A 5-year-old boy is brought to urgent care and seen by a PNP because of the new onset of a fine, dark, pinpoint rash most prominent on his lower legs. He was last seen 2 weeks ago for an uncomplicated viral upper respiratory infection. He has no other symptoms besides the rash. The PNP observes a petechial rash and several healing bruises. CBC results: WBC: 6.5 (normal) Hgb: 13.0 (normal) Hct: 38% (normal) Platelets: 50,000 (low) MCV: 84 (normal) WBC differential: normal The PNP knows the most likely physiological cause of the boy’s rash is:

What is the average lifespan of a mature erythrocyte in circulation?

The AGNP has an 82‑year‑old patient with diabetes, heart disease, depression, and a history of prostate cancer who has a normocytic anemia with a hemoglobin of 9.6. His recent colonoscopy was normal, his stools are negative for blood, and his diet is nutritionally adequate. He has had no change in weight. His anemia is likely related to:

The AGNP is rounding in a long-term care unit & assesses multiple patients with low Hgb. Which of the patients with anemia would most benefit from hematopoietic growth factors, such as erythropoietin?

The NP is seeing a patient with cancer who has severe anasarca. Which of the following is critical to colloid oncotic pressure?

A person arrives in the clinic reporting 4 days of nausea, vomiting, and diarrhea. The hematocrit is extremely high, at 61%. The NP suspects:

The school nurse knows several children with hemophilia A. After recess, one student with hemophilia comes to the school nurse complaining of pain in his knee from falling on the playground. The nurse notes there is swelling in the knee and pain on palpation.  The nurse should:

An electron (m = 9.11 x 10-31 kg, q= -1.6 x 10-19 C) moves at 4 x 105 m/s parallel to an electric field of  5.7 x 10-6 N/C in the positive x-direction.  What distance has the electron moved after 0.1 seconds?    

An electron (m = 9.11 x 10-31 kg, q= -1.6 x 10-19 C) moves at 3 x 105 m/s parallel to an electric field of  5.7 x 10-6 N/C in the positive x-direction.  What distance has the electron moved after 0.1 seconds?    

Consider a logic circuit where A = 1 and B = 0. If these are passed through a NAND gate, what is the output F?