A 39-year-old woman is brought to the emergency room by her husband because of severe dyspnea and dizziness. Her symptoms started suddenly 30 minutes ago. She appears distressed. Arterial blood gas shows a pH of 7.51, pO2 of 100 mm Hg, and a pCO2 of 30 mm Hg. Which of the following is the most likely cause?
AMyasthenia gravis
BOpioid toxicity
CPanic attack
DEpiglottitis
EPulmonary fibrosis
A 24-year-old woman presents to the emergency department after she was found agitated and screaming for help in the middle of the street. She says she also has dizziness and tingling in the lips and hands. Her past medical history is relevant for general anxiety disorder, managed medically with paroxetine. At admission, her pulse is 125/min, respiratory rate is 25/min, and body temperature is 36.5°C (97.7°F). Physical examination is unremarkable. An arterial blood gas sample is taken. Which of the following results would you most likely expect to see in this patient?
ApH: increased, HCO3-: increased, Pco2: increased
BpH: decreased, HCO3-: decreased, Pco2: decreased
CpH: decreased, HCO3-: increased, Pco2: increased
DpH: increased, HCO3-: decreased, Pco2: decreased
EpH: normal, HCO3-: increased, Pco2: increased
A histological examination of the carotid body reveals glomus cells containing dense-core vesicles. These cells function primarily as chemoreceptors for which of the following?
APartial pressure of oxygen
BBlood pH
CTemperature
DBlood glucose levels
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