Description yintang; a control point located 2 cm lateral from the lateral end of the right eyebrow
Experimental Description
Fifty patients were randomly assigned to group A to receive acupuncture for 15 minutes on the extra 1 point (yintang) or to group C, where they received the same treatment on a control point located 2 cm lateral to the end of the right eyebrow.
Sample Count
50
Control
Sham
Group C (Needling of a Control Point)(n=24)
Experiment
Group A (Needling of Extra 1 Point) (n=25)
Indicator
Verbal score scale(VSS)Bispectral index(BIS)
Induction Method
Electroacupuncture Instrument Model
Manufacturer
Frequency
Waveform
Strength
Induction Time
-
-
-
-
-
15 min
Acupuncture_Needle
Needle_Manufacturer
Needle_Depth
-
-
-
Description Patients in group A (n= 25) received acupuncture for 15 minutes on extra 1 point (yintang), located midway between the eyebrows, whereas patients in the C group (n = 24) received acupuncture for 15 minutes on a control point located 2 cm lateral from the lateral end of the right eyebrow.
Anesthesia Method
AA
Clinical Trial Type
random
Contraindications
Exclusion criteria were systematic or occasional use of sedatives, opioids, β-blockers or other similar drugs
Effector
BIS values were significantly decreased during acupuncture when applied on the extra 1 point (p=0.0001) but not on the control point. Acupuncture application significantly decreased the VSS values within the A group (p=0.027) and in the C group (p=0.0001), when compared to the baseline (pre-acupuncture) VSS values. However, no differences were found between the two groups regarding BIS or VSS values. In conclusion, needling the extra 1 point preoperatively significantly decreases the BIS values and the VSS for anxiety but needling of a control point decrease only VSS values.
Needling of the extra 1 point decreases BIS values and preoperative anxiety.
Abstract
Acupuncture has anxiolytic effects. We investigated the effect of acupuncture on the Bispectral Index (BIS) values and anxiety. Fifty patients were randomly assigned to group A to receive acupuncture for 15 minutes on the extra 1 point (yintang) or to group C, where they received the same treatment on a control point located 2 cm lateral to the end of the right eyebrow. BIS values were recorded before acupuncture; during acupuncture every 30 seconds for 15 minutes and every 30 seconds for 90 seconds when the acupuncture treatment was accomplished. Anxiety level was assessed before and after acupuncture by a verbal score scale (VSS) (0 = no anxiety, 10 = worst anxiety). BIS values were significantly decreased during acupuncture when applied on the extra 1 point (p = 0.0001) but not on the control point. Acupuncture application significantly decreased the VSS values within the A group (p = 0.027) and in the C group (p = 0.0001), when compared to the baseline (pre-acupuncture) VSS values. However, no differences were found between the two groups regarding BIS or VSS values. In conclusion, needling the extra 1 point preoperatively significantly decreases the BIS values and the VSS for anxiety but needling of a control point decrease only VSS values."
Souce
Am J Chin Med. 2004;32(5):789-94. doi: 10.1142/S0192415X04002363.
