A high blood level of which substance causes hepatic coma?

Choice A reason: Idiopathic pulmonary fibrosis is a chronic, progressive lung disease characterized by scarring of the lung tissue. Tissue plasminogen activators (tPAs) are not used for this condition, as they are primarily designed to dissolve blood clots, not to address fibrotic changes in the lungs.

Choice B reason: Sarcoidosis is an inflammatory disease that affects multiple organs, particularly the lungs and lymph glands. It involves the growth of tiny collections of inflammatory cells called granulomas. Tissue plasminogen activators are not used in the treatment of sarcoidosis since the condition is not related to blood clots but rather to immune system dysregulation.

Choice C reason: Atelectasis is the complete or partial collapse of a lung or lobe of a lung due to alveoli deflation. The treatment typically focuses on re-expanding the lung tissue through techniques such as deep breathing exercises, bronchoscopy, or mechanical ventilation. Tissue plasminogen activators are not relevant for this condition, as they are used to dissolve blood clots, not to treat lung collapse.

Choice D reason: Pulmonary embolus (PE) is a blockage in one of the pulmonary arteries in the lungs, usually caused by blood clots that travel to the lungs from the legs or other parts of the body (deep vein thrombosis). Tissue plasminogen activators are used to treat PE because they can effectively dissolve the blood clots obstructing the pulmonary arteries, thereby restoring normal blood flow and preventing further complications.

Choice A reason: Checking the patient's temperature is important for assessing the severity of the pneumonia and monitoring for fever, but it is not the priority action before administering the first dose of vancomycin.

Choice B reason: Obtaining sputum cultures is the priority action because it allows for the identification of the causative organism and determination of its antibiotic susceptibility. This helps ensure that the prescribed antibiotic is appropriate for the patient's infection. Cultures should be obtained before starting antibiotic therapy to avoid interference with culture results.

Choice C reason: Checking the patient's blood pressure is important for overall patient assessment and monitoring, especially considering potential side effects of vancomycin. However, it is not the primary action needed before the first dose of the antibiotic.

Choice D reason: Drawing a blood specimen to evaluate the white blood cell count is useful for assessing the severity of the infection and the patient's immune response. However, this can be done after obtaining the sputum cultures and is not the immediate priority before administering the antibiotic.