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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason: This is incorrect because this client has signs of brain death, such as severe head injuries, low respiratory rate, and unresponsiveness. The nurse should tag this client as black, which means deceased or expectant.
Choice B Reason: This is incorrect because this client has non-life-threatening injuries, such as a simple fracture and scratches. The nurse should tag this client as green, which means minor or delayed care.
Choice C Reason: This is incorrect because this client has minor injuries and is able to walk around. The nurse should tag this client as green, which means minor or delayed care.
Choice D Reason: This is correct because this client has a life-threatening condition called tension pneumothorax, which requires immediate care. This client has a life-threatening condition called tension pneumothorax, which is caused by air leaking into the pleural space and compressing the lung and the heart. This can lead to respiratory failure, cardiac arrest, and death if not treated immediately. The hissing sound indicates that air is escaping from the lung through the wound. The nurse should tag this client as red, which means immediate care is needed.
Correct Answer is D
Explanation
Choice A: Decreased specific gravity is not a finding of right-sided heart failure. Specific gravity is a measure of urine concentration, which can be affected by fluid intake, dehydration, kidney function, and diuretic use. Right-sided heart failure does not directly affect urine concentration, but it can cause fluid retention and edema in the body.
Choice B: Decreased brain natriuretic peptide (BNP) is not a finding of right-sided heart failure. BNP is a hormone that is released by the heart when it is stretched or overloaded. BNP helps to lower blood pressure and reduce fluid volume by increasing urine output and dilating blood vessels. BNP levels are elevated in both left-sided and right- sided heart failure, as the heart is under increased pressure and volume.
Choice C: Increased pulmonary artery wedge pressure (PAWP) is not a finding of right-sided heart failure. PAWP is a measure of the pressure in the left atrium, which reflects the pressure in the pulmonary capillaries. PAWP is elevated in left-sided heart failure, as the blood backs up in the lungs due to impaired left ventricular function. PAWP is normal or low in right-sided heart failure, as the blood backs up in the systemic circulation due to impaired right ventricular function.
Choice D: Elevated central venous pressure (CVP) is a finding of right-sided heart failure. CVP is a measure of the pressure in the right atrium, which reflects the pressure in the systemic venous system. CVP is elevated in right-sided heart failure, as the blood backs up in the body due to impaired right ventricular function. CVP can cause jugular venous distension, hepatomegaly, splenomegaly, ascites, and peripheral edema.
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