The Effects of TAP Block on Thiol/Disulfide Homeostasis and Pain in Laparoscopic Gynecological Surgery

Study Overview
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Brief Summary
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In the study, it was aimed to compare patients who underwent laparoscopic gynecological surgery with and without TAP block in terms of postoperative pain levels and Thiol/Disulfide homeostasis. In addition, the relationship between postoperative pain levels and Thiol/Disulfide homeostasis will be investigated.

Detailed Description
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Thiols are organic sulphur derivatives containing Sulfhydryl Residues (-SH) in their active regions. Thiols easily react with oxygen containing free radicals to form disulfides. This is a defence mechanism against oxidative stress.7 An automated analysis quantitatively measuring serum native and total thiol, and disulfides has been recently described as a method to determine dynamic Thiol/Disulfide Homeostasis (TDH).The role of dynamic thioldisulfide homeostasis has been increasingly shown in many diseases. There is a growing number of evidences that an abnormal thiol-disulfide homeostasis may play role in the pathogenesis of a variety of diseases such as cardiovascular disease, malignancies, rheumatoid arthritis, chronic kidney disease, and acquired immunodeficiency syndrome. Laparoscopic gynecological surgery has several advantages when compared to open surgery, including faster postoperative recovery and lower pain scores. However, the possibility of significant postoperative pain remains. Trocar placement, tissue dissection, and pneumoperitoneum formation contribute to postoperative pain in laparoscopic surgery. If this pain is not treated adequately, it can cause an increase in pain levels, nausea and vomiting, and as a result, a decrease in patient comfort and a prolongation of hospitalization. Ultrasound-guided transversus abdominis plane (TAP) block is easy to perform and has recently become a popular technique for reducing postoperative pain after abdominal surgery. It has been reported that it provides effective postoperative analgesia with a decrease in opioid consumption in various open abdominal surgical procedures and contributes to faster patient recovery. In the study, it was aimed to compare patients who underwent laparoscopic gynecological surgery with and without TAP block in terms of postoperative pain levels and Thiol/Disulfide homeostasis. In addition, the relationship between postoperative pain levels and Thiol/Disulfide homeostasis will be investigated.

Official Title
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The Effects of TAP Block on Thiol/Disulfide Homeostasis and Pain in Laparoscopic Gynecological Surgery

Conditions
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Pain, Postoperative, Oxidative Stress

Intervention / Treatment
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* Other: Transversus abdominis plane (TAP) block


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients who have undergone laparoscopic gynecological surgery Patients who agreed to participate in the study Exclusion Criteria: Patients who did not agree to participate in the study Patients with missing data

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Patients with TAP block<br>After induction of anesthesia, TAP block was applied to the patients under ultrasound guidance. | Other: Transversus abdominis plane (TAP) block<br>* Transversus abdominis plane (TAP) block: injection of a local anesthetic into a region between the internal oblique and transversus abdominis muscles.<br>|
| Patients without TAP block<br> | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Thiol/Disulphide Homeostasis | In order to determine thiol / disulphide homeostasis, 5 ml blood samples were taken 2 times from each patient (T1: 5 minutes before induction of anesthesia, T2: at the time of the surgery over). | 5 minutes before induction of anesthesia | 
| Thiol/Disulphide Homeostasis | In order to determine thiol / disulphide homeostasis, 5 ml blood samples were taken 2 times from each patient (T1: 5 minutes before induction of anesthesia, T2: at the time of the surgery over). | at the time of the surgery over | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pain on the Numeric Rating Scale (NRS) | Participants recorded pain rated on the numeric rating scale (NRS) at 6 time points: 0 hours postoperatively, 2 hours postoperatively, 4 hours postoperatively, 8 hours postoperatively, 12 hours postoperatively, 24 hours postoperatively. NRS range was from 0-10 with 0 being no pain and 10 the worst pain possible. | 0 hours postoperatively, 2 hours postoperatively,4 hours postoperatively,8 hours postoperatively,12 hours postoperatively,24 hours postoperatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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thiol/disulphide homeostasis, TAP block, Laparoscopic Gynecological Surgery