title:
<h2 align=center>Disturbed Hemodynamics</h2>
<p>Practice your knowledge of the concepts raised in the small group discussions and lectures dealing wth <b>hemodynamics</b> in these clinical scenarios.  
<br>In the multiple choice answers click on whichever answer you feel is the best or most appropriate answer.  This quiz has been set up to provide you with a series of questions pertaining to a clinical scenario. Each clinical scenario has one to three questions and in most cases images of the normal tissue or organ has been included for comparison to the pathological sample.  Complete the questions for each scenario before proceeding on to the next.

<p><hr size=2>
header:
<h3 align="center">Thrombosis/Embolism</h3>
footer:
[ <a href="http://www.uwo.ca/cgi-bin/geniq/pathol/MedsI/quizzes/hemodynamics/fluids5.iq">Next clinical scenario</a> ] 
<p><address>Please e-mail feedback to <a href="mailto:bgarcia@uwo.ca">The Meds I Pathology Course Coordinator</a></address>

delivery:
simultaneous



question:
A 60-year-old woman underwent an orthopedic surgery for total hip replacement. On the sixth day of her recovery, she developed pain, tenderness and swelling of her left leg. On examination, the peripheral arterial pulses were normal. <br>
Which of the following best explains the presence of these symptoms?
ans:
Venous thrombosis.
fbk:
Correct, all the symptoms in this case are classical for deep vein thrombosis of the leg. It is caused by reduced physical activity, reduced venous return, vascular injury and reduced t-PA activity.
ans:
Ischemia.
fbk:
Incorrect, results as a consequence of arterial occlusion or narrowing. The symptoms include painful, pulseless leg if acute and, if chronic, leads to atrophy of the affected area.
ans:
Lymphatic obstruction.
fbk:
Incorrect, is caused by impaired lymph drainage, mostly in carcinomas or infection of the lymph nodes.
ans:
Disseminated intravascular coagulation.
fbk:
Incorrect, DIC is sudden onset of widespread fibrin thrombi in the microcirculation. It is a potential complication associated with systemic activation of thrombin.
ans:
Gangrene.
fbk:
Incorrect, refers to ischemic necrosis of a limb most commonly. Not evident in this case.
correct_answer:
1
<p>

question:
What is the most life-threatening complication associated with this condition?
ans:
Renal infarction.
fbk:
Incorrect, renal infarction is caused by occlusion of renal artery or its branches. 
ans:
Ulceration of the leg.
fbk:
Incorrect, mostly associated with superficial venous thrombosis, also known as varicose veins.
ans:
Popliteal artery occlusion. 
fbk:
Incorrect, not associated with deep vein thrombi.
ans: 
Pulmonary artery embolism.
fbk:
Correct, the most common cause of pulmonary artery embolism is deep vein thrombosis of the leg and can be life-threatening if massive.
ans:
Coronary artery thromboembolism.
fbk:
Incorrect, it signifies impaired arterial circulation not venous.
correct_answer:
4

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