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In-depth breakdown of core ABSITE concepts for 2025
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Surgical competency checklists to track your progress
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Operative techniques with step-by-step guidance
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Comprehensive practice exam to simulate the real test
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Ideal for general surgery residents seeking top scores
Preview
After suspecting an air embolus during a laparoscopic colon resection, you place the patient L
side down in Trendelenburg. This prevents the air from entering:
a.) Right atrium
b.) Right ventricle
c.) Left atrium
d.) Pulmonary artery
e.) IVC – -CORRECT ANS- -(c)
The goal of Trendelenburg + L-side down is to capture air in the RV/RA. A central line can then
be placed to remove the air before it gets to the left side and spread to the brain/systemic
system
In ITP (idiopathic thrombocytopenic purpura):
a.) Treatment with corticosteroids should precede splenectomy.
b.) Splenectomy should always be done in children.
c.) Preoperative platelet transfusion is useful.
d.) Bone marrow examination reveals decreased megakaryocytes.
e.) Splenectomy is rarely successful. – -CORRECT ANS- -(a)
Platelet destruction is immunologically mediated, many patients respond at least transiently
with an increase in platelet count and some will have a sustained remission when the steroids
are discontinued. Response to steroids is an excellent indicator of potential response to
splenectomy; the best response to splenectomy is obtained in those patients who respond to
corticosteroids with an increase in platelet count.
Mechanism of action of Cellcept (Mycophenolate mofetil)?
a.) Inhibit genes for cytokine synthesis (IL-6)
b.) Binds cyclophilin
c.) Polyclonal antibody directed at T cells
d.) Monoclonal antibody inhibiting CD3/T-cell receptor complex
e.) Inhibits denovo purine synthesis – -CORRECT ANS- -(e)
Reversible inhibitor of inosine monophosphate dehydrogenase (IMPDH) in purine biosynthesis
What is type I error? – -CORRECT ANS- -Type I error: incorrectly rejecting the the null hypothesis:
saying a difference exists when the null hypothesis is true (no difference actually exists.)
In medical research, type II statistical error can be minimized by:
a.) Increasing the sample size
b.) Decrease the power of a statistical method
c.) Changing the confidence interval being tested
d.) Linear regression analysis
e.) Analysis of variance – -CORRECT ANS- -(a)
Type II error: Incorrectly accept the null hypothesis (saying no difference exists when a
difference actually does exist.)
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