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The study determines De-qi needling depth (DND) using the needling method and safe needling depth (SND) using ultrasound for HT1–HT7 in healthy participants across BMI categories. Ninety volunteers were assessed, comparing ultrasound-referenced neurovascular depths and converting individual Cun to millimeters to quantify depth deviations. Results show systematic differences between underweight, overweight, and healthy-weight groups, with neuroarterial structure depth strongly linked to point depth while Cun shows weak correlation.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/deviation-of-needling-depth-of-heart-meridian-acupuncture-points-in-underweight-and-overweight-people-2025/511148/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/deviation-of-needling-depth-of-heart-meridian-acupuncture-points-in-underweight-and-overweight-people-2025/511148.png","ImageObject",300,407,{"name":92,"@type":93},"dawugda","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-07","2026-10-06",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How does the study define De-qi needling depth (DND) and safe needling depth (SND)?","Question",{"text":112,"@type":113},"DND is determined using the needling method based on patient sensory and motor responses. SND is determined using ultrasound to evaluate the depth of underlying neurovascular structures after converting Cun to millimeters.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which heart meridian points were examined in the study?",{"text":117,"@type":113},"The study examined HT1, HT2, HT3, HT4, HT5, HT6, and HT7.",{"name":119,"@type":110,"acceptedAnswer":120},"What is the relationship between acupuncture point depth and underlying anatomy in the results?",{"text":121,"@type":113},"The depth of heart meridian points is directly related to the depth of the underlying neuroarterial structures, and it weakly correlates with the Cun value measured in millimeters.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},511148,1791411929,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},3985747870947,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Article  \nDeviation of Needling Depth of Heart Meridian Acupuncture Points in Underweight and Overweight People  \nCitation: Al-Zamil, M. Deviation of Needling Depth of Heart Meridian Acupuncture Points in Underweight and Overweight People. Personalized Psychiatry and Neurology 2025, 5 (2): 2-18.  \n[https://doi.org/10.52667/2712-9179-](https://doi.org/10.52667/2712-9179-)[ ](https://doi.org/10.52667/2712-9179-)[2025-5-2-2-18](2025-5-2-2-18)  \nСhief Editor: Nikolaj G. Neznanov, DMedSci, Professor  \nReceived: 21 May 2025  \nAccepted: 11 June 2025  \nPublished: 15 June 2025  \nPublisher’s Note: V.M. Bekhterev NMRC PN stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.  \nCopyright: © 2025 by the authors.  \nMustafa Al-Zamil 1,2  \n1 Peoples’ Friendship University of Russia, 117198 Moscow, Russia;  \n2 Medical Dental Institute, 127253 Moscow, Russia  \n* Correspondence: [alzamil@mail.ru](alzamil@mail.ru)  \nAbstract: The depth of needle insertion is determined by the acupuncturist during the procedure based on the patient's sensory responses and motor responses that may occur at the tip of the inserted needle (De-qi reaction). Despite the existing specific recommendations and standards for the selection of acupuncture depth for almost all acupuncture points, the difficulty of performing acupuncture in patients with significant deviations in body weight from the norm remains. In this regard, we decided to determine the De-qi needling depth (DND) by the needling method and the safe needling depth (SND) by the ultrasound method of acupuncture points: HT1, HT2, HT3, HT4, HT5, HT6, HT7 in healthy people taking into account the body mass index (BMI) . Materials and methods: 90 volunteers were examined by needling method to determine DND and by ultrasound to determinate the depth of underlying neurovascular structures and SND after converting individual Сun to millimeters. Results: DND of HT1, HT2, and HT3 were more superficial in UWG compared to HWG at 1.83 mm and deeper in OWG compared to HWG at 4.9 mm. In contrast, the DND deviation of HT4, HT5, HT6, HT7 was significant but mild in both groups, with a slight decrease in UWG compared to HWG of only 0.54 mm and a slight increase in OWG compared to HWG not exceeding 1.5 mm. Conclusion: The depth of the acupuncture points of the heart meridian HT1, HT, HT3 strongly depends on the degree of obesity in overweight people and is less responsive to body weight in underweight people. At the same time, changes in the points HT4, HT5, HT6 and HT7 have slight deviations in underweight and overweight people compared to people with healthy weight. Moreover, the depth of the heart meridian points is directly related to the depth of the underlying neuroarterial structures and weakly correlates with the Cun value in millimeters.  \nKeywords: acupuncture; heart meridian, Cun, deqi, jiquan, qingling, shaohai, lingdao, tongli, yinxi, shenmen.  \n1. INTRODUCTION  \nThe Heart Meridian (HT) is one of the 12 principal meridians that regulate body functions in traditional East Asian medicine [1] . HT Includes 9 points on each arm, starting from the medial surface of the shoulder and ending with the ulnar side of the distal forearm and hand [2] (Figure 1) . According to the basic concept of acupuncture theory, it is believed that HT ensures the vital activity of the heart and all vessels located in an inextricable functional unity. [2, 3] . As stipulated in traditional Chinese medicine (TCM), the normalization of Yin energy in the HT, in addition to improving the condition of the heart and hemodynamics, has a positive effect on the speech and emotional functions of the brain [4]. In modern medicine, experimentally and clinically the impact on HT acupuncture points has a reliable therapeutic effect in treatment of heart diseases,[6, 7, 8], anxiety,[9, 10], insomnia [11], motor aphasia [12], dysarthria [13] and cognitive disorders [14] .  \nFigure 1. Information about the acupun","cbCaieOMdGTb5bsX","https://ap.wps.com/l/cbCaieOMdGTb5bsX","pdf",1505010,17,"English","# Abstract\n# Introduction\n## Heart meridian overview and point distribution\n## Clinical and theoretical background of acupuncture at HT points\n## Measurement of needle depth using Cun and safety considerations\n## Rationale for studying deviations by BMI","[{\"question\":\"How does the study define De-qi needling depth (DND) and safe needling depth (SND)?\",\"answer\":\"DND is determined using the needling method based on patient sensory and motor responses. SND is determined using ultrasound to evaluate the depth of underlying neurovascular structures after converting Cun to millimeters.\"},{\"question\":\"Which heart meridian points were examined in the study?\",\"answer\":\"The study examined HT1, HT2, HT3, HT4, HT5, HT6, and HT7.\"},{\"question\":\"What is the relationship between acupuncture point depth and underlying anatomy in the results?\",\"answer\":\"The depth of heart meridian points is directly related to the depth of the underlying neuroarterial structures, and it weakly correlates with the Cun value measured in millimeters.\"}]","Deviation of Needling Depth of Heart Meridian Acupuncture Points in Underweight and Overweight People - 2025 | PDF",1791248827,43]