Clinical trials

This prospective observational study aims to evaluate the impact of operating room noise on bispectral index (BIS) and hemodynamic parameters in patients undergoing general anesthesia. Environmental noise in operating rooms, often overlooked, may influence anesthesia depth, patient safety, and physiological stability. A total of 70 adult patients (ASA I-II, 18-65 years, elective surgery under general anesthesia) will be enrolled at Başakşehir Çam and Sakura City Hospital. Patients will be categorized into two groups based on intraoperative average noise levels: noisy group (\>65 dB) and quiet group (\<55 dB). Noise levels will be measured every 10 minutes using a CEM DT-8850 sound level meter, BIS will be recorded every 10 minutes, and hemodynamic variables (systolic, diastolic, mean arterial pressure, and heart rate) will be recorded every 5 minutes. Primary outcome is the correlation between mean intraoperative noise levels (LAeq) and BIS values during the maintenance phase of anesthesia. Secondary outcomes include the relationship between noise characteristics (e.g., device-related, human-related, alarms, media) and hemodynamic stability, as well as surgical branch-related noise classifications (high, moderate, low). The study is non-interventional, with no additional risk to participants beyond standard clinical monitoring. Findings are expected to provide evidence on the role of environmental noise in anesthesia quality, inform operating room organization, and contribute to patient safety improvements.

This study compares the effects of adding an infiltration between the popliteal artery and capsule of the knee (iPACK) block to a continuous adductor canal block (CACB) versus continuous adductor canal block alone on postoperative analgesia, opioid consumption, early mobilization, and length of hospital stay in patients undergoing total knee arthroplasty. This is a prospective, randomized, double-blind study with 54 patients allocated 1:1 into two groups.

This study investigates whether the dose of vasopressor medications (drugs that maintain blood pressure in shock) affects gastric emptying during tube feeding in the intensive care unit (ICU). Critically ill patients receiving vasopressors often develop impaired gastric motility, which reduces the effectiveness of enteral nutrition and increases the risk of aspiration. Gastric emptying will be objectively measured using bedside point-of-care ultrasound - a safe, painless imaging method - at three time points: before feeding (T0), at 1 hour (T1), and at 2 hours (T2) after restarting enteral nutrition following a 2-hour fasting period. Patients will be stratified into three groups based on norepinephrine equivalent dose (NEQ): Group 1 (no vasopressor, NEQ=0), Group 2 (low-to-moderate dose, NEQ \>0 to \<0.3 μg/kg/min), and Group 3 (high dose, NEQ ≥0.3 μg/kg/min). The primary outcome is gastric emptying rate (GER = (T0 volume - T2 volume) / 2 hours). Gastroparesis is defined as GER ≤0 mL/hour. Secondary outcomes include antrum cross-sectional area, agreement between ultrasound and aspirated gastric residual volume (Bland-Altman analysis), and enteral nutrition intolerance incidence. A subgroup analysis by shock type (septic, cardiogenic, hypovolemic, obstructive) will also be performed. The study aims to identify the vasopressor dose threshold at which gastric emptying is significantly impaired, and to support the use of bedside gastric ultrasound as an objective, non-invasive monitoring tool for enteral nutrition management in the ICU.

Overactive bladder is a common condition that causes a frequent, urgent need to urinate and can significantly reduce quality of life. When other treatments do not work well enough, doctors can inject a medication called onabotulinumtoxinA (a form of botulinum toxin) into the bladder wall. This procedure is often done in the office and is effective, but it can cause pain and anxiety during the injection. Transcutaneous electrical nerve stimulation (TENS) is a non-invasive, drug-free method that uses mild electrical pulses delivered through pads placed on the skin. It is thought to reduce the sensation of pain and is already used to help with discomfort during some office procedures. The purpose of this study is to find out whether applying TENS to the front of the lower legs (the pretibial area) reduces pain and anxiety in patients undergoing an intravesical onabotulinumtoxinA injection. Participants will be randomly assigned to one of two groups. In one group, the TENS device will be turned on (active). In the other group, the pads will be placed in the same location but the device will not be turned on (placebo). Neither the patient nor the doctor performing the assessment will know which group the patient is in. Pain will be measured during the procedure using a visual analog scale. Anxiety will be measured before the procedure using a standard questionnaire, and patient satisfaction will be measured afterward. The study aims to enroll 68 participants in total.

