140) A 15 year old boy with history of Cystic Fibrosis presents to the Emergency room with complaints of severe right lower quadrant abdominal pain. He also gives a history of nausea and vomiting for the past 8 hours. On examination, his temperature is 102F and he has right lower quadrant tenderness at McBurney’s Point. CT scan of the abdomen revealed calcified appendicolith within the dilated, fluid-filled appendix and infiltration of the surrounding retroperitoneal fat. The patient is scheduled for Appendicectomy. However, pre-operative labs reveal an abnormal result that would put the patient at an increased risk of bleeding from surgery. The patient is referred for medical clearance. Which of the following is most likely to be abnormal in this patient?
A) Platelet count
B) Prothrombin time
C) Partial Thromboplastin Time
D) Both Prothrombin time and Partial Thromboplastin time
E) Bleeding time
Filed under: USMLE Test Prep | Tagged: Archer hematology, Cystic Fibrosis, Hematology, Partial thromboplastin time, Prothrombin time, USMLE step 3 Hematology, usmle step 3 pediatrics, Vitamin K deficiency in Cystic Fibrosis |
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B.Prothrombin Time
b
pt+ptt d is the answer
insevere vit k deficiency we have abnormal ptt and pt
b
PT .we dont know how much severe it is.PT is specific for vit k def but both PT n PTT can be increased in other cnditions too
B
Need to be both PT and PTT to put the patient on risk.