this finding?

A nurse in the emergency department is caring for a client who took 3 nitroglycerin tablets sublingually for chest pain.The client reports relief from the chest pain but now he is experiencing a headache.Which of the following statements should the nurse make?

A nurse is assessing a male client who has advanced peripheral artery disease (PAD). Which of the following findings should the nurse expect?

A nurse is monitoring a client who is on telemetry.Which of the following findings on the ECG strip should the nurse recognize as normal sinus rhythm?

A nurse is interpreting a client’s ECG strip.
Which of the following components of the ECG should the nurse examine to determine the time it takes for ventricular depolarization and repolarization?