Which of the following answers lists the Paralytic drug that is associated with the possible development of Malignant Hyperthermia, along with the treatment medication for Malignant Hyperthermia?
Pancuronium; Neostigmine.
Rocuronium; Dantrolene.
Vecuronium; Neostigmine.
Succinylcholine; Dantrolene.
The Correct Answer is D
Choice A rationale
Pancuronium is a non-depolarizing neuromuscular blocker, but it is not directly linked to malignant hyperthermia. Neostigmine is an acetylcholinesterase inhibitor used to reverse the effects of non-depolarizing neuromuscular blockers by increasing acetylcholine at the neuromuscular junction, not a treatment for malignant hyperthermia.
Choice B rationale
Rocuronium is a non-depolarizing neuromuscular blocker and, while generally safe, is not the primary paralytic associated with malignant hyperthermia. Dantrolene is the specific pharmacological treatment for malignant hyperthermia, acting by inhibiting calcium release from the sarcoplasmic reticulum in muscle cells, reducing muscle rigidity and hypermetabolism.
Choice C rationale
Vecuronium is a non-depolarizing neuromuscular blocker and does not directly trigger malignant hyperthermia. Neostigmine, as previously stated, is a reversal agent for non-depolarizing muscle relaxants and has no role in the treatment of malignant hyperthermia, which requires specific intervention to address altered calcium homeostasis.
Choice D rationale
Succinylcholine, a depolarizing neuromuscular blocker, is the only commonly used paralytic drug that can reliably trigger malignant hyperthermia in susceptible individuals due to its direct interaction with the ryanodine receptor. Dantrolene is the definitive treatment, acting to restore intracellular calcium homeostasis by blocking calcium release from the sarcoplasmic reticulum.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
Choice A rationale
A positive sputum culture definitively identifies the pathogenic microorganisms responsible for the infection within the lungs. This microbiological evidence is crucial for confirming the presence of pneumonia and guiding appropriate antibiotic therapy, distinguishing VAP from other pulmonary issues.
Choice B rationale
A new fever indicates a systemic inflammatory response, often triggered by an infection. In the context of a ventilated patient, a new onset of fever, particularly above 38°C (100.4°F), strongly suggests the presence of a new infection, such as ventilator-associated pneumonia.
Choice C rationale
An SpO2 of 98% indicates excellent oxygen saturation. While desirable, it does not rule out VAP, as patients can initially maintain good oxygenation despite developing an infection, especially if the pneumonia is localized or mild in its early stages.
Choice D rationale
A respiratory rate of 14 breaths per minute is within the normal range. A normal respiratory rate does not indicate the presence or absence of VAP, as patients with early or localized pneumonia might not exhibit significant changes in their respiratory patterns initially.
Choice E rationale
New infiltrates on a Chest X-Ray indicate areas of consolidation or fluid accumulation within the lung tissue. These radiological findings are highly suggestive of pneumonia, as the inflammatory process associated with infection leads to alveolar filling and opacities visible on imaging.
Correct Answer is C
Explanation
Choice A rationale
Status asthmaticus is a severe and persistent asthma attack that does not respond to conventional bronchodilator therapy, leading to respiratory distress. While it is a medical emergency, it involves the respiratory system and is distinct from neurological events like seizures.
Choice B rationale
Benzodiazepine tolerance refers to a decreased response to the drug over time, requiring higher doses to achieve the same effect. While the patient was given diazepam, the primary concern is the ongoing seizure activity despite medication, indicating a more severe seizure state, not merely tolerance.
Choice C rationale
Status epilepticus is defined as continuous seizure activity lasting longer than five minutes or two or more seizures occurring without a full recovery of consciousness between them. The patient's presentation of seizing for 10 minutes without regaining consciousness, despite receiving Diastat, strongly indicates status epilepticus.
Choice D rationale
Intermittent focal seizures are seizures that originate in a specific area of the brain and may cause localized symptoms. However, the prolonged nature of the current seizure and the lack of consciousness between episodes indicate a more severe and sustained seizure disorder than just intermittent focal seizures.
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