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Types of Shock in Anatomy & Physiology

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Terms in this set (20)

  • What is hypovolemic shock?

    Hypovolemic shock is a condition caused by a significant loss of blood or fluids, leading to decreased blood volume and inadequate tissue perfusion.

  • What causes hypovolemic shock?

    Causes include severe bleeding, dehydration, burns, or fluid loss from vomiting or diarrhea.

  • What is cardiogenic shock?

    Cardiogenic shock occurs when the heart fails to pump effectively, reducing cardiac output and causing poor tissue perfusion.

  • What are common causes of cardiogenic shock?

    Common causes include myocardial infarction, heart failure, arrhythmias, or cardiomyopathy.

  • Define distributive shock.

    Distributive shock is characterized by abnormal blood vessel dilation, causing blood to pool and reducing effective blood flow to tissues.

  • What are types of distributive shock?

    Types include septic shock, anaphylactic shock, and neurogenic shock.

  • What causes obstructive shock?

    Obstructive shock results from a physical obstruction of blood flow in the heart or great vessels, impairing circulation.

  • Give examples of causes of obstructive shock.

    Examples include pulmonary embolism, cardiac tamponade, and tension pneumothorax.

  • How does hypovolemic shock affect blood pressure?

    It causes a drop in blood pressure due to decreased blood volume and reduced venous return.

  • What is the primary problem in cardiogenic shock?

    The heart's inability to pump sufficient blood to meet the body's needs.

  • How does distributive shock affect vascular resistance?

    It causes a decrease in systemic vascular resistance due to widespread vasodilation.

  • What is a key clinical sign of obstructive shock?

    Signs include jugular venous distension and hypotension despite normal blood volume.

  • Why does septic shock fall under distributive shock?

    Because it causes vasodilation and increased capillary permeability leading to poor tissue perfusion.

  • What role does fluid replacement play in hypovolemic shock treatment?

    It restores circulating blood volume to improve tissue perfusion and blood pressure.

  • How is cardiogenic shock typically managed?

    Management includes improving heart function with medications, mechanical support, or revascularization.

  • What distinguishes neurogenic shock from other distributive shocks?

    It results from spinal cord injury causing loss of sympathetic tone and vasodilation.

  • What is the effect of tension pneumothorax in obstructive shock?

    It compresses the heart and great vessels, obstructing blood flow and reducing cardiac output.

  • How does anaphylactic shock cause distributive shock?

    Through massive histamine release causing vasodilation and increased vascular permeability.

  • What is the common outcome if shock is untreated?

    Progression to organ failure and potentially death due to inadequate tissue oxygenation.

  • What is the main difference between hypovolemic and cardiogenic shock?

    Hypovolemic shock is due to low blood volume; cardiogenic shock is due to heart pump failure.