A 30 year-old male presented to the emergency department with the signs and symptoms of acute appendicitis. He was promp

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A 30 year-old male presented to the emergency department with
the signs and symptoms of acute appendicitis. He was promptly sent
to the operating room for an emergency appendectomy. The patient
was prepped and draped for the surgery, and halothane was given as
an inhalation anesthetic. Two minutes after the anesthetic was
given, the patient was noted to have an extremely elevated
temperature, muscle rigidity, and tachypnea (rapid breathing). An
arterial blood gases test revealed a metabolic acidosis, and the
serum electrolytes demonstrated hyperkalemia.
what symptoms does the patient have