Hip fracture surgery is associated with significant postoperative pain and increased opioid requirements. Regional anesthesia techniques may improve analgesia and reduce opioid consumption. This prospective, randomized, double-blind, controlled trial aims to compare the postoperative analgesic efficacy of Quadro-Iliac Plane Block (QIPB), Suprainguinal Fascia Iliaca Block (SIFIB), and standard analgesia in patients undergoing hip fracture surgery under spinal anesthesia. The primary outcome is cumulative tramadol consumption during the first 24 postoperative hours. Secondary outcome measures include postoperative pain intensity, rescue analgesic requirement, incidence of postoperative nausea and vomiting, Quality of Recovery-15 (QoR-15) score, and patient satisfaction score.

The goal of this observational study is to learn whether the size and shape of the prostatic urethra and seminal vesicles - measured on multiparametric prostate MRI (mpMRI) - are related to premature ejaculation (PE) severity in men aged 18-55. The main questions it aims to answer are: * Do men with premature ejaculation have different prostatic urethral length and angulation compared to men without PE? * Do men with premature ejaculation have different seminal vesicle dimensions compared to men without PE? * Do prostatic urethra and seminal vesicle measurements on mpMRI correlate with PE severity scores (PEDT) and ejaculation latency time (IELT)? Researchers will compare men with premature ejaculation to healthy men without ejaculatory complaints to see if specific anatomical features are associated with PE severity. Participants will: * Undergo a multiparametric prostate MRI that is already scheduled as part of their routine medical care * Complete validated questionnaires about ejaculation and sexual function (PEDT, PEP, IELT, IIEF-15) * Provide a blood sample for routine hormone level measurements

This prospective study aims to evaluate the feasibility and diagnostic performance of sentinel lymph node (SLN) mapping using indocyanine green (ICG) in patients undergoing surgery for early-stage epithelial ovarian cancer. Ovarian cancer is the most lethal gynecologic malignancy, and although systematic pelvic and paraaortic lymphadenectomy is considered a standard component of surgical staging. Moreover, systematic lymphadenectomy is associated with increased operative time, perioperative morbidity, and long-term complications such as lymphedema, without clear evidence of therapeutic benefit. SLN mapping has been successfully implemented in other gynecologic malignancies and may provide a less invasive alternative for lymph node assessment. In this study, patients undergoing laparotomy for adnexal masses will receive intraoperative ICG injection into the infundibulopelvic ligament on the affected side and into the cervix (at the 3 and 9 o'clock positions) following intraoperative confirmation of malignant epithelial tumor by frozen section analysis. SLN detection rates, anatomical distribution, and feasibility will be assessed. In addition, intraoperative and postoperative outcomes and potential complications related to the procedure will be evaluated. The results of this study are expected to contribute to the current evidence regarding the role of SLN mapping in early-stage epithelial ovarian cancer and may help reduce the need for systematic lymphadenectomy and its associated morbidity.

This prospective randomized comparative study aims to compare the analgesic efficacy of pericapsular nerve group block (PENG) and lumbar erector spinae plane block (L-ESP) groups to relieve postoperative pain in participants over the age of 18 undergoing total hip arthroplasty under spinal anesthesia. The main question it aims to answer is: To demonstrate whether PENG block or L-ESP block is more effective in postoperative analgesia in patients undergoing total hip arthroplasty surgery based on pain scores, opioid consumption, and patient satisfaction. Total hip arthroplasties cause severe pain with movement in the postoperative period. After surgery, the movements of the participants are severely restricted, which increases the possibility of complications. In this study, the participants' pain status, VAS score, opioid consumption through patient-controlled analgesia, and patient satisfaction will be measured with a questionnaire for 24 hours at predetermined time points and then compared. Both types of blocks have pain-relieving effects. This study will only investigate which one is more effective in reducing pain, and there will be no deficiency in relieving the pain of the participants.

