[Effects of music therapy on pain and oxidative stress in oocyte pick-up: a randomized clinical trial].

BACKGROUND AND
OBJECTIVE: The aim was to investigate the effects of Turkish classical music on pain and oxidative stress in patients undergoing oocyte pick-up.
METHODS: The study was a randomized, controlled trial. The groups included were Group NM (Non-Music), control group; Group PM, which comprised patients who listened to music before the operation; and Group CM, which comprised patients who listened to music both before and during the operation. Blood was drawn prior to the operation to measure the oxidative stress values. Pain, hemodynamic parameters, oxidative stress values were assessed postoperatively.
RESULTS: The number of patients requiring additional propofol was higher in Group PM than in Groups NM and CM (p=0.003). The postoperative Visual Analog Scale (VAS) score were lower in Groups PM and CM than in Group NM (p=0.001, p=0.007) in the 1st and 60th minutes. The postoperative VAS score was lower in Group CM than in Group NM (p=0.045) in the 5th minute. The postoperative additional analgesic requirements were lower in Groups PM and CM than in Group NM (p=0.045). The postoperative blood glutathione peroxidase values were significantly higher in Groups PM and CM than in Group NM (p=0.001). The postoperative catalase values were significantly higher in Groups PM and CM than in Group NM (p=0.008 and p ≤0.001). The preoperative malondialdehyde values were significantly lower in Groups PM and CM than in Group NM. The preoperative nitric oxide values were higher in Groups PM and CM than in Group NM (p ≤0.001), whereas the postoperative nitric oxide values were lower in Groups PM and CM than in Group NM (p ≤0.001).
CONCLUSION: Turkish classical music has beneficial effects on pain and oxidative stress in oocyte pick-up patients.

Introduction

In Vitro Fertilization (IVF) is an important advanced procedure for the treatment of infertility and involves controlled stimulation of the ovaries with drugs, ultrasound-guided transvaginal oocyte aspiration from the ovaries, fertilization, and embryo transfer to the uterus. The collection of oocytes (eggs) using transvaginal ultrasound in IVF requires little time to accomplish. Puncturing the vaginal skin and ovarian capsule to aspirate the oocytes causes discomfort, which resembles deep menstrual pain.2, 3

Oxidative Stress (OS) is the result of an imbalance between the formation of Reactive Oxygen Species (ROS) and antioxidants. Oxidative stress biomarkers are important in assessing the disease state and health-promoting effects of antioxidants.

OS affects a woman's entire reproductive life and even after the reproductive life ends. Enzymatic antioxidants, also referred to as natural antioxidants, neutralize excess ROS and prevent damage to cellular structures. Studies have shown that OS is a factor responsible for female infertility.

Music therapy is considered an inexpensive, safe, and efficacious non-pharmacological and anxiolytic approach because of its effects on the perception of pain and anxiety. During music therapy, the patient's experience with music, along with his or her cultural habits, personality type, and music preferences, needs to be considered.8, 9 Turkish classical music is a genre of national and traditional music that Turkish people like to listen to. Our study focused on the Acemasiran mode of Turkish classical music. It affects the brain and bones and promotes a body fat balance. Additionally, it inspires creativity in the listener, revitalizes stagnant thoughts and emotions, and facilitates birth in pregnant women. Moreover, it helps correct improper intrauterine postures of fetuses, relieves pain and spasms, enhances sensuous pleasure, and promotes relaxation.

Although studies have examined the effects of music therapy on pain, no studies have examined the pain and OS of patients undergoing oocyte pick-up, with a focus on Catalase (CAT), Glutathione Peroxidase (GPX), Malondialdehyde (MDA), and Nitric oxide (NO). The present study aimed to investigate the effects of music on pain and OS in oocyte pick-up patients.

