[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"thoracic-anesthesia\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:thoracic-anesthesia":29},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,6,0,[8,55,86,113,143,170],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":4,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":23,"briefSummary":25,"conditions":26,"keywords":34,"overallStatus":42,"whyStopped":4,"lastUpdateSubmitDate":43,"lastUpdatePostDateStruct":44,"startDateStruct":47,"completionDateStruct":49,"leadSponsor":51,"locationsCount":54},"100641870","brief-bronchial-suction-for-lung-collapse-during-uniportal-vats-100641870",false,"NCT07660588","Brief Bronchial Suction for Lung Collapse During Uniportal VATS","Effect of Brief Bronchial Suction on the Quality of Non-Ventilated Lung Collapse and Time to Adequate Surgical Exposure During Uniportal Video-Assisted Thoracoscopic Surgery: a Randomized Patient- and Surgeon-Blinded Trial","Inclusion Criteria:\n\n* Age ≥ 18 years old\n* BMI ≤ 35 kg\u002Fm2\n* American Society of Anesthesiologists (ASA) physical status I to III\n* Scheduled for elective single-port video-assisted thoracoscopic surgery (VATS) at Siriraj Hospital\n* Requirement for one-lung ventilation using a double-lumen tube (DLT)\n* Surgery performed in the lateral decubitus position\n* Ability to provide written informed consent\n\nExclusion Criteria:\n\n* Previous thoracic surgery\n* Known or suspected severe pleural adhesions based on preoperative imaging or clinical history\n* Tracheobronchial anatomical abnormalities\n* Pulmonary bullae identified on chest radiography or computed tomography, or a history of recurrent pneumothorax\n* Forced vital capacity (FVC) \\\u003C 50% of predicted\n* Pregnancy",true,"ALL","18 Years",{"count":20,"type":21},100,"ESTIMATED","INTERVENTIONAL",[24],"NA","The goal of this clinical trial is to learn whether a brief suction of the airway going to the surgical lung (bronchus) can help the lung collapse faster and more completely during uniportal video-assisted thoracoscopic surgery (UVATS). This type of surgery is performed through a small incision in the chest, and good lung collapse helps the surgeon see and work safely. The main questions it aims to answer are\n\n1. Does brief bronchial suction improve the quality of lung collapse 1 minute after chest cavity is opened?\n2. Does brief bronchial suction help reach satisfactory lung collapse faster?\n\nResearchers will compare patients who receive brief bronchial suction and those who do not. This is to see if suction improves and fastens lung collapse, reduce the need for additional steps if lung is not adequately collapsed, affect inflammation, oxygenation, postoperative pulmonary complications, operative time, and the duration of one-lung ventilation. Participants will\n\n1. Undergo UVATS under general anesthesia\n2. Have a double-lumen breathing tube placed as part of the standard anesthetic care\n3. Be randomly assigned to either receive bronchial suction for one minute or receive no bronchial suction\n4. Have the surgical team assess the quality of lung collapse at different time points\n5. Have blood samples taken for interleukin-6, a marker related to inflammation, once during and once after surgery. These samples are collected through a small tube in a vein that is placed as a standard anesthetic care while the participant is under general anesthesia. No extra puncture is required for blood collection.\n6. Have information collected from the routine anesthesia and surgical records such as oxygen levels during surgery, length of surgery and lung-related complications within 7 days after surgery",[27,28,29,30,31,32,33],"Lung Collapse","One-lung Ventilation","Thoracic Anesthesia","Thoracic Surgery, Video-assisted","Double-lumen Tube","Uniportal Video Assisted Thoracic Surgery (U-VATS)","Postoperative Pulmonary Complications",[35,36,37,38,39,40,41],"uniportal VATS","UVATS","bronchial suction","lung collapse","one-lung ventilation","double-lumen tube","thoracic anesthesia","NOT_YET_RECRUITING","2026-06-16",{"date":45,"type":46},"2026-06-22","ACTUAL",{"date":48,"type":21},"2026-08",{"date":50,"type":21},"2028-07",{"name":52,"class":53},"Mahidol