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Changes in Vessels After Peripheral Block

NCT05968105 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 60

Last updated 2023-12-08

No results posted yet for this study

Summary

In patients with fluid deficit, vasoconstriction occurs in peripheral tissues and blood circulation is kept in the central area. It causes arterial vasodilation and hemodynamic variability by increasing the blood volume of the extremity due to the sympathectomy occurring after the block. When the investigators classify patients according to VCI-CI, it will be questioned whether there is a difference between patients' block quality and hemodynamic variability.

Conditions

  • Anesthesia, Local
  • Vena Cava Syndrome (Inferior) (Superior)
  • Fluid Loss
  • Postoperative Pain

Interventions

PROCEDURE

Lateral Sagittal Infraclavicular Block

Patients will be in the supine position and after aseptic conditions are provided, the axillary artery of the patient will be visualized in the craniocaudal plane, in the infraclavicular region and in the lateral sagittal position with the help of an 8-12 mHz linear probe. After the brachial plexus cords around the axillary artery are identified, a local anesthetic mixture will be applied in-plane between the posterior cord and the artery. During the block, patients will routinely be given a mixture of 0.25% bupivacaine + 0.5% lidocaine 0.5 mL/kg.

PROCEDURE

Inferior vena cava diameter >1.5 cm and Vena Cava Inferior Collapsibility Index (VCI-CI) < 50%

While the patients are lying in the supine position, the vena cava will be determined 2 cm before the inferior heart entrance with the help of a 3.5-5 mHz convex probe. M-mode ECHO will be used to determine the fluctuation rate of the VCI between inspiration and expiration. After determining the farthest and closest points in M-mode ECO, their ratios to each other will be calculated.

DIAGNOSTIC_TEST

Inferior vena cava diameter <1.5 cm and Vena Cava Inferior Collapsibility Index (VCI-CI) > 50%

While the patients are lying in the supine position, the vena cava will be determined 2 cm before the inferior heart entrance with the help of a 3.5-5 mHz convex probe. M-mode ECHO will be used to determine the fluctuation rate of the VCI between inspiration and expiration. After determining the farthest and closest points in M-mode ECO, their ratios to each other will be calculated.

Sponsors & Collaborators

  • Başakşehir Çam & Sakura City Hospital

    lead OTHER_GOV

Principal Investigators

  • Ergun Mendes · Başakşehir Çam & Sakura City Hospital

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-08-02
Primary Completion
2023-12-03
Completion
2023-12-03

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05968105 on ClinicalTrials.gov