Vitamin K deficiency
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Summary of Vitamin K deficiency
Vitamin K deficiency is a form of avitaminosis resulting from insufficient vitamin K1 or vitamin K2 or both. Symptoms include bruising, petechiae, hematomas, oozing of blood at surgical or puncture sites, stomach pains, risk of massive uncontrolled bleeding, cartilage calcification, and severe malformation of developing bone or deposition of insoluble calcium salts in the walls of arteries. In infants, it can cause some birth defects such as underdeveloped face, nose, bones, and fingers.
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Hematological system
Pathology
Anemias
Iron deficiency anemia
Alpha-thalassemia
Sideroblastic anemia
Anemia of chronic disease
Lead poisoning
Hemolytic disease of the newborn
Glucose-6-phosphate dehydrogenase (G6PD) deficiency
Autoimmune hemolytic anemia
Pyruvate kinase deficiency
Paroxysmal nocturnal hemoglobinuria
Sickle cell disease (NORD)
Hereditary spherocytosis
Anemia of chronic disease
Aplastic anemia
Fanconi anemia
Megaloblastic anemia
Folate (Vitamin B9) deficiency
Vitamin B12 deficiency
Fanconi anemia
Diamond-Blackfan anemia
Heme synthesis disorders
Coagulation disorders
Platelet disorders
Mixed platelet and coagulation disorders
Thrombosis syndromes (hypercoagulability)
Lymphomas
Leukemias
Leukemoid reaction
Dysplastic and proliferative disorders
Plasma cell dyscrasias
Hematological system pathology review
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Non-hemolytic normocytic anemia: Pathology review
Intrinsic hemolytic normocytic anemia: Pathology review
Extrinsic hemolytic normocytic anemia: Pathology review
Macrocytic anemia: Pathology review
Heme synthesis disorders: Pathology review
Coagulation disorders: Pathology review
Platelet disorders: Pathology review
Mixed platelet and coagulation disorders: Pathology review
Thrombosis syndromes (hypercoagulability): Pathology review
Lymphomas: Pathology review
Leukemias: Pathology review
Plasma cell disorders: Pathology review
Myeloproliferative disorders: Pathology review
AssessmentsVitamin K deficiency
Vitamin K deficiency
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Flashcards
Vitamin K deficiency
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Questions
USMLE® Step 1 style questions USMLE
1 questions
USMLE® Step 2 style questions USMLE
1 questions
Preview
A 21-day-old infant is brought to the emergency department because of lethargy. Mother says that she has been eating less for the past few days. This morning, the mother found her daughter difficult to arouse. Patient's birth was carried out at home and was a spontaneous vaginal delivery without complication. The mother refused immunizations for her child. The daughter's temperature is 35.8°C (96.44°F), pulse is 81/min, respirations are 25/min, and blood pressure is 71/46 mm Hg. Physical examination shows diffuse petechiae and bruising. Which of the following is the most likely diagnosis?
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