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Shock and Fluid Resuscitation Flashcards

6 cards from real TNCC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Shock and Fluid Resuscitation flashcards as text

  1. The base deficit on an arterial blood gas is a useful marker in trauma because it indicates:

    Answer: The severity of tissue oxygen debt and anaerobic metabolism

    Base deficit reflects the degree of metabolic acidosis from tissue hypoperfusion and anaerobic metabolism, serving as a surrogate marker for the severity and duration of shock.

  2. Which vasopressor is preferred as a first-line agent for trauma patients who remain hypotensive despite adequate volume resuscitation?

    Answer: Norepinephrine

    Norepinephrine is the preferred first-line vasopressor in trauma-related shock (after adequate volume resuscitation) due to its balanced alpha-1 and beta-1 effects, providing vasoconstriction and inotropy.

  3. A patient with Class III hemorrhagic shock (30-40% blood volume loss) would be expected to present with which combination of findings?

    Answer: Tachycardia 120-140, hypotension, tachypnea 30-40, confused and anxious

    Class III hemorrhage (1,500-2,000 mL, 30-40% blood volume) presents with significant tachycardia, the first measurable drop in systolic blood pressure, marked tachypnea, and confusion.

  4. Point-of-care viscoelastic testing (TEG/ROTEM) during trauma resuscitation is used to:

    Answer: Guide goal-directed component therapy by assessing clot formation, strength, and breakdown in real-time

    TEG (thromboelastography) and ROTEM (rotational thromboelastometry) provide real-time viscoelastic analysis of clot formation, strength, and fibrinolysis, enabling targeted blood component therapy.

  5. Hypothermia in trauma patients worsens hemorrhage primarily by:

    Answer: Impairing coagulation enzyme function and platelet aggregation

    Hypothermia impairs the enzymatic reactions of the coagulation cascade and reduces platelet adhesion and aggregation, significantly worsening hemorrhage.

  6. Damage control resuscitation in trauma includes all of the following EXCEPT:

    Answer: Targeting a normal blood pressure of 120/80 mmHg before surgery

    Damage control resuscitation intentionally accepts a lower-than-normal blood pressure (permissive hypotension with SBP 80-90 mmHg) until surgical hemorrhage control is achieved, rather than targeting normotension.