University","OTHER",1,{"id":56,"slug":57,"hasResults":11,"nctId":58,"briefTitle":59,"officialTitle":60,"acronym":4,"eligibilityCriteria":61,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":62,"enrollmentInfo":63,"targetDuration":4,"studyType":22,"phases":65,"briefSummary":66,"conditions":67,"keywords":70,"overallStatus":76,"whyStopped":4,"lastUpdateSubmitDate":77,"lastUpdatePostDateStruct":78,"startDateStruct":80,"completionDateStruct":82,"leadSponsor":84,"locationsCount":54},"100634470","serratus-posterior-superior-intercostal-plane-block-versus-intrathecal-morphine-in-vats-100634470","NCT07540104","Serratus Posterior Superior Intercostal Plane Block Versus Intrathecal Morphine in VATs","Comparison of the Effects of Serratus Posterior Superior Intercostal Plane Block and Intrathecal Morphine on Postoperative Acute Pain in Patients Undergoing Video-assisted Thoracoscopic Surgery","Inclusion Criteria:\n\n* Age between 18 and 75 years\n* American Society of Anesthesiologists physical status I to III\n* Scheduled for elective video-assisted thoracoscopic surgery including wedge resection, segmentectomy, or lobectomy\n\nExclusion Criteria:\n\n* Refusal to participate\n* Pregnancy\n* Morbid obesity (body mass index greater than 40 kg per square meter)\n* Allergy to opioids, local anesthetics, or nonsteroidal anti-inflammatory drugs\n* Neuropsychiatric disorders, cognitive impairment, or inability to communicate\n* History of substance abuse\n* Use of anticoagulant therapy or presence of bleeding disorders\n* Active systemic infection\n* Severe cardiovascular, hepatic, renal, or endocrine disease\n* Chronic pain syndrome or ongoing chronic pain treatment\n* Emergency surgery or prior ipsilateral thoracic surgery\n* Preoperative opioid use\n* Significant intraoperative or postoperative bleeding or hemodynamic instability\n* Requirement for prolonged postoperative mechanical ventilation longer than 18 hours","75 Years",{"count":64,"type":21},60,[24],"This study aims to compare the analgesic effects of the serratus posterior superior intercostal plane block and intrathecal morphine in patients undergoing video-assisted thoracoscopic surgery.\n\nThis is a prospective, randomized, controlled, single-center clinical trial including adult patients undergoing elective thoracoscopic surgery. Participants will be randomly assigned to receive either a serratus posterior superior intercostal plane block or intrathecal morphine before general anesthesia.\n\nThe primary outcome is cumulative opioid consumption during the first 24 postoperative hours, expressed as intravenous morphine milligram equivalents. Secondary outcomes include pain scores, time to first analgesic request, quality of recovery, and postoperative complications.\n\nThe study aims to determine whether these two techniques differ in their effectiveness for postoperative pain management.",[29,68,69],"Postoperative Pain","Video Assisted Thoracic Surgery (VATS)",[71,72,73,74,75],"Thoracic Surgery, Video-Assisted","Analgesia, Postoperative","Morphine","Injections, Spinal","Nerve Block","RECRUITING","2026-04-28",{"date":79,"type":46},"2026-05-04",{"date":81,"type":21},"2026-04-15",{"date":83,"type":21},"2026-09-30",{"name":85,"class":53},"Ondokuz Mayıs University",{"id":87,"slug":88,"hasResults":11,"nctId":89,"briefTitle":90,"officialTitle":91,"acronym":92,"eligibilityCriteria":93,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":4,"enrollmentInfo":94,"targetDuration":4,"studyType":96,"phases":4,"briefSummary":97,"conditions":98,"keywords":100,"overallStatus":42,"whyStopped":4,"lastUpdateSubmitDate":104,"lastUpdatePostDateStruct":105,"startDateStruct":107,"completionDateStruct":109,"leadSponsor":111,"locationsCount":4},"100620143","mechanical-power-in-one-lung-ventilation-100620143","NCT07353788","Mechanical Power in One-lung Ventilation","Postoperative Complications and Outcomes Related to Mechanical Power in One-lung Ventilation- A Multicentre Observational Study","POWEROL","Inclusion Criteria:\n\n1. Patients aged 18 years or older,\n2. ASA physical status I-IV\n3. All thoracic surgeries\n4. One lung ventilation period \\>1 hour\n5. Patients