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Ear-Vagus Nerve Stimulation and Body Acupuncture for Gut Motility in Elderly ICU Patients

2026年10月1日 更新者:Qian Zhang、The First Affiliated Hospital with Nanjing Medical University

Auricular Vagus Nerve Stimulation Combined With Body Acupuncture for Gut-Brain Axis Modulation and Improved Gastrointestinal Motility in Elderly Critically Ill Patients

This study aims to investigate whether acupuncture, specifically a combination of body acupuncture and ear vagus nerve stimulation (taVNS), can improve gastrointestinal function in critically ill elderly patients in the Intensive Care Unit (ICU). Gastrointestinal motility problems, such as delayed stomach emptying and constipation, are common in elderly ICU patients and can interfere with feeding, increase infection risk, and worsen outcomes. This research will test if adding acupuncture to standard care helps patients tolerate tube feeding (enteral nutrition) faster, reduces the need for intravenous nutrition, and improves overall recovery. Participants will be randomly assigned to one of three groups: standard care alone, standard care plus body acupuncture, or standard care plus both body acupuncture and ear vagus nerve stimulation. The study will compare the time it takes to achieve target feeding goals, changes in gastrointestinal function scores, and other clinical outcomes. This single-center, prospective, randomized controlled trial will enroll 60 elderly patients from the Geriatric ICU of Jiangsu Province Hospital and aims to provide evidence for integrating traditional Chinese medicine into critical care practice.

調査の概要

状態

まだ募集していません

条件

介入・治療

研究の種類

介入

入学 (推定)

60

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

65年歳以上 (高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

  1. Age ≥ 65 years.
  2. Critically ill patients admitted to the ICU with APACHE II score ≥ 15.
  3. NRS 2002 score ≥ 3 at ICU admission, indicating risk of malnutrition and requiring nutritional support.
  4. Presence of gastrointestinal dysfunction or at risk, with AGI grade I-II.
  5. Condition considered reversible.
  6. Written informed consent obtained from the participant or legal representative before any study procedures.

Exclusion Criteria:

  1. ICU length of stay less than 7 days.
  2. Presence of severe gastrointestinal disease with contraindications to enteral nutrition and inability to receive conventional medications via the enteral route, such as acute gastrointestinal bleeding, mechanical intestinal obstruction, post-abdominal surgery, or abdominal compartment syndrome.
  3. Skin lesions at the acupuncture sites that are not suitable for acupuncture treatment.
  4. Advanced malignancy with significantly shortened life expectancy.
  5. Participation in another clinical trial.
  6. The treating clinician determines that the intervention is not in the patient's best interest.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:支持療法
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:独身

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ:Standard Care Group

Standard Care Group

Standard ICU care including hemodynamic management, enteral nutrition support per protocol (energy target: 25 kcal/kg ideal body weight/day; protein target: 1.3 g/kg ideal body weight/day), and management of feeding complications such as diarrhea, abdominal distension, and gastric retention. Enteral nutrition is initiated within 24-48 hours of ICU admission.

アクティブコンパレータ:Body Acupuncture Group

Participants receive standard ICU care plus body acupuncture therapy. Acupuncture is performed daily by a licensed acupuncturist with 10 years of experience. Needles are inserted at acupoints including CV12, CV10, ST36, PC6, and others, retained for 30 minutes per session. The intervention continues from ICU admission until ICU discharge, death, or discontinuation of nutritional support.

Standard ICU care including hemodynamic management, enteral nutrition support per protocol (energy target: 25 kcal/kg ideal body weight/day; protein target: 1.3 g/kg ideal body weight/day), and management of feeding complications such as diarrhea, abdominal distension, and gastric retention. Enteral nutrition is initiated within 24-48 hours of ICU admission.

Acupuncture at body acupoints including CV13 (Shangwan), CV12 (Zhongwan), CV10 (Xiawan), ST21 (Liangmen), ST25 (Tianshu), SP15 (Daheng), CV4 (Guanyuan), CV6 (Qihai), CV7 (Yinjiao), LI4 (Hegu), TE6 (Zhigou), ST36 (Zusanli), ST37 (Shangjuxu), ST41 (Jiexi), and LR3 (Taichong). Sterile disposable needles (0.25mm × 40mm) are inserted 1-1.5 cun to achieve deqi sensation, retained for 30 minutes per session, once daily.

実験的:Combined Auricular VNS and Body Acupuncture Group

Participants receive standard ICU care, body acupuncture (as described in Arm 2), and additional transcutaneous auricular vagus nerve stimulation (taVNS). A medium-frequency electrical stimulator is applied to the cymba concha region of the ear (25 Hz, 0-2 mA, 30 minutes per session, once daily). The intervention continues from ICU admission until ICU discharge, death, or discontinuation of nutritional support.

Standard ICU care including hemodynamic management, enteral nutrition support per protocol (energy target: 25 kcal/kg ideal body weight/day; protein target: 1.3 g/kg ideal body weight/day), and management of feeding complications such as diarrhea, abdominal distension, and gastric retention. Enteral nutrition is initiated within 24-48 hours of ICU admission.

Acupuncture at body acupoints including CV13 (Shangwan), CV12 (Zhongwan), CV10 (Xiawan), ST21 (Liangmen), ST25 (Tianshu), SP15 (Daheng), CV4 (Guanyuan), CV6 (Qihai), CV7 (Yinjiao), LI4 (Hegu), TE6 (Zhigou), ST36 (Zusanli), ST37 (Shangjuxu), ST41 (Jiexi), and LR3 (Taichong). Sterile disposable needles (0.25mm × 40mm) are inserted 1-1.5 cun to achieve deqi sensation, retained for 30 minutes per session, once daily.

