The nurse is assessing a post-operative client and notices that the client's urine is brown and they are experiencing muscle rigidity. The vital signs are T: 102.5 F; HR: 112; RR: 20 and BP 124/84. What is the most appropriate nursing action?
Give the ordered dose of dantrolene.
Call the physician for an order for metoprolol.
Increase the rate of lactated Ringer's.
Ask the physician to order liver function tests.
The Correct Answer is A
Choice A Reason:
Dantrolene is used in the management of malignant hyperthermia, a life-threatening complication characterized by muscle rigidity and elevated temperature, often triggered by certain anesthetics. The patient's symptoms of muscle rigidity and brown urine, which may indicate myoglobinuria, along with elevated temperature and heart rate, are suggestive of this condition. Dantrolene acts by reducing calcium release from the sarcoplasmic reticulum of skeletal muscle, thereby reducing muscle contraction and metabolic demand.
Choice B Reason:
Metoprolol, a beta-blocker, is not the first-line treatment for symptoms suggestive of malignant hyperthermia. While it can reduce heart rate and blood pressure, it does not address the underlying pathophysiology of malignant hyperthermia and is not indicated in this scenario.
Choice C Reason:
Increasing the rate of lactated Ringer's solution is not the primary intervention for malignant hyperthermia. While maintaining hydration is important, it does not directly counteract the pathophysiological processes at play in malignant hyperthermia.
Choice D Reason:
While liver function tests can be important in assessing overall organ function post-operatively, they are not the immediate priority in a suspected case of malignant hyperthermia. The priority is to treat the acute and life-threatening symptoms first.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
Administering an antiemetic is an important intervention in the PACU, especially if the patient is experiencing nausea or has a history of postoperative nausea and vomiting (PONV). However, it is not the first priority. Antiemetics work by blocking the neurotransmitters that trigger the vomiting reflex. Medications such as ondansetron or promethazine may be used.
Choice B reason:
Applying sequential compression devices is a preventive measure against deep vein thrombosis (DVT), which is a risk due to immobility after surgery. These devices help improve venous return from the lower limbs by applying intermittent pressure. While important, this intervention follows after the assessment of vital signs.
Choice C reason:
Assessing vital signs is the first and foremost priority when a patient is transferred to the PACU. Vital signs, including blood pressure, heart rate, respiratory rate, and oxygen saturation, provide immediate information about the patient's hemodynamic status and can indicate the need for urgent interventions. Any evidence of respiratory or circulatory compromise requires immediate attention.
Choice D reason:
Hanging the Lactated Ringers solution is part of managing the patient's fluid status postoperatively. Lactated Ringers is an isotonic solution that helps to replace lost fluids and maintain electrolyte balance. While important for patient care, it is not the initial priority upon arrival in the PACU.
Correct Answer is ["B","D"]
Explanation
Choice A reason:
Cyanosis, or a bluish discoloration of the skin, particularly in the nail beds, is a sign of inadequate oxygenation and would not indicate successful intervention. The absence of cyanosis would be a positive outcome, reflecting improved oxygen saturation.
Choice B reason:
Lungs clear to auscultation would indicate that air is moving through all regions of the lungs without obstruction from fluid or mucus, which is a sign of recovery from pneumonia. This finding suggests that the interventions aimed at improving gas exchange, such as positioning, deep breathing exercises, and suctioning if needed, have been effective.
Choice C reason: The inability to speak in full sentences often indicates respiratory distress and would not be a sign of successful nursing intervention. An improvement would be the client's ability to speak in full sentences without difficulty, reflecting better lung function and gas exchange.
Choice D reason:
Pulse oximetry readings between 94-96% on room air are within normal limits and indicate adequate oxygen saturation and gas exchange. This is a clear sign that the client's respiratory status has improved, and the interventions for Impaired Gas Exchange have been successful.
Choice E reason:
Bronchovesicular breath sounds are normal breath sounds heard over the major bronchi and are typically moderate in pitch and intensity. However, they are not specifically indicative of successful intervention for Impaired Gas Exchange. The absence of abnormal sounds such as crackles or wheezes would be more relevant.
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