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BOOK4-CH4Hemorrhageandshock - Volume 4 Chapter 4 1 Which of...

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Volume 4 Chapter 4 1. Which of the following mechanisms is responsible for accumulating lactic acid in shock? a. Gluconeogenesis b. Hemostasis c. Anaerobic metabolism d. The citric acid cycle 2. Which of the following substances has the most rapid effect when compensating for hemorrhage? a. Catecholamines b. Angiotensin 2 c. Glucocorticoids d. Antidiuretic hormone 3. Which layer of the arteries controls the diameter of the vessel? a. Tunica externa b. Tunica media c. Tunica intima d. Tunica adventitia 4. Which of the following types of wound facilitates the effectiveness of normal blood-clotting mechanisms? a. Crushing injuries b. Transverse laceration of the vessel c. Vessels torn by stretching, such as when a limb is caught in farm mechanism d. Longitudinal laceration of the vessel 5. Your patient is a 29-year old male who works in a meat-processing plant. He received a knife wound in the proximal antero-medial thigh, which is continuing to bleed on your arrival. He is restless, thirsty, and has pale, cool skin. He has a weak radial pulse of 130 and a blood pressure of 118/88. this patient is exhibiting signs and symptoms consistent with stage _____ hemorrhage. a. 1 b. 2 c. 3 d. 4 6. Your patient is an obese 39-year old woman involved in a lateral-impact motor vehicle collision. Which of the following should you remember when assessing and treating this patient? a. Relative to body weight, a smaller amount of hemorrhage may result in shock.
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7. Which of the following is true of the elderly trauma patient? a. Medications like beta blockers may interfere with normal compensatory mechanisms b. Hemorrhage may not result in tachycardia as expected c. The elderly trauma pt is more likely to experience myocardial ischemia as a result of hemorrhage d. All of the above are true 8. When cells become hypoxic and the amount of carbon dioxide in them increases, reducing tissue pH, which of the following occurs to restore homeostasis? a. The sympathetic nervous systems constricts the capillary sphincters to prevent washout of the accumulated lactic acid b. Mast cells release histamine, resulting in dilation of capillary sphincters and an increase in tissue perfusion. c. The precapillary sphincters remain closed so that increased hydrostatic pressure forces lactic acid into the interstitial fluid, where it is buffered d. Mast cells release serotonin, resulting in dilation of the capillary sphincters and an increase in tissue perfusion. 9.
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BOOK4-CH4Hemorrhageandshock - Volume 4 Chapter 4 1 Which of...

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