A nurse is caring for a 55-year-old male client in an outpatient clinic.

Click to highlight the finding that requires immediate follow-up. To deselect a finding, click on the finding again.

A. Coughing up mucopurulent sputum
B. Joint pain
C. Anorexia
D. Night sweats
E. Purified protein derivative (PPD) test 11 mm
 

Choice A rationale

An INR (International Normalized Ratio) of 4.0 indicates that the client's blood is much thinner than the therapeutic range for most conditions (usually 2.0-3.0 for warfarin). This significantly increases the risk of bleeding. Vitamin K is the antidote for warfarin because it is essential for the synthesis of clotting factors (II, VII, IX, X) in the liver. Administering vitamin K reverses the anticoagulant effect of warfarin, reducing the risk of hemorrhage by promoting the production of functional clotting proteins.

Choice B rationale

Protamine sulfate is the antidote for heparin. It works by forming a stable ion pair with heparin, neutralizing its anticoagulant effects. It has no effect on the anticoagulant properties of warfarin, which acts by inhibiting vitamin K epoxide reductase, an enzyme crucial for the regeneration of active vitamin K necessary for clotting factor synthesis. Therefore, protamine is not indicated for warfarin overdose.

Choice C rationale

Calcium gluconate is used to treat hypocalcemia and magnesium toxicity. Calcium plays a vital role in numerous physiological processes, including bone health and muscle function, and is essential for blood coagulation. However, it does not directly counteract the effects of warfarin, which targets vitamin K-dependent clotting factors, and is not the appropriate antidote for an elevated INR.

Choice D rationale

Epinephrine is a potent vasoconstrictor and bronchodilator used in anaphylaxis, cardiac arrest, and severe asthma. It acts on alpha and beta-adrenergic receptors, leading to increased heart rate, blood pressure, and bronchodilation. It has no role in reversing the anticoagulant effects of warfarin and is not indicated for managing an elevated INR.

Choice A rationale: Persistent coughing with mucopurulent sputum suggests an ongoing respiratory infection or inflammation. Mucopurulent sputum indicates the presence of neutrophils and bacteria, often seen in bacterial pneumonia or tuberculosis. While significant, coughing alone is not an immediate life-threatening finding but rather a symptom requiring monitoring and further diagnostic follow-up to confirm the cause.

Choice B rationale: Joint pain in a patient receiving infliximab for rheumatoid arthritis may reflect an autoimmune flare or side effects of immunosuppression. Although uncomfortable and significant for quality of life, joint pain does not usually require immediate intervention compared to respiratory or infectious signs that may threaten life or transmission risk.

Choice C rationale: Anorexia, or decreased appetite, is a common systemic symptom in chronic infections like tuberculosis. It reflects the body’s inflammatory response and catabolic state but is a nonspecific finding. It requires addressing nutritional support but is not immediately life-threatening or requiring urgent intervention compared to active infectious disease signs.

Choice D rationale: Night sweats are a classic systemic symptom of tuberculosis caused by cytokine-mediated thermoregulatory dysfunction during infection. Although important in clinical suspicion, night sweats themselves do not necessitate immediate intervention but support the need for further diagnostic workup and infection control precautions.

Choice E rationale: An 11 mm induration on the purified protein derivative (PPD) test is considered positive in this patient due to immunosuppression with infliximab, which increases TB risk. The normal cutoff varies by risk factors, but 5 mm or greater is positive in immunosuppressed patients. This finding requires urgent follow-up to initiate treatment and prevent active disease and transmission, making it the most critical.