Methods

This study was approved by the Kahramanmaras Sutcu Imam University Faculty of Medicine's Institutional Review Board (2017/12-14, Dated: July 19, 2017), and written informed consent was obtained from all subjects participating in the trial. The trial was registered prior to patient enrollment at clinicaltrials.gov (NCT03346031, principal investigator: YOrak, date of registration: 11/07/2017). This prospective, randomized controlled study was performed between November 15, 2017 and June 1, 2018. A total of 93 women aged 18–40 years were included in this study. All patients were considered American Society of Anesthesiologists Classification (ASA) I, and none of the patients had hearing problems. Patients who did not volunteer to participate, those with comprehension or hearing problems, those outside the 18–40 age range, and those with melophobia were excluded. The study patients were randomly divided into the following three parallel groups: Group NM (Non Music), which comprised control patients (n = 31); Group PM, which comprised patients who listened to Turkish classical music before the operation (n = 31); and Group CM, which comprised patients who listened to Turkish classical music both before and during the operation (n = 31) (Fig. 1). The patients were handed sealed opaque envelopes with their group assignment in the examination room at least 1 hour before they entered the operating room and were randomized in the groups with a 1:1:1 ratio. Then, with respect to the random allocation sequence, participants will be allocated to their groups. The study procedure was shared with all patients. The patients in Group NM were taken to a relaxation room, where they remained for 1 hour and then blood samples were collected, and the values of OS parameters, including the CAT (u.mL−1), GPX (u.mL−1), MDA (nmoL.mL−1), NO (μmoL.L−1) levels, were measured. The patients were then taken to the operating room. The patients in Group PM were taken to the relaxation room, where they listened to Turkish classical music with headphones for 1 hour. After listening to music, blood samples were collected, and the OS parameters were measured before they were taken to the operating room. The patients in Group CM were taken to the relaxation room, where they listened to Turkish classical music with headphones for 1 hour. After listening to music, blood samples were collected, and the OS parameters were measured. They were then taken to the operating room, where they listened to Turkish classical music with headphones for the duration of the operation.

Figure 1

The consolidated standards of reporting trials (CONSORT) flow diagram. Group NM, Non-Music; Group PM, Preoperative Music; Group CM, Continuous Music.

For anesthesia induction, remifentanil 0.5 μg.kg−1 and propofol 1 mg.kg−1 were administered intravenously in a single dose. During the operation, the Systolic Blood Pressure (SBP, mmHg), Diastolic Blood Pressure (DBP, mmHg), Heart Rate (HR), Mean Arterial Pressure (MAP, mmHg), Oxygen Saturation (SpO2), and body movement were recorded at 1, 3, 5, 7, 10, and 15 minutes in the monitor (Drager/Infinity Vista XL, USA). Moreover, additional analgesic and anesthetic requirements throughout the operation were recorded. Additional doses of remifentanil and propofol were administered intravenously as single doses in response to the body movements. Upon completion of the operation, follicular fluid was collected in the operating room. The patients were taken to the relaxation room after the operation. Blood samples were taken from all patients in the groups to measure OS parameters within 3–5 minutes. The SBP, DBP, HR, MAP, SpO2 and pain data were recorded at 1, 5, 15, 30 and 60 minutes in the relaxation room. The Visual Analog Scale (VAS) was used to assess pain postoperatively. Patients with VAS scores of ≥5 and those requiring analgesic agents were administered a nonsteroidal anti-inflammatory drug (diclofenac sodium 75 mg, intramuscular), and this information was recorded. The patients were discharged when their levels of consciousness, speech and motor activity matched those at the time of admission and their vital signs were stable.

Oxidative stress measurement

The Beutler method was used for the GSH-Px activity measurement. GSH-Px catalyzes the oxidation of reduced lutathione (GSH) to oxidized glutathione (GSSG) by interacting with H2O2. In the presence of H2O2 and t-butyl hydroperoxide, GSSG composed of GSH-Px is reduced to GSH by interacting with glutathione reductase and NADPH. GSH-Px activity is detected spectrophotometrically by measuring the difference in absorbance at a wavelength of 340 nm during the oxidation of NADPH to NADP. The results were reported as units per milliliter (u.mL−1).

CAT activity was measured as the degradation rate of H2O2 using the Beutler method. The rate of disappearance of H2O2 was assessed spectrophotometrically at a wavelength of 230 nm. The test involved 50 μL of 1 M Tris HCI buffer (Ph 8), 930 μL of 10 mM H2O2, 930 μL of deionized water, and 20 μL of a serum sample. CAT activity was detected as the amount of enzyme causing approximately 90% destruction of the substrate in 1 minute in a volume of 1 mL. The results were reported as units per milliliter (u.mL−1).

