This study is randomized clinical trial to verify the effect of nursing guidelines for patients undergoing left cardiac catheterization on an outpatient basis. Comparing three approaches to direct guidelines about the procedure:

• printed,
• digital video disc (DVD)
• conventional guidelines provide by nursing team

This study is randomized clinical trial to verify the effect of nursing guidelines for patients undergoing left cardiac catheterization on an outpatient basis. Comparing three approaches to direct guidelines about the procedure:

• guidelines printed, (GOI) with informative material
• guidelines through a digital video disc (GDVD) six minutes
• conventional guidelines provide by nursing team

Inclusion Criteria:

• Patients undergoing the procedure were included, with age equal or superior to 18 years

Exclusion Criteria:

• patients who had already undergone previous procedures similar severe comorbidities, illiterate and who came to the facility to urgently