This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Graft survival in the initial 48 hours depends on 
Select and explain. 
A. Plasma imbibition, B. Ingrowth of capillaries, C. Development of lymphatics, D. Saline dressing
A: Plasma imbibition
Answer: A: Plasma imbibition 
Explanation: The grafts will survive transfer based on a defined sequence of events that culminates in vascular independence. These events are (1) Serum imbibition--direct absorption of nutrients from recipient capillary beds that generally takes place in the first 24 hours(2) Inosculation--the connecting of donor and recipient vessels that typically begins in the 24 to 72hour period(3) Angiogenesis--vascular ingrowth of vessels from the recipient bed into the graft that stas after 72 hours. Factors that interrupt this process--such as fluid collection under the graft or mechanical shear forces--will compromise the graft take