The concentration of tissue lipid peroxidation (total MDA) was measured as reported by Ohkawa. The reaction mixture included 0.1 mL of a supernatant, 1.5 mL of 20% acetic acid, 0.2 mL of 8.1% sodium dodecyl sulfate and 1.5 mL of na 0.8% aqueous solution of Thiobarbituric Acid (TBA). The pH of the mixture was regulated to 3.5, and the volume was increased to 4.0 mL with the addition of distilled water. Then, 5.0 mL of a mixture of n-butanol and pyridine (15:1, v/v) were added. After centrifugation at 4000 rpm for 10 minutes, the absorbance of the organic layer was moderated at 532 nm. The results were reported as nanomoles per milliliter (nmoL.mL−1).

The serum NO levels were measured with the use of the Griess reagent (sulfanilamide and N-1-naphthylethylendiamine dihydrochloride). Five microliters of reconstituted nitrate reductase and 10 μL of 2 mmoL.L−1 NADH were added to the samples, which were incubated at room temperature for 20 minutes to convert all the nitrate to nitrite. The samples were deproteinized, and 100 μL of Griess reagent was added. After color advancing was performed at room temperature, the absorbance values were measured at a wavelength of 540 nm. The samples were adjusted in pairs. The amount of nitrite in the serum was estimated by a standard curve obtained from the enzymatic conversion of potassium nitrate to nitrite. The results were reported as micromoles per liter (μmoL.L−1).

The visual analog scale (VAS)

The VAS is commonly used for measuring pain severity. It is shown as a 10 cm horizontal line on which the patient's pain intensity and severity is represented by a point between the following limits: “no pain at all” and the “worst pain conceivable”. The VAS is simple, reliable, and valid for assessing pain severity or intensity.

Statistical analysis

In our study, the statistical parameters in the reference study were taken into account in determining the sample size. Our study consist of three groups, VAS and oxidative stress parameters were primary outcome measures. Hemodynamic parameters were secondary outcome measures. The postoperative pain score in the reference study was based on. Group M 33.8 ± 13.6 and Group C 45.1 ± 16.2 values were taken into consideration in the reference study. A total of 93 patients, with a test power of α = 0.05 first type and β = 0.20 second type error level, 0.80 test power for each group, were planned.

The conformity of the variables to a normal distribution was analyzed using the Shapiro-Wilk test. Repeated measures ANOVA was applied to repeated measurements to examine the differences between the measurements for normally distributed variables. One-way ANOVA was used for comparisons between three or more groups. Post hoc multiple comparisons were conducted using Tukey's HSD test, Tamhane's T2 test, and Dunnett's test. Pre- and postoperative comparisons were examined using the Wilcoxon signed rank test for variables that did not show a normal distribution. Comparisons between three or more groups were conducted using the Kruskal-Wallis test. Post hoc multiple comparisons were conducted using the Dunn-Sidak test. The Chi-Squared test and Fisher's exact test were used to evaluate the relationships among the frequency distributions of categorical variables. The statistical parameters of the normally distributed variables are expressed as the mean ± SD, whereas the statistical parameters of the variables that were not distributed normally are expressed as the median (min–max). Statistical analyses were conducted using the IBM SPSS 22 package. A p-value <0.05 was considered statistically significant.

Results

A total of 93 patients were included in the study (Fig. 1). No differences were noted between the patients’ age, and Body Mass Index (BMI) (Table 1). All patients were ASA status I.

Table 1

Demographic characteristics by each group.

	Control (n = 31)	Preoperative music (n = 31)	Preoperative + perioperative music (n = 31)	p
BMIa (Mean ± SD)	26.50 ± 4.41	28.03 ± 4.36	26.46 ± 4.14	0.267
Agea (Mean ± SD)	31.10 ± 5.62	31.00 ± 5.96	31.55 ± 4.19	0.910

One Way Anova; α = 0.05.

BMI, Body Mass Index.

