Investigating the effects of tingling sensations during shoulder surgery anesthesia on recovery

Effect of Paresthesia During Interscalene Block Procedure on the Incidence of Postoperative Neurological Symptoms: A Prospective Observational Clinical Study

Ankara City Hospital Bilkent · NCT06906458

This study is testing how tingling sensations during shoulder surgery anesthesia affect recovery and any nerve-related symptoms in patients aged 18 to 65.

Quick facts

Study typeObservational
Enrollment120 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorAnkara City Hospital Bilkent (other)
Locations1 site (Ankara, Ankara, Çankaya)
Trial IDNCT06906458 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess how paresthesia, or abnormal sensations like tingling, during the interscalene block procedure affects the occurrence of postoperative neurological symptoms in patients undergoing arthroscopic shoulder surgery. Patients aged 18-65 with ASA physical status I or II will be monitored for various parameters, including complications during the block, intraoperative data, and postoperative recovery indicators. Follow-up assessments will be conducted through phone interviews to evaluate symptoms such as numbness, tingling, and pain at multiple time points after discharge.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-65 with ASA physical status I or II scheduled for arthroscopic shoulder surgery requiring an interscalene nerve block.

Not a fit: Patients with a body mass index over 35, psychiatric disorders, or pre-existing neuropathy in the limb to be operated on may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of postoperative neurological symptoms and improve pain management strategies following shoulder surgery.

How similar studies have performed: While similar studies have explored postoperative pain management, this specific investigation into paresthesia's impact on neurological symptoms is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ASA physical status I to II
* Age range of 18-65 years
* Patients planned for interscalene nerve block for analgesia prior to arthroscopic shoulder surgery in the beach chair position under general anesthesia

Exclusion Criteria:

* body mass index \>35 kg/m²)
* history of drug use
* Patient's refusal to participate in the study
* Psychiatric disorders
* Central nervous system diseases
* Vestibular disorders
* Presence of diabetes, neuropathy, and paralysis
* Pregnancy
* Open shoulder surgery
* Allergy to local anesthetics
* Coagulopathy
* Severe thrombocytopenia
* Infection at the puncture site
* Pre-existing neuropathy in the limb to be operated on
* Use of opioid and antiemetic medications before surgery
* Use of dexamethasone
* Lung disease
* Low baseline oxygen saturation
* Patients who cannot cooperate in the postoperative period (e.g., mental retardation, delirium, language acquisition deficiency, etc.)

Where this trial is running

Ankara, Ankara, Çankaya

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Interscalene Block, Postoperative Pain, Interscalene block, Paresthesia, Postoperative neurological symptoms

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.