Sham acupressure will be applied to three points parallel to HT7, LI4 and PC6, approximately 1-1.5 cm away from the meridians. To prepare the points for acupressure, these points will be rubbed for approximately 20-30 seconds without applying direct pressure, reducing tissue sensitivity. The researcher will then apply acupressure to these points and symmetrical points using the thumb for three minutes, but will apply less pressure than required levels. Similar to the acupressure group, preparations and acupressure application will take approximately 20 minutes in total for each patient.

Patients in the control group will not receive any intervention and will receive routine treatment and care.

Acupressure will be applied to a total of three points, namely HT7, LI4, and PC6, determined by the researcher with a certificate according to literature and expert opinion before the CAG procedure for the acupressure group. The "cun" measurement unit will be used to determine the points where the application will be made. Before the application, after approximately 20-30 seconds of heating and rubbing without direct pressure on the acupressure points, the researcher will manually press the determined acupressure points with the thumb for 10 seconds to create a depth of 1-1.5 cm. Pressure will be applied to each acupressure point for three consecutive minutes (in the breathing rhythm) without lifting the finger, allowing for two seconds of relaxation. Since the symmetry of the three different points selected on the other extremity will also be applied, a total of 18 minutes of pressure will be applied to each point, with the condition of three minutes.

Acupressure will be applied to a total of three points: the 4th point of the Large Intestine Meridian (LI4-Hegu point) and the 6th point of the pericardial meridian (PC6- Nei Guan point), located three fingers above the wrist.

The State-Trait Anxiety Scale (STAI) is a scale developed by Spielberger et al. in 1970. The STAI determines how an individual feels at a certain moment and under a certain condition. The Turkish adaptation of the STAI was made by Öner and Le Compte in 1983 and the Cronbach alpha coefficient was reported as 0.94 (Öner and Le Compte, 1985). The STAI consists of 20 questions on a four-point Likert type. The statements in the STAI are evaluated as not at all 1 point, a little 2 points, a lot 3 points and completely 4 points. In this section, the statements are divided into direct and reversed. The scale score varies between 20-80 and an increase in the score obtained from the scale indicates an increase in the anxiety level. A score of 0-19 indicates no anxiety, a score of 20-39 indicates mild, a score of 40-59 indicates moderate and a score of 60-79 indicates severe anxiety. It is stated that those who score 60 points and above need professional help.

The scale is a 10 cm vertical or horizontal line on which patients mark their pain, with no pain written on one end and unbearable pain on the other. The distance between where the patient marks their pain and the no pain range is measured and recorded. The scale consists of five parts. Each of the sections is in the range of 2 points. '0' points - no pain, '1-2 points, very mild pain', '3-4 points, mild pain', '5-6 points, moderate pain', '7-8 points, severe pain' means '9-10 points, excruciating pain'.

Blood pressure monitoring will be used to evaluate the effects of acupressure, sham and control groups on physiological signs of pain and anxiety. Systolic and diastolic blood pressure measurements are performed by the researcher using the same manual sphygmomanometer instrument. Blood pressure is expressed in "mmHg".