Overview
Neoplasm of the gastric submucosa typically refers to lesions such as early-stage gastric cancers or benign tumors like carcinoids and adenomyomas, often managed via endoscopic submucosal dissection (ESD) for precise removal.Diagnosis
Endoscopic visualization to identify submucosal lesions 4.
Biopsy confirmation through endoscopic biopsy samples 4.
Imaging studies (e.g., CT, MRI) to assess extent and invasion 4.
Specific markers or pathology tests for differentiating between benign (e.g., carcinoid, adenomyoma) and malignant tumors 67.Management
Endoscopic Submucosal Dissection (ESD): Primary treatment method for precise removal 14.
Sedation Techniques:
- Propofol-based Sedation: Effective for sedation during ESD, with careful monitoring to avoid adverse effects 12.
- Dexmedetomidine with On-Demand Midazolam: Offers safety and efficacy, particularly in achieving adequate sedation levels 3.
Monitoring: Use of bispectral index (BIS) monitoring to optimize propofol dosing and enhance safety 25.Special Populations
Elderly Patients: Require lower propofol concentrations and may benefit from propofol target-controlled infusion (TCI) with BIS monitoring to minimize adverse events 2.
Comorbidities: Specific considerations for hemodynamic stability and respiratory function during sedation are crucial 123.Key Recommendations
Utilize endoscopic submucosal dissection (ESD) as the primary treatment modality for gastric submucosal neoplasms to ensure precise removal 4 (Evidence: Strong).
Employ propofol-based sedation with advanced monitoring techniques such as BIS for elderly patients to optimize safety and efficacy 25 (Evidence: Moderate).
Consider dexmedetomidine combined with on-demand midazolam for achieving satisfactory sedation levels during ESD procedures 3 (Evidence: Moderate).
Monitor for and manage potential complications like perforation and bleeding closely, especially in early ESD practitioners 4 (Evidence: Weak).
Tailor sedation dosing based on patient age and comorbidities to minimize adverse effects 23 (Evidence: Moderate).References
1 Yurtlu DA, Aslan F, Ayvat P, Isik Y, Karakus N, Ünsal B et al.. Propofol-Based Sedation Versus General Anesthesia for Endoscopic Submucosal Dissection. Medicine 2016. link
2 Gotoda T, Okada H, Hori K, Kawahara Y, Iwamuro M, Abe M et al.. Propofol sedation with a target-controlled infusion pump and bispectral index monitoring system in elderly patients during a complex upper endoscopy procedure. Gastrointestinal endoscopy 2016. link
3 Lee SP, Sung IK, Kim JH, Lee SY, Park HS, Shim CS et al.. Comparison of dexmedetomidine with on-demand midazolam versus midazolam alone for procedural sedation during endoscopic submucosal dissection of gastric tumor. Journal of digestive diseases 2015. link
4 Teoh AY, Chiu PW, Wong SK, Sung JJ, Lau JY, Ng EK. Difficulties and outcomes in starting endoscopic submucosal dissection. Surgical endoscopy 2010. link
5 Imagawa A, Fujiki S, Kawahara Y, Matsushita H, Ota S, Tomoda T et al.. Satisfaction with bispectral index monitoring of propofol-mediated sedation during endoscopic submucosal dissection: a prospective, randomized study. Endoscopy 2008. link
6 Nores JM, Dalayeun JF, Remy JM, Nenna AD. Gastric carcinoid tumour and parathyroid adenoma. Gut 1988. link
7 Stewart TW, Mills LR. Adenomyoma of the stomach. Southern medical journal 1984. link