capable of giving written informed consent\n\nExclusion Criteria:\n\n1-Patients undergoing cardiac surgery",{"count":95,"type":21},300,"OBSERVATIONAL","Thoracic surgery usually necessitates one-lung ventilation (OLV) to provide surgical access while maintaining adequate gas exchange. However, OLV is associated with an increased risk of PPCs , a major cause of morbidity and mortality. Mechanical power, a composite parameter incorporating tidal volume, respiratory rate, driving pressure, and flow resistance, has been proposed as a key factor influencing ventilator-induced lung injury (VILI) and postoperative outcome. Understanding the association between mechanical power during OLV and PPCs could provide insights for optimizing intraoperative ventilatory strategies and reducing the burden of PPCs. As OLV inherently alters normal lung mechanics by decreasing functional residual capacity and introducing inequalities in ventilation-perfusion ratio, the complexity of managing mechanical power becomes even more pronounced. Under these altered conditions, the risk of PPC-including atelectasis, pneumonia, and respiratory failure-can be significantly elevated. Factors such as ventilatory settings, lung protection strategies, and the duration of OLV play pivotal roles in influencing mechanical power delivery and thereby impacting lung function recovery post-surgery. Current literature indicates a correlation between inappropriate mechanical ventilation strategies during OLV and increased incidence of PPCs. However, there remains a gap in understanding how precisely mechanical power, as a quantifiable measure, influences patient outcomes following OLV. Therefore, this study aims to investigate the relationship between mechanical power during OLV and the subsequent risk of PPC. By elucidating these dynamics, the findings may inform clinical practices surrounding OLV management, ultimately improving patient safety and outcomes in thoracic surgery.",[29,99],"Thoracotomy Surgery",[101,102,103],"one lung ventilation","mechanical power","postoperative pulmonary complications","2026-01-19",{"date":106,"type":46},"2026-01-20",{"date":108,"type":21},"2026-02-01",{"date":110,"type":21},"2026-12-01",{"name":112,"class":53},"Ankara University",{"id":114,"slug":115,"hasResults":11,"nctId":116,"briefTitle":117,"officialTitle":118,"acronym":4,"eligibilityCriteria":119,"healthyVolunteers":11,"sex":17,"minAge":120,"maxAge":4,"enrollmentInfo":121,"targetDuration":4,"studyType":96,"phases":4,"briefSummary":123,"conditions":124,"keywords":129,"overallStatus":42,"whyStopped":4,"lastUpdateSubmitDate":134,"lastUpdatePostDateStruct":135,"startDateStruct":137,"completionDateStruct":138,"leadSponsor":140,"locationsCount":54},"100619015","the-effect-of-single-lung-ventilation-duration-and-intraoperative-brain-oxygenation-on-cognitive-function-and-postoperative-pain-in-geriatric-patients-100619015","NCT07339124","The Effect of Single Lung Ventilation Duration and Intraoperative Brain Oxygenation on Cognitive Function and Postoperative Pain in Geriatric Patients","The Effect of Single Lung Ventilation Duration and Intraoperative Brain Oxygenation on Cognitive Function and Postoperative Pain in Geriatric Patients Undergoing Single Lung Ventilation; Prospective Observational Study","Inclusion Criteria:\n\n* Patients aged 65 and over with a high school diploma or higher education\n* Patients undergoing lung resection via thoracotomy (wedge resection, lingulectomy, segmentectomy, lobectomy, pneumonectomy)\n* American Society of Anesthesiologists (ASA) score I-II-III,\n* Body mass index (BMI) between 18-40 kg\u002Fm2,\n* Patients undergoing surgery under general anesthesia will be included in the study.