A clients family asks the nurse to explain the most common cause for treatment failure in pulmonary tuberculosis. The nurse knows that treatment failure is most often caused by the clients: 1....

A clients family asks the nurse to explain the most common cause for treatment failure in pulmonary tuberculosis. The nurse knows that treatment failure is most often caused by the clients:

1. Inability to pay for the medication.

2. Poor nutritional intake of complex proteins.

3. Inability or unwillingness to adhere to the therapeutic regimen.

4. Inability to restrict intake of calcium-enriched foods.