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Title: A middle-aged male walks into the emergency department complaining of chest pain radiating to the ... Post by: GermanBiter14 on Feb 12, 2018 A middle-aged male walks into the emergency department complaining of chest pain radiating to the neck, shortness of breath, and nausea.
His heart rate is 120 and BP is 94/60. The ED physician recognizes the patient is having an acute MI with decreased cardiac output. The nurse identifies the nausea to be in response to A) the patient not having a very high pain tolerance. B) hypoxia exerting a direct effect on the chemoreceptor trigger zone. C) the patient not having digested his meal completely. D) fear of having to make major lifestyle changes. Title: A middle-aged male walks into the emergency department complaining of chest pain radiating to the ... Post by: scott123 on Feb 12, 2018 Ans:
B Feedback: Hypoxia exerts a direct effect on the vomiting center (chemoreceptor trigger zone), producing nausea and vomiting. This direct effect probably accounts for the vomiting that occurs during periods of decreased cardiac output, shock, and environmental hypoxia. We are given no information about the patient's pain tolerance, when he last had a meal, or his routine lifestyle. This patient is going into shock (rapid pulse, low BP) that can result in shunting of blood away from the gut and other organs. During shock, the priority organs for oxygenation include the heart, brain, lungs, and kidneys. |