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The goal of this observational study is to determine in women undergoing cesarean section if total oxidant status and total antioxidant status in breastmilk taken at the 6th hour postoperatively changes between general and regional anesthetic protocols.
Researchers will compare general anesthesia and regional anesthesia groups to see if total oxidant status and total antioxidant status in breastmilk taken at the 6th hour postoperatively changes.
Participants will provide 2 ml of breastmilk at the 6th postoperative hour.
Full description
In recent years, the rate of cesarean delivery in our country has ranged between 46% and 54%. Anesthesiologists only have safety concerns for the patient during routine surgery. In cesarean section operations, all the changes that occur in the mother can affect the fetus. This makes cesarean section operations more special than other surgeries. Cesarean section operations can be performed under general anesthesia and regional anesthesia methods. In recent years, regional anesthesia has been preferred because of its advantages, such as patient's request, consciousness, no need for intubation, no risk of aspiration, no respiratory depression in the newborn, and no uterine atony. However, general anesthesia is also frequently used in emergencies, patient requests, and contraindications to regional anesthesia.
Breast milk is the most appropriate nutritional product for newborns. Only breast milk is recommended for newborns for the first 4-6 months. During the period when infants are breastfed, some drugs used by the mother may pass into breast milk and cause adverse effects in infants. Most of the cases of adverse effects due to drugs passing into breast milk occur in newborns younger than two months, especially in the first month of life. In line with this information, it is known that anesthetic drugs also pass into breast milk. Whether it is general anesthesia or regional anesthesia, anesthetic drugs are excreted into breast milk in minimal doses. However, studies show that the anesthetic drugs that pass into breast milk are at levels that do not cause serious side effects in the baby.
Many risk factors can cause oxidative stress, including alcohol, drugs, environmental pollutants, intense exercise, inflammation, and sepsis. Biological targets most exposed to oxidative damage include enzymes, cell membranes, and DNA. Oxygen radicals have been implicated as an essential cause of mechanisms that can lead to the rapid degradation of proteins. Free radical-induced changes in proteins increase the degradation of enzymes. Oxidative damage to protein products can affect the activity of enzymes, receptors, and transporter proteins. Oxidatively damaged protein products may contain reactive groups that can damage the cell membrane and many cellular functions. Peroxidation of lipids occurs when biological membranes react with unsaturated fatty acids and proceed by radical chain reaction. Oxidative events cause changes in the physical-chemical properties of membranes and thus alter fluidity and permeability, with membranes disintegrating with swelling of intracellular organelles. DNA and RNA are sensitive to oxidative damage. DNA is thought to be the main target, especially in aging and cancer. Oxidative nucleotides such as glycol, thymidine glycol, and 8-hydroxy-2- deoxyguanosine have increased during oxidative damage to DNA by UV radiation or free radical damage. Mitochondrial DNA has been reported to be more susceptible to oxidative damage in many diseases, including cancer.
In the literature review in which we investigated the effects of anesthesia on breast milk, the amount of drugs such as anesthetic agents, narcotic agents, and muscle relaxants in breast milk in the postoperative period was investigated. However, no study has been found to show how oxidative stress parameters change in breast milk due to both the anesthetic technique used and secondary causes (stress, tissue damage, etc.) caused by the operation in a newly operated mother. Our study aimed to compare oxidative stress parameters in breast milk after cesarean section under general anesthesia and regional anesthesia. A comprehensive research evaluating total oxidant/antioxidant systems was not found in our literature review. Therefore, our study will contribute to the literature.
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140 participants in 2 patient groups
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Özlem Ersoy Karka, Ass. Prof.; Gizem Demir Şenoğlu, Ass. Prof.
Data sourced from clinicaltrials.gov
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