UNDERSTANDING PATHOPHYSIOLOGY
CANADIAN EDITION CHAPTER 42 FINAL PAPER
SOLVED QUESTIONS WITH COMPLETE
ANSWERS
◉ Why do varicose veins typically involve the saphenous veins of the
leg?
Answer: This is due to either trauma of the saphenous veins that
damages one or more valves or gradual distention caused by the
action of gravity on blood in the legs.
◉ What do varicose veins and valvular incompetence progress to?
Answer: Chronic venous insufficiency
◉ Chronic venous insufficiency
Answer: inadequate venous return over a long period of time that
often causes hyper pigmentation of the skin in the lower extremities.
◉ Venous stasis ulcer
Answer: ulcer caused by venous insufficiency and stasis of venous
blood; usually forms near the ankle.
, ◉ Why do venous stasis ulcers occur?
Answer: Infection can occur because poor circulation impairs the
delivery of the cells and biochemicals that are necessary for the
immune and inflammatory responses.
◉ Thrombus
Answer: blood clot that remains attached to a vessel wall
◉ Why are venous thrombi more common than arterial thrombi?
Answer: Because flow and pressure are lower in the veins than in
the arteries
◉ Deep Vain Thrombosis
Answer: A blood clot in a deep vein, most often an extremity
◉ What are the three factors that promote venous thrombosis?
Answer: 1) Venous stasis (immobility, age, congestive heart failure)
2) Venous endothelial damage (trauma, intravenous drug use)
3) Hyperocagbualbe states (inherited disorders, malignancy,
pregnancy)
◉ Superior Vena Cava Syndrome
CANADIAN EDITION CHAPTER 42 FINAL PAPER
SOLVED QUESTIONS WITH COMPLETE
ANSWERS
◉ Why do varicose veins typically involve the saphenous veins of the
leg?
Answer: This is due to either trauma of the saphenous veins that
damages one or more valves or gradual distention caused by the
action of gravity on blood in the legs.
◉ What do varicose veins and valvular incompetence progress to?
Answer: Chronic venous insufficiency
◉ Chronic venous insufficiency
Answer: inadequate venous return over a long period of time that
often causes hyper pigmentation of the skin in the lower extremities.
◉ Venous stasis ulcer
Answer: ulcer caused by venous insufficiency and stasis of venous
blood; usually forms near the ankle.
, ◉ Why do venous stasis ulcers occur?
Answer: Infection can occur because poor circulation impairs the
delivery of the cells and biochemicals that are necessary for the
immune and inflammatory responses.
◉ Thrombus
Answer: blood clot that remains attached to a vessel wall
◉ Why are venous thrombi more common than arterial thrombi?
Answer: Because flow and pressure are lower in the veins than in
the arteries
◉ Deep Vain Thrombosis
Answer: A blood clot in a deep vein, most often an extremity
◉ What are the three factors that promote venous thrombosis?
Answer: 1) Venous stasis (immobility, age, congestive heart failure)
2) Venous endothelial damage (trauma, intravenous drug use)
3) Hyperocagbualbe states (inherited disorders, malignancy,
pregnancy)
◉ Superior Vena Cava Syndrome