Medium-frequency electrical stimulator (SNM-FDCM01, Ningbo Maida Medical Instruments Co., Ltd.) applied to the cymba concha region of the ear. Parameters: active period 2 seconds, rest period 3 seconds; pulse width 0.5 ms; frequency 25 Hz; intensity 0-2 mA (maximum tolerable by patient); 30 minutes per session, once daily.

この研究は何を測定していますか?

主要な結果の測定

結果測定
時間枠
Time to Achieve Enteral Nutrition Target
時間枠:From ICU admission up to 28 days
From ICU admission up to 28 days

二次結果の測定

結果測定
メジャーの説明
時間枠
Change in Acute Gastrointestinal Injury (AGI) Grade
時間枠:Baseline Day3 Day 7
Baseline Day3 Day 7
Change in Feeding Intolerance Score (FIS)
時間枠:Baseline Day3 Day 7

Minimum Value: 0 (The lowest score, where all evaluation items are scored as 0).

Maximum Value: 15. The score is calculated by summing three items (abdominal distension and/or pain + nausea and/or vomiting + diarrhea). Since each item has a maximum score of 5, the theoretical maximum total score is 5 + 5 + 5 = 15.

Interpretation (Higher vs. Worse): Higher scores indicate a worse outcome. A higher score represents more severe feeding intolerance (e.g., severe abdominal distension, frequent vomiting, massive diarrhea), requiring stricter clinical management. According to the notes in the image:

0-2 points: Continue enteral nutrition, increase or maintain the original rate, and provide symptomatic treatment.

3-4 points: Continue enteral nutrition, slow down the rate, and reassess after 2 hours.

≥5 points: Suspend enteral nutrition and take corresponding management measures.

Baseline Day3 Day 7
Change in Gastrointestinal Dysfunction Score (GIDS)
時間枠:Baseline Day3 Day 7

Minimum Value: 0 (0 - No risk: No symptoms, or any of the listed conditions present at the time of oral intake).

Maximum Value: 4 (4 - Life-threatening: One of the listed conditions present).

Interpretation (Higher vs. Worse): Higher scores indicate a worse outcome. Higher scores represent more severe gastrointestinal dysfunction and a higher risk of mortality. The specific grades are as follows:

0 (No risk): No symptoms, or any of the following conditions present at the time of oral intake (e.g., absent bowel sounds, vomiting, gastric residual volume >200ml, etc.).

  1. (Increased risk): Two of the following symptoms are present (e.g., no oral intake, absent bowel sounds, vomiting, gastric residual volume >200ml, etc.).
  2. (Gastrointestinal dysfunction): Three or more symptoms scored as 1, OR two of the following symptoms (severe diarrhea, gastrointestinal bleeding requiring transfusion, intra-abdominal pressure >20 mmHg).
  3. (Gastrointestinal failure): Three or more of the followin
Baseline Day3 Day 7
Change in Intra-Abdominal Pressure (IAP)
時間枠:Baseline Day3 Day 7
Baseline Day3 Day 7
Change in Plasma Levels of Intestinal Injury Biomarkers (I-FABP)
時間枠:Baseline Day 7

ng/mL

Baseline Day 7
Change in Plasma Levels of Intestinal Injury Biomarkers (DAO)
時間枠:Baseline and Day 7

ng/mL

Baseline and Day 7
Proportion of Participants Requiring Supplemental Parenteral Nutrition (SPN)
時間枠:Day 7
Day 7
Incidence of Secondary Intestinal Infections
時間枠:Up to 28 days from ICU admission
Up to 28 days from ICU admission
Duration of Mechanical Ventilation
時間枠:Up to 28 days from ICU admission
Up to 28 days from ICU admission
Length of ICU Stay
時間枠:Up to 28 days from ICU admission
Up to 28 days from ICU admission
28-Day Mortality
時間枠:Day 28
Day 28
Change in Plasma Levels of Citrulline
時間枠:Baseline and Day 7

μmol/L

Baseline and Day 7

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年9月1日

一次修了 (推定)

2027年12月1日

研究の完了 (推定)

2028年12月1日

試験登録日

最初に提出

2026年9月20日

QC基準を満たした最初の提出物

2026年10月1日

最初の投稿 (実際)

2026年10月6日

学習記録の更新

投稿された最後の更新 (実際)

2026年10月6日

QC基準を満たした最後の更新が送信されました

2026年10月1日

最終確認日

2026年8月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • 2026-SR-295

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

はい

IPD プランの説明

The de-identified individual participant data (IPD) that underlie the results reported in this article, including data dictionaries, will be made available to researchers who provide a methodologically sound proposal. Data will be available beginning 9 months and ending 36 months following article publication. Proposals should be directed to dongjiaxin1861@163.com. To gain access, data requestors will need to sign a data access agreement.

IPD 共有時間枠

Data will be available beginning 9 months and ending 36 months following article publication.

IPD 共有アクセス基準

De-identified individual participant data and supporting information will be made available to researchers whose proposed use of the data has been approved by an independent review committee. Requests must be directed to the corresponding author (dongjiaxin1861@163.com) and requestors must sign a data access agreement.

IPD 共有サポート情報タイプ

  • STUDY_PROTOCOL
  • SAP

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