A 69 year old edentulous alcoholic male who lives alone is admitted to the hospital for evaluation of a shoulder wound that is not healing well. On physical examination, numerous ecchymoses are noted on the posterior aspect of his legs and thighs. Careful examination of the man’s skin reveals minute hemorrhages around hair follicles and splinter hemorrhages in the nail beds. Laboratory examination is remarkable for a hemoglobin of 10 (normal 14-18 g/dL); no other hematologic abnormalities are noted. Therapy should consist of ?

**Core Concept**
The patient's presentation is indicative of a bleeding disorder, characterized by easy bruising, petechiae, and splinter hemorrhages, with laboratory findings of anemia and low hemoglobin levels. This condition is often associated with a deficiency in vitamin K-dependent clotting factors, which are essential for the coagulation cascade.

**Why the Correct Answer is Right**
The patient's symptoms and laboratory findings are consistent with a diagnosis of vitamin K deficiency bleeding (VKDB). This condition is often seen in individuals with malnutrition, particularly those with inadequate dietary intake of vitamin K or those with impaired absorption, such as the patient with an edentulous condition. Vitamin K is necessary for the synthesis of clotting factors II, VII, IX, and X, which are essential for the coagulation cascade. A deficiency in these clotting factors leads to impaired coagulation and bleeding manifestations.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because warfarin therapy is typically used to prevent thrombosis by inhibiting vitamin K-dependent clotting factors. However, in this case, the patient's bleeding manifestations suggest a deficiency in vitamin K-dependent clotting factors, not an excess.

**Option B:** This option is incorrect because vitamin C deficiency (scurvy) can also cause bleeding manifestations, but it is not the most likely diagnosis in this case. Vitamin C deficiency would also be expected to cause other symptoms, such as fatigue, malaise, and poor wound healing.

**Option C:** This option is incorrect because platelet disorders, such as thrombocytopenia or thrombocytopathy, can also cause bleeding manifestations. However, the patient's laboratory findings are not consistent with a platelet disorder, and the presence of petechiae and splinter hemorrhages suggests a coagulation disorder.

**Option D:** This option is incorrect because liver disease can also cause bleeding manifestations due to impaired synthesis of clotting factors. However, the patient's laboratory findings are not consistent with liver disease, and the presence of petechiae and splinter hemorrhages suggests a vitamin K deficiency.

**Clinical Pearl / High-Yield Fact**
In patients with bleeding manifestations, it is essential to consider a coagulation disorder, particularly vitamin K deficiency bleeding, especially in individuals with malnutrition or impaired absorption. A high index of suspicion and prompt diagnosis can guide appropriate therapy and prevent further complications.

**Correct Answer:** B. Vitamin C supplementation

✓ Correct Answer: D. Administration of vitamin C