The number of patients requiring additional analgesic and/or anesthetic drugs according to their body movements was significantly lower in Groups PM and CM than in Group NM (p = 0.013) (Table 2).

Table 2

Distributions of patients requiring additional operative analgesics and anesthetics based on their body movements by study group.

	Additional analgesics and anesthetics required				Total		p
	No		Yes		n	%
	n	%	n	%
Control							0.273
No movement	1	4.5	0	0.0	1	2.8
Upper extremity movement	7	31.8	1	7.1	8	22.2
Lower movement knee joint	1	4.5	1	7.1	2	5.6
Hip movement	2	9.1	0	0.0	2	5.6
Upper extremity + lower movement knee joint	3	13.6	5	35.7	8	22.2
Upper extremity + hip movement	1	4.5	0	0.0	1	2.8
Lower movement knee joint + hip movement	1	4.5	0	0.0	1	2.8
Upper extremity + lower movement knee joint + hip movement	6	27.3	7	50.0	13	36.1
Preoperative music							0.088
No movement	3	10.0	0	0.0	3	8.1
Upper extremity movement	13	43.3	1	14.3	14	37.8
Lower movement knee joint	2	6.7	0	0.0	2	5.4
Hip movement	0	0.0	1	14.3	1	2.7
Upper extremity + lower movement knee joint	5	16.7	4	57.1	9	24.3
Upper extremity + hip movement	5	16.7	1	14.3	6	16.2
Lower movement knee joint + hip movement	2	6.7	0	0.0	2	5.4
Preoperative music + perioperative music							0.173
No movement	2	6.1	0	0.0	2	5.4
Upper extremity movement	7	21.2	1	25.0	8	21.6
Lower movement knee joint	3	9.1	2	50.0	5	13.5
Hip movement	1	3.0	1	25.0	2	5.4
Upper extremity + lower movement knee joint	9	27.3	0	0.0	9	24.3
Upper extremity + hip movement	5	15.2	0	0.0	5	13.5
Lower movement knee joint + hip movement	2	6.1	0	0.0	2	5.4
Upper extremity + lower movement knee joint + hip movement	4	12.1	0	0.0	4	10.8
Total							0.085
No movement	6	7.1	0	0.0	6	5.5
Upper extremity movement	27	31.8	3	12.0	30	27.3
Lower movement knee joint	6	7.1	3	12.0	9	8.2
Hip movement	3	3.5	2	8.0	5	4.5
Upper extremity + lower movement knee joint	17	20.0	9	36.0	26	23.6
Upper extremity + hip movement	11	12.9	1	4.0	12	10.9
Lower movement knee joint + hip movement	3	3.5	0	0.0	3	2.7
Upper extremity + lower movement knee joint + hip movement	12	14.1	7	28.0	19	17.3
Total	85	100.0	25	100.0	110	100.0
Control	22	25.8	14	56.0	36	32.8	0.013a
Preoperative music	30	35.2	7	28.0	37	33.6
Preoperative music + perioperative music	33	39.0	4	16.0	37	33.6

Chi-Squared test; Fisher's exact test; α = 0.05.

Distribution of frequencies between groups is statistically significant.

The duration of the operation was the longest in Group PM. There was a significant difference between Group PM and Group CM in terms of the operation time (p = 0.023). The operation time was shorter in Group CM. The amount of additional remifentanil required during the operation was lower in Group CM than in Groups PM and NM, and the latter difference was found to be statistically significant (p = 0.001 and p = 0.001, respectively). The amount of additional propofol required was significantly higher in Group PM than in Groups NM and CM (p = 0.003) (Table 3).

Table 3

Comparisons of the operative measurements among the study groups.

	Control (n = 31)	Preoperative music (n = 31)	Preoperative + perioperative music (n = 31)	p
	Mean ± SD	Mean ± SD	Mean ± SD
Duration of operation	10.31 ± 3.72	12.03 ± 4.46c	9.68 ± 2.87b	0.023d
Remifentanil	35.06 ± 7.47	35.81 ± 6.92	34.46 ± 5.98	0.695
Propofol	68.47 ± 16.12	71.62 ± 13.23	68.92 ± 11.49	0.569
Number of follicles	9.67 ± 5.36	10.84 ± 8.07	10.08 ± 5.68	0.737
Number of oocytes	7.97 ± 5.87	9.38 ± 7.13	8.41 ± 5.74	0.619
Additional propofol dose	61.25 ± 35.22b	86.49 ± 60.52a,c	52.97 ± 22.93b	0.003d
Additional remifentanil dose	55.00 ± 50.31c	37.03 ± 25.48	24.32 ± 15.64a	0.001d

One-way Anova; post hoc: Tukey's HSD test; Dunnett's test; α = 0.05.