Oxygen administration is essential in the perioperative period to prevent hypoxia; however, excessive oxygen may cause hyperoxia and related complications. While pulse oximetry is effective in detecting hypoxemia, it is insufficient for identifying hyperoxia when SpO₂ exceeds 97%, often necessitating invasive arterial blood gas analysis. The Oxygen Reserve Index (ORI) is a noninvasive, real-time monitoring parameter reflecting moderate hyperoxic ranges (PaO₂ 100-200 mmHg) and provides early warning of oxygenation changes before SpO₂ alterations occur. Combined use of ORI and pulse oximetry may enable optimal oxygen titration and prevention of both hypoxemia and hyperoxemia. Laparoscopic nephrectomy is widely performed due to its clinical advantages. In our practice, low and normal fresh gas flow anesthesia are commonly used. Low-flow anesthesia offers benefits such as preservation of heat and humidity, reduced cost, and improved airway physiology. This study aims to determine optimal oxygenation levels during laparoscopic nephrectomy under low and normal fresh gas flow conditions using ORI monitoring.

This randomized clinical trial investigates the impact of two different skin closure techniques on body image and mood in women undergoing surgery for gynecologic cancers. Patients undergoing elective surgery with a midline abdominal incision will be randomly assigned to one of two groups: 1. Interrupted Closure Group: The surgical incision is closed using either metal clips (staples) or separate mattress sutures (individual stitches). 2. Subcuticular Sutures Group: The surgical incision is closed using continuous stitches placed under the skin surface (aesthetic stitching). The main goal of the study is to determine whether the method of wound closure affects a patient's perception of their body image, cosmetic satisfaction, and levels of anxiety or depression. Additionally, the study aims to prove that the subcuticular suture technique is safe and does not increase the risk of wound complications (such as infection or wound separation) compared to the other method. Participants will be asked to complete questionnaires before surgery, and again at 1, 3 and 6 months after surgery to track changes in their feelings and satisfaction with the scar.

The aim of this study is to evaluate the effect of white noise applied during invasive procedures (blood sampling or intravenous access) on pain and physical parameters in infants aged 1-3 months.

This is a prospective observational study.The purpose of this study is to predict difficult intubation with ultrasonographic evaluation combined with preoperative physical examination in patients diagnosed with acromegaly and planned for pituitary surgery.

This multicenter, prospective cohort study aims to identify clinical and demographic predictors that influence the success of greater occipital nerve (GON) block in patients with migraine. Patients will be evaluated at baseline, on each injection day, and at one- and three-month follow-ups. Study parameters include demographics, migraine type and duration, comorbidities, headache characteristics, treatment history, and validated outcome measures such as the Numeric Rating Scale (NRS), Headache Impact Test-6 (HIT-6), and Global Rating of Change (GRoC). The goal is to establish predictive factors of treatment success in order to optimize patient selection and contribute robust multicenter evidence to individualized migraine management

This multi-center, nationwide study aims to evaluate the validity and reliability of the Turkish version of the Headache Screening Questionnaire (HSQ-TR). The 10-item questionnaire is designed to screen for migraine and tension-type headache in individuals with headache complaints. Participants presenting with headache will be enrolled. Each participant will first complete the HSQ-TR and then be examined by a neurologist who will provide a diagnosis according to the ICHD-3 beta criteria. The questionnaire results will be compared with the neurologist's diagnoses to assess criterion validity, including sensitivity, specificity, and agreement.

This prospective randomized study aims to compare the analgesic efficacy of Adductor Canal Block (ACB) and Genicular Nerve Block (GNB) groups to relieve postoperative pain in participants between ages of 18-72 undergoing arthroscopic knee surgery under spinal anesthesia. The main question it aims to answer is: To demonstrate whether Adductor Canal Block or Genicular Nerve Block is more effective in postoperative analgesia in patients undergoing arthroscopic knee surgery based on pain scores, opioid consumption and patient satisfaction. Arthroscopic knee surgeries cause severe pain especially with movement in the post-operative period. After surgery, the movements of the participants are severely restricted because of pain, which increases the possibility of complications and postpones post-operative knee exercises. In this study, the participants' pain status, VAS score, opioid consumption and patient satisfaction will be measured with a simple scoring system for 24 hours at predetermined time points and then compared. Both types of blocks have pain-relieving effects. This study will only investigate which one is more effective in reducing pain, and there will be no deficiency in relieving the pain of the participants.

