A patient who is positive for the human immunodeficiency virus (HIV) arrives at the clinic with a severe opportunistic infection. The patient’s CD4 count is 186 cells/mm3. What is the best interpretation of this lab finding?

Which of the following scenarios is most consistent with active immunity?

A pregnant mother tests positive for hepatitis B. During the pregnancy, hepatitis B crosses the placental barrier and causes an infection in the baby. This is an example of:

This is not a true cell, but rather a cellular fragment that is used in the creation of blood clots.

A 58-year-old patient is diagnosed with stage II colon cancer. The health care team discusses several possible cancer treatment options. Which treatment approach works primary by stimulating the patient’s own B or T cells to recognize and destroy the cancer cells?

Which patient has an increased cancer risk specifically related to a persistent viral infection?

A patient with a severe peanut allergy accidentally consumes a peanut. Which cellular response contributes most directly to the rapid development of airway swelling and difficulty breathing?

Match the infection on the left with the cancer it may cause on the right.

A 76-year-old male bed-bound patient develops a pressure ulcer over his left heel. There is some visible yellow adipose tissue, but the ulcer is predominately covered by a necrotic eschar (see image). Which stage best describes this pressure ulcer?

Interpret the following arterial blood gas (ABG): pH:  7.37, PaCO2: 39, HCO3: 23