Difference with the control group is statistically significant.

Difference with the preoperative music group is statistically significant.

Difference with the preoperative + perioperative music group is statistically significant.

Difference is statistically significant.

The postoperative pain (VAS) scores at the 1st, 5th, and 60th minute were significantly lower in Groups PM and CM than in Group NM (p = 0.001, p = 0.045, and p = 0.007, respectively) (Table 4). The postoperative additional analgesic (diclofenac sodium 75 mg) requirements were significantly lower in Groups PM and CM than in Group NM (p = 0.045).

Table 4

Comparisons of the postoperative visual analog scale (vas) scores among the study groups.

	Control (n = 31)	Preoperative music (n = 31)	Preoperative + perioperative music (n = 31)	p
	Mean ± SD	Mean ± SD	Mean ± SD
1st min	3.69 ± 2.57b,c	0.78 ± 0.65a	1.65 ± 1.06a	0.001d, f
5th min	3.78 ± 2.52c	2.78 ± 1.59	2.41 ± 1.02a	0.045d,f
15th min	4.11 ± 2.73	3.24 ± 1.69	2.92 ± 1.13	0.121d
30th min	3.44 ± 2.37	3.27 ± 2.33	2.65 ± 1.69	0.254d
60th min	3.31 ± 2.21b,c	2.11 ± 0.95a	1.94 ± 1.62a	0.007d,f
p	0.687e	0.001e,g	0.033e,g

Difference with the control group is statistically significant.

Difference with the preoperative music group is statistically significant.

Difference with the preoperative + perioperative music group is statistically significant.

One-Way Anova.

Repeated measures Anova; α = 0.05.

Intergroup difference is statistically significant.

Difference between the repeated measurements is statistically significant; post hoc: Tukey's HSD test; Tamhane's T2 test; Dunnett's test.

Regarding the hemodynamic parameters, the SBP values at the 1st and 10th minute (p = 0.002 and p = 0.049, respectively), the DBP value at the 1st minute (p = 0.007), the MAP value at the 1st minute (p = 0.002), and the HR values at the 1st, 3rd, 5th, and 7th minutes (p < 0.001, p = 0.006, p = 0.008, and p = 0.032, respectively) were found to be significantly higher in Group PM than in Group NM (Table 5). No statistically significant differences in SpO2 were noted between the groups (p = 0.138).

Table 5

Comparisons of the perioperative heart rate measurements among the study groups.

	Control (n = 31)	Preoperative music (n = 31)	Preoperative + perioperative music (n = 31)	p
	Mean ± SD	Mean ± SD	Mean ± SD
1st min	81.33 ± 13.18b	96.32 ± 16.95a,c	82.92 ± 12.72b	<0.001d, f
3rd min	75.42 ± 12.60b	83.05 ± 14.91a,c	73.73 ± 11.10b	0.006d,f
5th min	70.61 ± 13.15b	78.59 ± 11.52a,c	71.67 ± 9.91b	0.008d,f
7th min	71.00 ± 12.24	76.43 ± 12.08c	69.50 ± 9.62b	0.032d,f
10th min	69.65 ± 12.25	73.43 ± 13.03	66.81 ± 8.56	0.168d
15th min	79.50 ± 7.19	77.20 ± 9.38	68.67 ± 6.66	0.254d
p	0.002e,g	<0.001e,g	<0.001e,g

Difference with the control group is statistically significant.

Difference with the preoperative music group is statistically significant.

Difference with the preoperative + perioperative music group is statistically significant.

One-Way Anova.

Repeated measures Anova; α = 0.05.

Intergroup difference is statistically significant.