The study is a multicentric prospective randomised cross-over study. It evaluates the compatibility of patients with the device without altering the routine treatment applied. During this evaluation, either the clinician-adjusted values on the device or the standard pre-set values are used to obtain hourly and 30-minute PVA (Patient Ventilator Asynchrony) recordings. These recordings will be analysed offline to identify the settings used and to compare the hourly and 30-minute PVA (Patient Ventilator Asynchrony) values when synchronisation is automatically set. The relationships and differences between these values will be analysed. For this purpose, the IntelliSync+ option, already available on the device, will be used. This software continuously analyses waveform signals at least a hundred times per second. This allows for the immediate detection of patient efforts and the initiation of inspiration and expiration in real time, thereby replacing traditional trigger settings for inspiration and expiration. If the patient is already synchronised with this option, it will then be possible to switch to traditional synchronisation settings for comparison. Statistical analyses will be conducted using SPSS 24.0, JASP (Just Another Statistical Programme), Jamovi ( fork of JASP), or R software. Initially, all numerical and categorical data will be evaluated using descriptive statistical methods. The distributions of numerical variables will be examined using visual (histograms and probability plots) and analytical methods (Kolmogorov-Smirnov/Shapiro-Wilk tests). Mean/SD (standard deviation) or median/interquartile range (IQR) will be used as measures of distribution. For comparing numerical data that follows a normal distribution, the Student-t test will be used, and for non-normally distributed data, the Mann-Whitney U or Wilcoxon signed-rank tests will be employed. PVA (Patient Ventilator Asynchrony) values will be statistically compared. For the analysis of categorical data, the Chi-Square test will be applied. Bayesian analysis may also be used as necessary during the writing of the study. The results obtained will be interpreted and reported by the researchers. Results with a "p" value below 0.05 will be considered statistically significant.

The aim of this study is to evaluate feasibility, reliability and short term effectiveness of ganglion impar block with ultrasound in patients with chronic coccygodinia.

Coccygodynia is a condition that causes pain in the tailbone (coccyx) area. While it can develop after trauma, such as a fall or fracture, in some cases, no clear cause is identified. Patients who do not experience relief from standard treatments like pain medications, physical therapy, and posture adjustments may be referred to specialized pain management clinics for further treatment options. Several interventional procedures can help manage coccygodynia. These include impar ganglion block, radiofrequency ablation, caudal epidural steroid injections, sacral erector spinae plane (ESP) block, and coccygeal nerve blocks. These procedures are commonly performed in pain treatment centers and aim to reduce discomfort by targeting specific nerves responsible for transmitting pain signals. Impar ganglion block is one of the most frequently used treatments for coccygodynia. It involves injecting a local anesthetic, with or without steroids, into a small nerve cluster in front of the sacrococcygeal joint. This procedure is performed under ultrasound and/or fluoroscopic (X-ray) guidance in a sterile operating room setting to ensure accuracy and safety. While the goal is to relieve pain, potential risks include temporary worsening of pain, bleeding, infection, or, in rare cases, rectal injury. Another interventional option is the sacral erector spinae plane (ESP) block, a technique that delivers local anesthetic under the erector spinae muscles in the sacrum. This procedure, also performed under ultrasound guidance in a sterile environment, is used to block pain signals from the coccyx and surrounding areas. Like the impar ganglion block, it can be effective for pain relief, but possible side effects include temporary pain increase, bleeding, and infection at the injection site. Both procedures are minimally invasive.