\n\nExclusion Criteria:\n\n* Patients under 65 years of age, patients over 65 who are illiterate,\n* Who have completed primary or secondary school,\n* Patients with pre-existing cognitive impairment confirmed by preoperative Mini Mental State Examination (MMSE),\n* Patients with a history of previously diagnosed mental illness, cerebrovascular disease, senile dementia, stroke,\n* Patients using continuous anti-inflammatory\u002Fanalgesic medications,\n* Patients with preoperative chronic pain,\n* Severe cardiovascular disease,\n* Diagnosed neurological and psychiatric diseases,\n* Patients allergic to the anesthetic and analgesic drugs to be administered,\n* Patients with severe renal failure, gastrointestinal ulceration or severe asthma that prevents the administration of standard analgesia protocols,\n* Patients undergoing surgery other than lung resection,\n* Patients undergoing surgery with TIVA (total intravenous anesthesia) will be excluded from the study.","65 Years",{"count":122,"type":21},30,"One lung ventilation (OLV) is commonly used in thoracic surgery. Although the lack of ventilation of the lung in the surgical area (independent lung) during OLV redirects pulmonary blood flow to the dependent lung, shunt development is inevitable, and consequently, hypoxia is a frequently encountered condition. Therefore, one of the most important aspects that clinicians pay attention to during OLV is cerebral oxygen saturation in addition to peripheral oxygenation monitoring.\n\nStudies have shown a correlation between decreased cerebral oxygen saturation and postoperative cognitive dysfunction (POCD). Patients undergoing OLV are also at risk of cerebral desaturation due to this non-physiological ventilation.\n\nPatients undergoing OLV are at risk of cerebral oxygen desaturation. Therefore, in these patients, both cognitive dysfunction and changes in brain oxygenation can negatively affect pain-related centers, altering pain perception. Geriatric patients are particularly more affected by these negative effects. It is generally accepted by healthcare professionals specializing in pain management that the application of pain management should differ for elderly patients compared to younger patients. Analgesic dose adjustment should be done more carefully in geriatric patients. Increased sensitivity to opioids due to hypoxia can cause respiratory depression and increased analgesic effects. To avoid these, opioid dose adjustment is necessary in these patients. In conclusion, cerebral oxygen saturation measurement can be an effective method to detect cerebral oxygen desaturation, especially in the geriatric patient group. In this way, the effect of hypoxia caused by OLV on cerebral oxygen saturation can be detected early, and POCD can be limited. We believe that this situation can also contribute to effective postoperative pain management. This study aimed to investigate the effect of intraoperative brain oxygenation on cognitive function and postoperative pain in geriatric patients who underwent OLV.\n\nMATERİAL AND METHODS This study will be conducted in accordance with the Helsinki Declaration and will take place at Health Sciences University Ankara Atatürk Sanatorium Training and Research Hospital . The study will be planned for geriatric patients over 65 years of age with a high school diploma or higher education level who have given informed consent and are scheduled for OLV with standard anesthesia monitoring. These patients, undergoing thoracic surgery via thoracotomy and who agree to participate in this study and sign an informed consent form, will be prospectively enrolled. A total of 30 patients will be included in our study. Preoperatively, patients will undergo standard monitoring including non-invasive arterial blood pressure, electrocardiography, and peripheral oxygen saturation (SpO2). Cerebral oxygenation of patients who have signed an informed consent form the day before will be recorded throughout the surgical procedure using probes placed on the forehead before the induction of anesthetic drugs.