Difference between the repeated measurements is statistically significant; post hoc: Tukey's HSD test; Tamhane's T2 test; Dunnett's test.

The postoperative blood GPX values were significantly higher in Groups PM and CM than in Group NM (p = 0.001) (Table 6). The differences between the pre- and postoperative GPX values in Groups NM and CM were significant, and compared with the preoperative value, the postoperative value was higher in Group CM and lower in Group NM.

Table 6

Comparisons of the pre- and postoperative oxidative stress parameters among the study groups.

	Control (n = 31)	Preoperative music (n = 31)	Preoperative music + perioperative music (n = 31)	p
	Median (min–max)	Median (min–max)	Median (min–max)
GPX
Pre	0.036 (0.006–0.061)	0.039 (0.000–0.066)	0.037 (0.011–0.071)	0.365d
Post	0.030 (0.013–0.049)b,c	0.039 (0.016–0.059)a	0.043 (0.010–0.061)a	0.001d,f
p	0.041e,g	0.952e	0.049e,g
CAT
Pre	1.514 (0.352–12.038)b,c	4.576 (0.493–19.642)a,c	3.098 (0.704–70.400)a,b	0.008d,f
Post	1.126 (0.000–12.883)b,c	2.957 (0.563–21.120)a,c	1.971 (0.422–9.856)a,b	<0.001d,f
p	0.983e	0.665e	0.006e,g
MDA
Pre	5.050 (0.790–12.960)b,c	3.745 (1.780–5.970)a	4.150 (0.000–6.210)a	<0.001d,f
Post	3.885 (1.470–36.650)b	3.150 (0.320–10.620)a	3.430 (2.500–36.160)	<0.001d,f
p	0.076e	0.006e,g	0.544e
NO
Pre	0.432 (0.034–3.936)b	1.104 (0.192–3.600)a,c	0.456 (0.192–2.208)b	<0.001d,f
Post	0.720 (0.384–2.016)c	0.672 (0.240–2.256)c	0.432 (0.240–1.008)a,b	<0.001d,f
p	0.006e,g	0.001e,g	0.980e

GPX, Glutathione Peroxidase (u.mL−1); CAT, Catalase (u.mL−1); MDA, Malondialdehyde (nmoL.mL−1); NO, Nitric Oxide (μmoL.L−1).

Difference with the control group is statistically significant.

Difference with the preoperative music group is statistically significant.

Difference with the preoperative music + perioperative music group is statistically significant.

Kruskal–Wallis H test; post hoc: Dunn's test.

Wilcoxon sign test; α = 0.05.

Difference is statistically significant.

Pre-post difference is statistically significant.

The postoperative CAT values were significantly higher in Groups PM and CM than in Group NM (p = 0.008 and p < 0.001, respectively). The difference between the pre- and postoperative CAT values in Group CM was significant, and the postoperative value was lower than the preoperative value in this group (p = 0.006) (Table 6).

The preoperative MDA values were significantly lower in Groups PM and CM than in Group NM (both p < 0.001). The difference between the pre- and postoperative MDA values in Group PM was significant, and the postoperative value was lower than the preoperative value in this group (p = 0.006) (Table 6).

The preoperative NO values were higher in Groups PM and CM than in Group NM (p < 0.001), whereas the postoperative NO values were lower in Groups PM and CM than in Group NM (p < 0.001). The differences between the pre- and postoperative NO values in Groups NM and PM were significant, and compared with the preoperative values, the postoperative values were lower in Group PM and higher in Group NM (p = 0.006 and p = 0.001, respectively) (Table 6).

Regarding the follicular fluid, detected no statistically significant difference in any of the groups in terms of the CAT, GPX, MDA, and NO values.

Discussion

In this study, we investigated the effects of the Acemasiran mode of Turkish classical music on pain and OS in oocyte pick-up patients. There were fewer body movements in the patients in Groups PM and CM, who were the patients who listened to music, than in the patients in Group NM; therefore, the patients in Groups PM and CM needed less additional analgesic and/or anesthetic drugs, and the differences were significant. The amount of additional remifentanil required was significantly lower in Group CM than in Group NM. The amount of additional propofol required was significantly higher in Group PM than in Groups NM and CM. Additionally, the patient pain (VAS) scores at the 1st, 5th, and 60th postoperative minutes were significantly lower in Groups PM and CM than in Group NM. Moreover, the amount of additional analgesic used postoperatively was significantly lower in Groups PM and CM than in Group NM.

