Cell-mediated immunity is NOT usually associated with what condition:

Correct Answer: B

Rationale: Cell-mediated immunity is a type of immune response that involves the activation of cytotoxic T cells and other immune cells to directly target and destroy infected or abnormal cells. It does not involve the production of antibodies, which are the primary component of humoral immunity. Antibodies are produced by B cells and are responsible for targeting extracellular pathogens such as bacteria and viruses. In contrast, cell-mediated immunity is more focused on targeting intracellular pathogens, cancerous cells, and other cells that have been compromised. So, production of antibodies is not usually associated with cell-mediated immunity.

Correct Answer: C

Rationale: Acute appendicitis is the most likely cause of the symptoms described in the pregnant woman. The classic presentation of acute appendicitis includes fever, chills, abdominal pain localized to the right lower quadrant, rebound tenderness, and guarding. Pregnant women are at a slightly higher risk of developing appendicitis due to anatomic changes and increased abdominal pressure during pregnancy, which can lead to an atypical presentation of symptoms. Prompt diagnosis and surgical intervention are crucial to prevent complications such as perforation, which can be detrimental for both the mother and the fetus.

Correct Answer: A

Rationale: When a patient is in a somnolent status and still under the effect of anesthesia, the most appropriate position to place the patient is in a supine position with the head of the bed slightly elevated. This position helps prevent any obstruction of the airway and promotes optimal ventilation. Elevating the head of the bed ensures that the patient's airway remains clear and allows for proper breathing. Additionally, this position helps prevent aspiration and promotes proper circulation. Overall, the supine position with the head bed slightly elevated is the safest and most effective position for a patient in this condition.

Correct Answer: B

Rationale: Nitrous oxide, also known as "laughing gas," is a safe and effective pharmacological option for pain management during labor. Nitrous oxide is commonly used in labor and delivery settings as it has minimal effects on the baby and allows the woman to remain in control of her pain management. It provides quick pain relief when inhaled and can be adjusted to the woman's needs during labor. Ibuprofen, morphine, and diazepam are not typically used for pain management during labor due to their potential risks and side effects, especially for the baby.

Correct Answer: A

Rationale: Neonatal Opioid Withdrawal Syndrome (NOWS), previously known as Neonatal Abstinence Syndrome (NAS), can occur when a newborn is exposed to opioids in utero. Opioid exposure in utero can lead to physical dependence in the fetus, and when the drug is no longer available after birth, withdrawal symptoms can occur.

Correct Answer: A

Rationale: In this case, the patient is experiencing respiratory acidosis as indicated by the low pH (7.28), elevated PaCO2 (65 mmHg), and elevated HCO3- (30 mEq/L). The primary acid-base disturbance is respiratory acidosis due to the retention of carbon dioxide (PaCO2 >45 mmHg) leading to an increase in HCO3- as a compensatory mechanism to maintain pH within normal limits. The elevated HCO3- levels (metabolic compensation) are trying to counterbalance the increased PaCO2 levels (respiratory acidosis) by increasing bicarbonate to attempt to normalize the pH. Overall, the ABG analysis shows respiratory acidosis with metabolic compensation in this COPD patient with an acute exacerbation and severe dyspnea.

Correct Answer: B

Rationale: The Epidemiologic Triad model focuses on identifying the causative factors of diseases, particularly infectious diseases. The three components of the triad are the external agent, the susceptible host, and the environment. These factors interact to result in the occurrence of disease. Treatment Regimen, on the other hand, is not one of the causative factors but rather a response to manage and treat the disease once it has occurred. While treatment is essential, it is not part of the factors that contribute to the initial development of the disease within the Epidemiologic Triad model.

Correct Answer: D

Rationale: In the scenario described, with the patient having an acute exacerbation of chronic kidney disease (CKD) leading to hyperkalemia and metabolic acidosis, the priority intervention to manage the metabolic derangements is to perform emergent hemodialysis for potassium removal. Hemodialysis is the most effective and rapid method to lower dangerously high potassium levels in the blood. It is crucial in cases of severe hyperkalemia where other measures such as medications or dietary modifications may not be sufficient or fast enough to correct the elevated potassium levels. Additionally, hemodialysis can also help in improving metabolic acidosis by removing waste products and excess electrolytes from the blood. Overall, emergent hemodialysis is the most appropriate intervention for managing the acute metabolic abnormalities in this critically ill patient.

Correct Answer: A

Rationale: Multiple myeloma is a type of cancer that develops in plasma cells, which are a type of white blood cells involved in the body's immune response. As a result, multiple myeloma primarily affects the hematologic system, which includes the blood and blood-forming tissues. This cancer typically arises in the bone marrow and can lead to an overproduction of abnormal plasma cells, which can crowd out healthy blood cells. Symptoms of multiple myeloma can include anemia, bone pain, recurrent infections, fatigue, and kidney problems, all of which are related to the hematologic system.