Final answer:
When a patient with acute congestive heart failure (CHD) exacerbation does not respond to diuretic treatment, further evaluation and diagnostic tests should be conducted to identify other potential causes. Medication review is also important to ensure optimal drug therapy.
Step-by-step explanation:
When a patient with acute congestive heart failure (CHD) exacerbation does not respond to diuretic treatment, the next step would be to evaluate for other potential causes of the exacerbation. This could include conducting further diagnostic tests such as echocardiography, cardiac catheterization, or coronary angiography to assess the underlying cardiac function and identify any potential blockages or structural abnormalities. Additionally, the patient's medication regimen should be reviewed to ensure optimal drug therapy.