\n\nThe standard anesthesia and analgesia protocol that we routinely apply to patients will be applied throughout the surgery. Routine preoperative blood tests, age, height, weight, Body Mass Index (BMI), gender, diagnosis, preoperative comorbidities (hypertension, diabetes, coronary artery disease, chronic obstructive pulmonary disease, etc.), previous surgeries (any surgical procedure performed under general anesthesia before this study), American Society of Anesthesiologists ( ASA) score, and duration of surgery will be recorded for each patient. Hemodynamic data (systolic arterial pressure (SAP), diastolic arterial pressure (DAP), mean arterial pressure (MAP), pulse, SpO2, and cerebral oxygen saturation will be recorded before anesthesia induction, after induction, and at 5, 10, 20, 30, and 60 minutes after the start of OLV. These hemodynamic data will also be recorded at the end OLV and at the end of the operation. OLV duration, anesthesia duration, surgery duration, amount of fluid administered, urine output, and whether blood replacement was performed will be recorded. Visual Analog Scale (VAS) scores will be recorded at 1, 2, 4, 8, 16, and 24 hours postoperatively. Analgesic medications administered during the 24-hour postoperative period will also be recorded. VAS evaluation will be performed on a 100 mm scale, where 0: no pain and 100: maximum pain, indicating the patient's pain level. During this process, any possible side effects that may develop due to analgesic treatment will be recorded.\n\nThe Mini Mental Test (MMT) form will be completed by patients one day before surgery, 48 hours postoperatively, on the 7th day postoperatively. MMT consists of eleven items grouped under five main headings: Orientation, recording memory, attention and calculation, recall, and language, and is evaluated out of a total score of 30.",[29,125,126,127,128],"Geriatric Anesthesia","One Lung Ventillation (OLV)","POCD - Postoperative Cognitive Dysfunction","Postoperative Pain Management",[41,130,131,101,132,133],"geriatric patients","cognitive function","cerebral oxygenation","postoperative pain","2026-01-14",{"date":136,"type":46},"2026-01-15",{"date":136,"type":21},{"date":139,"type":21},"2026-10-30",{"name":141,"class":142},"Ankara Ataturk Sanatorium Training and Research Hospital","OTHER_GOV",{"id":144,"slug":145,"hasResults":11,"nctId":146,"briefTitle":147,"officialTitle":148,"acronym":4,"eligibilityCriteria":149,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":4,"enrollmentInfo":150,"targetDuration":4,"studyType":96,"phases":4,"briefSummary":152,"conditions":153,"keywords":157,"overallStatus":42,"whyStopped":4,"lastUpdateSubmitDate":162,"lastUpdatePostDateStruct":163,"startDateStruct":165,"completionDateStruct":167,"leadSponsor":169,"locationsCount":54},"100618302","opioid-consumption-after-thoracotomy-and-factors-affecting-postoperative-acute-pain-100618302","NCT07329855","Opioid Consumption After Thoracotomy and Factors Affecting Postoperative Acute Pain","Analysis of Opioid Consumption After Thoracotomy and Factors Affecting Postoperative Acute Pain","Inclusion Criteria:\n\n* Patients aged over 18 years\n* Patients scheduled for thoracotomy\n* Patients with an American Society of Anesthesiologists (ASA) physical status classification of I-III\n* Patients who have provided informed consent\n* Patients with a body mass index (BMI) between 18-40 kg\u002Fm²\n\nExclusion Criteria:\n\n* Patients with ASA class IV or higher\n* Patients younger than 18 years old\n* Patients with systemic inflammatory disease\n* Patients receiving continuous anti-inflammatory and\u002For analgesic medication\n* Patients with chronic preoperative pain\n* Pregnant patients\n* Outpatients who received anesthesia outside the operating room\n* Emergency cases\n* Patients who underwent VATS, sternotomy, mediastinoscopy, or tracheal resection\n* Patients with a history of previous thoracic surgery\n* Patients who had a thoracic epidural catheter inserted for postoperative pain management\n* Patients with a BMI \\\u003C18 or \\>40 kg\u002Fm²",{"count":151,"type":21},35,"Thoracic surgery operations constitute a significant portion of surgical procedures performed in hospitals. In the United States, more than 50,000 thoracic surgical procedures are performed annually, and more than 80% of these patients experience moderate to severe postoperative pain requiring opioid administration, which increases the risk of complications . It has also been reported that chronic pain develops in approximately 50% of patients after thoracic surgery .