How to Standardize 3 Finger Positions of Examiner for Palpating Radial Pulses at Wrist in Traditional Chinese Medicine

Tyan, Chu Chang; Liang, Wen Miin; Shy, Haw Yaw; Kuo, Hsien Wen; Lin, Jaung Geng; Chen, Hung Wei; Chen, Jian Jung

doi:10.3727/036012907815844156

Cited by 12 publications

(6 citation statements)

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“…Exact locations of the three PLs vary with the patient's elbow-length. A clinical study on 200 adult subjects showed that the lengths of Chon , Gwan , and Cheok were approximately 6%, 6%, and 7% of the elbow-length, respectively, in accordance with ancient TEM records [36]. In particular, 6% of the elbow-length was approximately 1.54 cm for males and 1.4 cm for females due to differing elbow-lengths between male and female subjects.…”

Section: Methodssupporting

confidence: 52%

New Assessment Model of Pulse Depth Based on Sensor Displacement in Pulse Diagnostic Devices

Bae

Jeon

Kim

et al. 2013

Evidence-Based Complementary and Alternative Medicine

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An accurate assessment of the pulse depth in pulse diagnosis is vital to determine the floating and sunken pulse qualities (PQs), which are two of the four most basic PQs. In this work, we proposed a novel model of assessing the pulse depth based on sensor displacement (SD) normal to the skin surface and compared this model with two previous models which assessed the pulse depth using contact pressure (CP). In contrast to conventional stepwise CP variation tonometry, we applied a continuously evolving tonometric mechanism at a constant velocity and defined the pulse depth index as the optimal SD where the largest pulse amplitude was observed. By calculating the pulse depth index for 18 volunteers, we showed that the pulse was deepest at Cheok (significance level: P < 0.01), while no significant difference was found between Chon and Gwan. In contrast, the two CP-based models estimated that the pulse was shallowest at Gwan (P < 0.05). For the repeated measures, the new SD-based model showed a smaller coefficient of variation (CV ≈ 7.6%) than the two CP-based models (CV ≈ 13.5% and 12.3%, resp.). The SD-based pulse depth assessment is not sensitive to the complex geometry around the palpation locations and temperature variation of contact sensors, which allows cost-effective sensor technology.

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Section: Methodssupporting

confidence: 52%

New Assessment Model of Pulse Depth Based on Sensor Displacement in Pulse Diagnostic Devices

Bae

Jeon

Kim

et al. 2013

Evidence-Based Complementary and Alternative Medicine

View full text Add to dashboard Cite

show abstract

“…The exact locations of Cun and Chi vary with the patient's elbow length (EL). In accordance with ancient TEAM scriptures, Tyan et al showed that the lengths of Cun, Guan , and Chi in a cohort of 200 adult subjects were approximately 6%, 6%, and 7% of the EL, respectively [ 5 ]; the 6% of the EL was approximately 1.54 cm for male subjects and 1.4 cm for female subjects. This result reflects the varying elbow lengths between the two gender groups.…”

Section: Introductionmentioning

confidence: 95%

Differences in the Properties of the Radial Artery betweenCun,Guan,Chi, and Nearby Segments Using Ultrasonographic Imaging: A Pilot Study on Arterial Depth, Diameter, and Blood Flow

Kim

Lee

et al. 2015

Evidence-Based Complementary and Alternative Medicine

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Aim of the Study. The three conventional pulse-diagnostic palpation locations (PLs) on both wrists are Cun, Guan, and Chi, and each location reveals different clinical information. To identify anatomical or hemodynamic specificity, we used ultrasonographic imaging to determine the arterial diameter, radial artery depth, and arterial blood flow velocity at the three PLs and at nearby non-PL segments. Methods. We applied an ultrasound scanner to 44 subjects and studied the changes in the arterial diameter and depth as well as in the average/maximum blood flow velocities along the radial artery at three PLs and three non-PLs located more proximally than Chi. Results. All of the measurements at all of the PLs were significantly different (P < 0.01). Artery depth was significantly different among the non-PLs; however, this difference became insignificant after normalization to the arm circumference. Conclusions. Substantial changes in the hemodynamic and anatomical properties of the radial artery around the three PLs were insignificant at the nearby non-PLs segments. This finding may provide a partial explanation for the diagnostic use of “Cun, Guan, and Chi.”

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“…For example, a survey of 78 adult subjects has shown that the Cun was approximately 1.14 cm distal from Guan [7]. Jang-Han Bae defined the region of the Cun as that between the styloid process and the prominent bone [17], while Tyan C. C thought the location of Cun was from the distal wrist crease to the highest point of “prominent bone” [19].…”

Section: Discussionmentioning

confidence: 99%

Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

Chen

Jiang

et al. 2019

Evidence-Based Complementary and Alternative Medicine

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Information on anatomy of the Cun position at wrist is lacking; whether the blood vessel taking pulse in Cun is the radial artery or the superficial palmar branch is also clinically controversial. The objective was to investigate the boundaries and contents, and the vascular distribution and their pulse points in Cun. Thirty-two upper extremities of 16 human cadavers were investigated for dissection and observation. The boundaries, contents, and blood vessel distribution in Cun were observed; the location of pulse points in Cun was identified; the length of the superficial palmar branch in wrist pulse (L1), the pulp width of the index finger (L2), and the angle between the radial artery and the superficial palmar branch were measured. The results showed that the Cun was located in the region formed by the bulge of the prominent bone proximal to the palm, the radial flexor tendon, the tubercle of scaphoid, and the abductor longus muscle tendon. In this area, the radial artery could be pulsed part in the medial side of the abductor longus muscle tendon, while the superficial palmar branch lied near the surface and was easy to pulse in the lateral side of the radial flexor tendon and the medial side of the tubercle of scaphoid. The ratio of L1 to L2 was 1.2±0.8, and the angle was 23.3±9.9°. The results suggested that it could not be generalized that the blood vessel taking pulse in Cun was the radial artery or the superficial palmar branch; it might depend on the vascular distribution in Cun, the region of finger positioning, and the patient’s pulse condition.

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How to Standardize 3 Finger Positions of Examiner for Palpating Radial Pulses at Wrist in Traditional Chinese Medicine

Cited by 12 publications

References 0 publications

New Assessment Model of Pulse Depth Based on Sensor Displacement in Pulse Diagnostic Devices

New Assessment Model of Pulse Depth Based on Sensor Displacement in Pulse Diagnostic Devices

Differences in the Properties of the Radial Artery betweenCun,Guan,Chi, and Nearby Segments Using Ultrasonographic Imaging: A Pilot Study on Arterial Depth, Diameter, and Blood Flow

Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

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