In one study, music significantly lowered not only the doses of the sedative and analgesic drugs required by patients undergoing colonoscopy but also the anxiety and pain scores of patients, while it increased the satisfaction scores and comfort of patients. Music therapy is a non-pharmacological, cheap, and non-invasive technique that can significantly increase patient satisfaction and decrease the pain and perioperative stress. In a study conducted in cesarean section patients who listened to music for 1 hour prior to surgery (consistent with the approach in the present study), postoperative tramadol consumption, total tramadol consumption, additional analgesic use, and all VAS scores were significantly reduced with music therapy. In a previous study, listening to music in the perioperative period reduced the need for midazolam in patients undergoing spinal anesthesia. Similarly, in a study conducted in burn patients, pain and anxiety were significantly lower and relaxation was higher in the music, massage, and music-plus-massage groups than in the control group, although there were no significant differences among the three study groups.

In our study, the Turkish classical music had effects on the SBP, DBP, MAP, and HR. During the operation, the SBP at the 1st and 10th minutes, DBP at the 1st minute, MAP at the 1st minute, and HR at the 1st, 3rd, 5th, and 7th minutes were significantly higher in Group PM than in Group NM. Music therapy had no effect on oxygen saturation. According to other studies, listening to Turkish classical music alone is beneficial for reducing SBP and DBP in hypertensive elderly patients. In a study conducted in preterm infants, lullabies significantly reduced the HR and respiration rate; however, there was no effect on oxygen saturation.

The Acemasiran mode of Turkish classical music used in this study is a genre that is believed to foster creativity and inspiration, revitalize stagnant thoughts and emotions, facilitate birth in pregnant women, help correct improper postures in intrauterine fetuses, relieve pain and spasms, add zest to life, and promote relaxation. We evaluated the changes in hemodynamic parameters that were related to the Acemasiran mode's ability to foster creativity and inspiration and revitalize stagnant thoughts and emotions.

The postoperative blood GPX values were higher in Groups PM and CM than in Group NM. In addition, in Group CM, the postoperative GPX value was higher than the preoperative value, whereas in Group NM, the postoperative value was lower than the preoperative value. Thus, music therapy can increase the antioxidant enzyme GPX, which inhibits the onset and development of lipid peroxidation. The postoperative CAT values were higher in Groups PM and CM than in Group NM. In addition, in Group CM, the postoperative CAT value was lower than the preoperative value. The postoperative CAT values changed in both groups that listened to music. The preoperative MDA values were lower in Groups PM and CM than in Group NM. In Group PM, the postoperative MDA value was lower than the preoperative value. MDA is a biochemical marker used as an indicator of lipid damage in tissues. Thus, music therapy decreased both preoperative and postoperative lipid peroxidation. The preoperative NO values were higher in Groups PM and CM than in Group NM. The postoperative NO values were lower in Groups PM and CM than in Group NM. Thus, music therapy can increase the preoperative NO values and decrease the postoperative values. A previous study showed that increased levels of peritoneal NO may be associated with endometriosis, its related infertility, and the pathogenesis of idiopathic infertility.

In our study, music not only reduced the need for operative and postoperative analgesics in oocyte pick-up patients but also lowered the postoperative pain scores. Furthermore, it increased the postoperative values of the antioxidant enzymes GPX and CAT and decreased the MDA and NO values.

Although many studies in the literature involve music therapy, no studies have assessed the effects of music therapy on OS. Our study is important because it is the first to investigate the effects of music therapy on OS.

Our study was a single center study. Music can have different effects in different cultures. These are limiting factors in our study.

In conclusion, Turkish classical music therapy (Acemasiran mode) has beneficial effects on pain and OS in oocyte pick-up patients. We believe that our results are valuable for the development of new studies on the use of local and cultural music in oocyte pick-up patients and in other clinical populations.

Conflicts of interest

The authors declare no conflicts of interest.