\n\nThoracic surgery is commonly associated with severe, multifactorial pain during the postoperative period and is among the surgical branches with a high risk of developing chronic pain Despite advances in understanding postoperative pain mechanisms and improvements in pain management, inadequate postoperative pain control remains an unresolved healthcare problem. Higher acute pain scores are associated with less effective ventilation and coughing, increased incidence of lower respiratory tract infections, and prolonged ICU and hospital stays .\n\nIn the management of acute postoperative pain after thoracic surgery, clinicians have sought alternatives to thoracic epidural analgesia to avoid its potential adverse effects. Truncal blocks such as thoracic paravertebral block, erector spinae plane block, and serratus anterior block have been used to reduce postoperative pain . Additionally, various other analgesic techniques such as patient-controlled analgesia (PCA) and multimodal analgesia have been employed. Historically, the cornerstone of acute postoperative pain control has been systemic opioids administered via oral, intravenous, or thoracic epidural routes . Although opioids provide excellent pain relief, they are associated with significant side effects that can adversely affect recovery .\n\nWith the increasing use of ultrasonography (USG), truncal blocks have become more widespread. Alongside the development of Enhanced Recovery After Thoracic Surgery (ERATS) protocols, efforts have been made to reduce opioid use, leading to differing opinions regarding the management of acute pain after thoracic surgery. To prevent opioid use disorder and potential side effects, opioid-free or opioid-sparing approaches are now being encouraged in perioperative pain management . Conversely, some studies suggest that intraoperative opioid administration may have favorable effects on postoperative acute and chronic pain. Previous research has reported that the average daily opioid consumption after thoracic surgery is approximately 30 morphine milligram equivalents (MME) .\n\nAlthough video-assisted thoracoscopic surgery (VATS) has become more common, thoracotomy cases still constitute a large proportion of thoracic surgery procedures. Moreover, severe postoperative pain after thoracic surgery is most commonly associated with the thoracotomy incision itself. While some studies have suggested that new truncal block techniques may provide effective analgesia and reduce opioid consumption after thoracotomy, further studies are needed to determine which blocks are most commonly preferred and how opioid consumption patterns have changed with the adoption of these newer regional techniques.\n\nA review of the current literature reveals that the factors influencing acute pain after thoracotomy have not been sufficiently evaluated. Therefore, a re-evaluation of the factors affecting acute pain following thoracotomy, considering recent developments in pain management, is necessary. Furthermore, examining the relationship between perioperative opioid consumption, postoperative complications, and hospital length of stay in this patient population will provide valuable contributions to the literature.\n\nThe aim of this study is to evaluate the amount of opioid consumption following thoracotomy and to investigate whether perioperative opioid use affects acute pain, postoperative complications, and the length of hospital stay.",[29,154,155,128,156],"Thoracotomy","Opioid","Length of Hospital Stay",[154,158,159,160,161],"opioid consumption","postoperative acute pain","postoperative complications","length of hospital stay","2026-01-09",{"date":164,"type":46},"2026-01-12",{"date":166,"type":21},"2026-01-05",{"date":168,"type":21},"2026-05-05",{"name":141,"class":142},{"id":171,"slug":172,"hasResults":11,"nctId":173,"briefTitle":174,"officialTitle":175,"acronym":4,"eligibilityCriteria":176,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":177,"enrollmentInfo":178,"targetDuration":4,"studyType":96,"phases":4,"briefSummary":179,"conditions":180,"keywords":182,"overallStatus":76,"whyStopped":4,"lastUpdateSubmitDate":188,"lastUpdatePostDateStruct":189,"startDateStruct":191,"completionDateStruct":192,"leadSponsor":194,"locationsCount":54},"100607626","the-role-of-existing-formulas-in-the-double-lumen-tube-in-thoracic-surgery-anesthesia-100607626","NCT07191002","The