Active Learning Flashcards
5 cards from real UWorld practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 5 Active Learning flashcards as text
A 25-year-old female presents with fatigue, pallor, and glossitis. Laboratory tests reveal hemoglobin of 8.5 g/dL, mean corpuscular volume (MCV) of 105 fL, and hypersegmented neutrophils on a peripheral smear. Which of the following is the most likely diagnosis?
Answer: Vitamin B12 deficiency
The patient's symptoms (fatigue, pallor, glossitis) combined with laboratory findings of anemia (low hemoglobin), macrocytosis (high MCV of 105 fL), and hypersegmented neutrophils on a peripheral smear are classic indicators of megaloblastic anemia. This type of anemia is most commonly caused by a deficiency in vitamin B12 or folate. Given the options, Vitamin B12 deficiency is the most fitting diagnosis.
A nurse is preparing to administer an intravenous (IV) antibiotic to a patient. Which of the following steps is the most appropriate to prevent medication errors?
Answer: Asking the patient about their known allergies before administration
Before administering any medication, especially an intravenous antibiotic, verifying the patient's known allergies is a crucial step to prevent severe adverse drug reactions. This aligns with the 'rights of medication administration' and ensures patient safety by avoiding potentially life-threatening allergic responses. While other steps like verifying the label are important, directly confirming allergies with the patient is a unique and essential safety check.
Read the passage below and answer the question that follows: "The innovations of the 21st century have undoubtedly improved communication. However, they have also fostered a reliance on technology that may impede face-to-face social interactions." Which statement best supports the author’s argument?
Answer: Studies show a decline in conversational skills among frequent technology users.
The author argues that technology, despite improving communication, 'may impede face-to-face social interactions.' The statement 'Studies show a decline in conversational skills among frequent technology users' directly supports this argument. It provides evidence that heavy technology use can negatively impact the very skills necessary for effective face-to-face interaction, thus demonstrating how technology could impede such interactions.
A rectangular room has a length of 12 meters and a width of 9 meters. If the room's floor is to be tiled, and each tile covers an area of 0.36 square meters, how many tiles are needed?
Answer: 300
First, calculate the total area of the rectangular room: Area = length × width = 12 meters × 9 meters = 108 square meters. Next, divide the total room area by the area covered by each tile to determine the number of tiles needed. Number of tiles = 108 m² / 0.36 m²/tile = 300 tiles.
A farmer has 10 cows, 5 chickens, and 3 goats. If he sells 40% of his cows, how many cows does he have left?
Answer: 6
The farmer initially has 10 cows. He sells 40% of his cows. To find out how many cows he sold, calculate 40% of 10: 0.40 × 10 = 4 cows. To determine the number of cows he has left, subtract the number sold from the original number: 10 cows - 4 cows = 6 cows.