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- Why might exercising on a very hot day result in fainting?While downhill skiing, Jerry lost control and appeared to hit into a tree, chest first. The ski patrol that are also certified in EMT reported that Jerry was found with his head cocked at a peculiar angle and it looked like he had a fracture at the position of the C2 vertebra. During triage, Jerry appeared cyanotic and apneic. His heart was still beating, but his pulse was fast and thready. b) What would be the best possible explanation for the cyanosis?If blood pressure was to drop, how is the signal transmitted to the central nervous system? a) The baroreceptors decrease the generation of action potentials below their normal level. b) The glassopharyngeal nerve increases the transmission of action potentials, while the vagus nerve does not. c) The baroreceptors increases the generation of action potentials past their normal level. d) The glassopharyngeal nerve decreases the transmission of action potentials, while the vagus nerve does not.
- Why is hypertension such a serious problem?If blood pressure suddenly drops (not more than 10 mmHg) which of these mechanisms will be activated to restore blood pressure a) CNS ischemia reflex b) baroreceptor reflexes c) chemoreflexesThere is reduced blood flow to tissues and organs in cardiogenic shock. What is the main cause of this reduced blood flow? Question 4 options: a) A decrease in systemic vascular resistance b) A reduction in preload c) A reduction in cardiac output d) The loss of sympathetic tone
- In which of the following organs would you find oxygen levels causing vasoconstriction? A) lung b) liver d) kidneyWhy does pericarditis develop?Mr. John Doe, a 72-year-old male with a long-standing history of chronic heart failure attributed to ischemic heart disease, was brought to the emergency department by his family due to increasing episodes of shortness of breath, especially at night, and swelling in his legs over the past week. Mr. Doe has been managing his condition with a regimen of ACE inhibitors, beta-blockers, and loop diuretics. Despite his adherence to medication, he has experienced gradual weight gain and decreased urine output in the days leading up to his presentation. His medical history is also significant for type 2 diabetes mellitus, controlled with oral hypoglycemics, and hypertension. On physical examination, Mr. Doe appeared visibly distressed, with labored breathing at rest, using accessory muscles. His blood pressure was noted to be 160/90 mmHg, with a heart rate of 98 beats per minute, respiratory rate of 26 breaths per minute, and oxygen saturation of 89% on room air. Bilateral pitting edema was…