Role of Existing Formulas in the Double-lumen Tube in Thoracic Surgery Anesthesia","The Role of Existing Formulas and Airway Measurements in Determining the Appropriate Placement Depth of the Double-lumen Tube in Thoracic Surgery Anesthesia: a Prospective Observational Study","Inclusion Criteria:\n\n* Patients older than 18 and younger than 80 years\n* Patients who will undergo surgery under general anesthesia and be intubated with a left DLT\n* Patients with an American Society of Anesthesiologists (ASA) score of I-II-III\n* Patients with a body mass index (BMI) between 18-40 kg\u002Fm²\n* Patients who provide informed consent\n\nExclusion Criteria:\n\n* Patients requiring right DLT placement\n* Patients with ASA score IV and above\n* Patients intubated with a single-lumen tube\n* Patients in whom lung isolation will be achieved with a method other than DLT\n* Emergency cases\n* Patients younger than 18 or older than 80 years","80 Years",{"count":122,"type":21},"In most clinical scenarios, left DLT is preferred for one-lung ventilation because of its anatomical ease of placement; these tubes allow separate ventilation of both lungs. If the DLT is not placed in the proper size and depth, it may result in repeated intubation attempts, airway and dental trauma, failed lung isolation, tube dislodgement, and various unwanted events such as hypoxemia.\n\nThe first and most common method for correct placement of a DLT is the conventional technique, blindly advanced into the left main bronchus, and then confirmed with fiberoptic bronchoscopy (FOB). In this method, the depth at which the tube should be left before performing FOB is left to the clinician's experience. Generally, the DLT is advanced in the trachea until a slight resistance is felt. This may lead to excessive advancement of the DLT into the left main bronchus or premature resistance due to the tube tip touching the carina, causing the clinician to stop before entering the left main bronchus. Therefore, just as selecting the correct size of the DLT is crucial, correctly estimating the appropriate depth is also of great importance. For this reason, different formulas have been proposed in the literature, and new formulas are still being investigated.\n\nThe patient's gender and height are determinant in selecting the appropriate size of the DLT. However, studies in the literature indicate that the accuracy of these formulas may be limited in Asian populations. Therefore, it is important to evaluate the applicability of these formulas in different populations and, if necessary, develop new formulas. In the Turkish population as well, verifying the accuracy of these formulas for determining the proper size and depth of DLT-and if needed, developing new recommendations and formulas-holds clinical importance.\n\nIn this study, conducted at Ankara Atatürk Sanatorium Training and Research Hospital, the aim is to evaluate the accuracy of six different formulas available in the literature for predicting DLT depth in patients undergoing thoracic surgery. Additionally, the correlations between DLT depth and demographic parameters as well as external airway measurements (mouth opening, sternomental distance, thyromental distance, distance between the mentum and manubrio-sternal angle, distance between tragus and manubrio-sternal angle, distance between sternal angle and xiphoid process) will be analyzed. Furthermore, challenges during DLT application, malposition rates and types, and complications will be assessed.\n\nThe primary objective of this study is to evaluate, in patients undergoing thoracic surgery at Ankara Atatürk Sanatorium Training and Research Hospital, how accurate and applicable six different formulas defined in the literature are for predicting the placement depth of the DLT. If the existing formulas are insufficient, the aim is to develop a new formula.",[31,181,29],"One-lung Ventilation (OLV)",[183,184,185,186,187,29],"Double-Lumen Tube","Fiberoptic Bronchoscopy","Airway Measurements","One-Lung Ventilation","Tube Placement Depth","2025-09-29",{"date":190,"type":46},"2025-10-02",{"date":188,"type":46},{"date":193,"type":21},"2026-03-30",{"name":141,"class":142}]