A nurse in an urgent care center is assessing a client who reports a sudden onset of irregular palpitations, fatigue, and dizziness. The nurse finds a rapid and irregular heart rate with a significant pulse deficit. Which of the following dysrhythmias should the nurse expect to find on the ECG?

Sinus bradycardia

Sinus tachycardia

Atrial fibrillation

First-degree AV block

Answer and Explanation

The Correct Answer is C

Choice A Reason: This is incorrect. Sinus bradycardia is a slow and regular heart rate that originates from the sinus node. It does not cause irregular palpitations, fatigue, or dizziness, unless the heart rate is very low or the client has underlying cardiac disease.

Choice B reason: This is incorrect. Sinus tachycardia is a fast and regular heart rate that originates from the sinus node. It may cause fatigue or dizziness, but not irregular palpitations or pulse deficit.

Choice C Reason: This is correct. Atrial fibrillation is a fast and irregular heart rate that originates from multiple foci in the atria. It causes irregular palpitations, fatigue, dizziness, and pulse deficit due to ineﬀective atrial contractions and variable ventricular response.

Choice D Reason: This is incorrect. First-degree AV block is a delay in the conduction of impulses from the atria to the ventricles. It does not aﬀect the heart rate or rhythm, and does not cause any symptoms.

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Correct Answer is C

Explanation

Choice A Reason: This is incorrect because cleaning the wound is not a priority when the client is bleeding profusely. Cleaning the wound can also dislodge any clots that have formed and increase bleeding.

Choice B Reason: This is incorrect because applying a tourniquet is a last resort when direct pressure fails to stop bleeding. A tourniquet can cause tissue damage, nerve injury, and infection if applied incorrectly or for too long.

Choice C Reason: This is correct because applying direct pressure over the wound is the first and most eﬀective action to stop bleeding from a wound. This is the first and most eﬀective action to stop bleeding from a wound. Direct pressure compresses the blood vessels and prevents further blood loss. The nurse should use a clean cloth or dressing to cover the wound and apply firm pressure with both hands.

Choice D Reason: This is incorrect because elevating the limb and applying ice are not eﬀective actions to stop bleeding from a wound. Elevating the limb can reduce blood ﬂow to the injured area, but it does not compress the blood vessels or prevent blood loss. Applying ice can cause vasoconstriction, but it can also damage the skin and tissues if applied for too long.

A. Smallpox B. Hydrogen cyanide C. Botulism D. Anthrax E. Sarin

Correct Answer is ["A","C","D"]

Explanation

Choice A Reason: This is correct because smallpox is a highly contagious and deadly viral disease that can be used as a biological weapon. Smallpox was eradicated in 1980, but some samples of the virus are still stored in laboratories. If released intentionally, smallpox could cause a global pandemic.

Choice B Reason: This is incorrect because hydrogen cyanide is a chemical weapon of mass destruction, not a biological one. Hydrogen cyanide is a colorless gas that interferes with cellular respiration and causes rapid death.

Choice C Reason: This is correct because botulism is a serious and potentially fatal illness caused by a toxin produced by the bacterium Clostridium botulinum. Botulism can be used as a biological weapon by contaminating food or water supplies or by aerosolizing the toxin.

Choice D Reason: This is correct because anthrax is an infection caused by the spore-forming bacterium Bacillus anthracis. Anthrax can be used as a biological weapon by releasing the spores into the air or by contaminating food or water sources.

Choice E Reason: This is incorrect because sarin is a chemical weapon of mass destruction, not a biological one. Sarin is a nerve agent that blocks the transmission of nerve impulses and causes respiratory failure and death.

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A nurse in an urgent care center is assessing a client who reports a sudden onset of irregular palpitations, fatigue, and dizziness. The nurse finds a rapid and irregular heart rate with a significant pulse deficit. Which of the following dysrhythmias should the nurse expect to find on the ECG?

Nursing Test Bank

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Correct Answer is C

Explanation

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Correct Answer is ["A","C","D"]

Explanation

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