The study was designed as a randomized controlled experimental study in order to compare the fasting blood glucose values measured by puncturing the fingertips and using the intravenous route of patients diagnosed with diabetes mellitus, and to determine the effect on patient satisfaction. The blood glucose measurement via the intravenous catheter has an effect on increasing the comfort of the patient compared to the fingertip measurement. It is thought that information can be provided to increase patient satisfaction.

Inclusion Criteria:

• 18 years and older
• No advanced hearing and vision problems
• Able to speak and understand Turkish
• Easy to communicate
• literate
• Agreeing to participate in the research voluntarily
• Patients who are hospitalized
• Regular finger blood sugar monitoring,
• Patients with an intravenous vascular access date within the first 24 hours
• Patients who had been diagnosed with Type 2 Diabetes Mellitus for at least one year were.

Exclusion Criteria:

• Those who are treated with sedative drugs
• Patients using antipsychotic medication
• Patients with continuous drug infusion through the intravenous line
• Patients whose intravenous vascular access date has passed 24 hours
• Patients in unconscious, confused, apathetic state

Single (Participant) Identity information of the patients was concealed and verbal and written consents were obtained.