What is an early sign of malignant hyperthermia during surgery?
Muscle rigidity
Low blood pressure
Hypothermia
Decreased heart rate
The Correct Answer is A
A. One of the earliest and hallmark signs of malignant hyperthermia (MH) is generalized muscle rigidity, especially masseter (jaw) muscle rigidity after administration of succinylcholine or volatile anesthetics. This occurs due to a genetic defect in calcium regulation in skeletal muscles.
B. Hypotension may occur later in the progression of MH due to cardiovascular collapse, but it is not an early sign.
C. MH is characterized by rapidly increasing body temperature (hyperthermia), not hypothermia.
D. Tachycardia (increased heart rate) is usually seen early in MH, not bradycardia (decreased heart rate).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. While confirming consent is important, it is usually completed during the preoperative checklist, not the primary focus of the surgical "time out."
B. Although team presence is necessary, the "time out" is specifically about verifying critical details related to the patient and procedure, not the identities of the providers.
C. The "time out" is a universal protocol established to prevent wrong-patient, wrong-site, or wrong-procedure errors. All team members pause to confirm these crucial details before the incision.
D. DNR (Do Not Resuscitate) status is reviewed during preoperative planning but is not the focus of the surgical time out process.
Correct Answer is True
Explanation
Patient's prescribed dose: 60 mg × 2 = 120 mg/24 hr
Maximum recommended dose: 80 mg/24 hr
Patient's weight: 30 kg
Recommended dosage range:
0.5 mg/kg × 30 kg = 15 mg/day
2 mg/kg × 30 kg = 60 mg/day
The prescribed 120 mg/day exceeds both the maximum safe dose of 80 mg/day and the therapeutic range for this patient (15–60 mg/day).
Therefore, the dose is not safe.
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
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.