. A patient with active gastrointestinal bleeding is being monitored for complications. Which of the following signs indicates the patient is developing hypovolemic shock?
Elevated blood pressure
warm, flushed skin
Increased urine output
Increased heart rate
The Correct Answer is D
A. Elevated blood pressure. Blood pressure typically drops in hypovolemic shock as blood volume decreases.
B. Warm, flushed skin. As hypovolemic shock progresses, skin becomes cool and clammy due to decreased blood flow and compensatory vasoconstriction.
C. Increased urine output. Hypovolemic shock leads to decreased urine output due to reduced renal perfusion.
D. Increased heart rate. An increased heart rate is an early compensatory response in hypovolemic shock as the body attempts to maintain cardiac output.
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Correct Answer is B
Explanation
A. Interferon Gamma Release Assays (IGRAs): IGRAs are useful for detecting TB infection but do not confirm active TB disease. They measure the immune response to TB bacteria but don’t differentiate between latent and active infection.
B. Sputum culture: Sputum culture is the gold standard for confirming active TB because it identifies Mycobacterium tuberculosis bacteria directly, confirming active infection.
C. Tuberculin Skin Test (TST): The TST can indicate TB infection but cannot distinguish between latent and active TB, making it unsuitable as a confirmatory test for active disease.
D. Chest X-ray: A chest X-ray can show signs suggestive of TB but cannot confirm the presence of TB bacteria, so it is not definitive for diagnosing active TB.
Correct Answer is D
Explanation
A. Pain in the neck when the patient flexes their head towards the chest. This describes nuchal rigidity, not Kernig sign.
B. Involuntary flexion of the hips and knees when the neck is flexed. This describes Brudzinski sign, not Kernig sign.
C. Photophobia and headache triggered by bright light. These are symptoms of meningitis, but they are not specific to Kernig sign.
D. Pain and resistance when attempting to extend the patient's leg from a flexed position. A positive Kernig sign is when there is pain and resistance to leg extension from a flexed hip and knee position, indicating meningeal irritation.