This study aims to adapt, validate, and assess the reliability of the Geriatric Pain Measure - Short Form in Turkish. A total of 150 patients aged 65 years and older will complete the scale under the supervision of pain management and gerontology specialists. Reliability and validity will be evaluated using statistical analyses, including internal consistency, test-retest reliability, and correlation with validated pain and sleep scales. Ethical approval has been obtained, and all participants will provide informed consent.

Trigeminal neuralgia is common painful disorder in pain medicine clinics. Gasserian ganglion radiofrequency thermocoagulation is one of the treatment option in patients with trigeminal neuralgia in refractory cases. The most commonly involved branch in trigeminal neuralgia is the mandibular branch. Masseter muscle is innervated by mandibulary nerve branch of the trigeminal nerve. The radiofrequency thermocoagulation therapy is used to ablate the affected trigeminal nerve branch and some of patients complain of subjective masseter weakness after this procedure. In theoretical basis, muscles innervated by target nerve are affected from ablation procedure. In this study the primary aim is to evaluate the change of the masseter muscle thickness in patients treated by gasserian ganglion radiofrequency thermocoagulation. The results may also show possible functional effect of the procedure related with masseter muscle.

High flow nasal oxygen therapy (HFNO) is an established modality in the supportive treatment of patients suffering from acute hypoxemic respiratory failure. The high humidified gas flow supports patient's work of breathing, reduces dead space ventilation, and improves functional residual capacity while using an unobtrusive patient's face interface \[Mauri et al, 2017; Möller et al, 2017\]. As hyperoxia is considered not desirable \[Barbateskovic et al, 2019\] during any oxygen therapy, the inspired O2 concentration is usually adapted to a pre-set SpO2 target-range of 92-96% in patients without hypercapnia risk, and of 88-92% if a risk of hypercapnia is present \[O'Driscoll et al, 2017; Beasley et al, 2015\]. In most institutions, the standard of care is to manually adapt the FiO2, although patients frequently have a SpO2 value outside the target range. A new closed loop oxygen controller designed for HFNO was recently developed (Hamilton Medical, Bonaduz, Switzerland). The clinician sets SpO2 targets, and the software option adjusts FiO2 to keep SpO2 within the target ranges. The software option offers some alarms on low and high SpO2 and high FiO2. Given the capability, on the one hand, to quickly increase FiO2 in patients developing sudden and profound hypoxia, and, on the other hand, of automatically preventing hyperoxia in patients improving their oxygenation, such a system could be particularly useful in patients treated with HFNO. A short-term (4 hours vs 4 hours) crossover study indicated that this technique improves the time spent within SpO2 pre-defined target for ICU patients receiving high-flow nasal oxygen therapy \[Roca et al, 2022\]. Due to its simplicity, HFNO is increasingly used outside the ICU during transport and in the Emergency Room (ER). This environment poses specific challenges, as patients may deteriorate very quickly and depending on patient's flow, healthcare providers can easily be overwhelmed. We thus propose to evaluate closed loop controlled HFNO in ER patients. The hypothesis of the study is that closed loop oxygen control increases the time spent within clinically targeted SpO2 ranges and decreases the time spent outside clinical target SpO2 ranges as compared to manual oxygen control in ER patients treated with HFNO.

we aim to evaluate the success of intraoperative transrectal ultrasound in measuring the depth and extent of bowel involvement in patients preoperatively diagnosed with intestinal endometriosis using transvaginal ultrasound and MRI, and who are planned for bowel resection

The main purpose of this study is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period. The secondary aim of the study is to examine the relationship between optic nerve sheath diameter measurement and other routinely used perioperative follow-up parameters in terms of predicting neurological problems.

Relieving postoperative nephrectomy pain requires multimodal approaches. Peripheral blocks such as ESP block and M-TAPA block and multimodal analgesics reduce side effects by reducing the use of other analgesics. This study aimed to compare the effectiveness of erector spinae plane block (ESP block) and modified thoracoabdominal nerve blocking with perichondrial approach (M-TAPA block) in postoperative analgesia management in nephrectomy cases.

In this study, the effect of increased venous return and increased intra-abdominal pressure on intracranial pressure in the lithotomy position was evaluated.