View clinical trials related to Bronchoscopy.
Filter by:High frequency jet ventilation (HFJV) has been introduced in 1967 as technique allowing ventilation with simultaneous access to the airway for bronchoscopy. Continuous improvement in the technique has led to a large use during interventional bronchoscopy, especially in large centers. However, complications occuring during the use of HFJV are poorly known. In this retrospective cohort study, the charts of all patients who had a bronchoscopy with the use of HFJV between 2019 and 2023 in our hospital will be analyzed. Primary outcome will the description of all complications during HFJV. Complications are defined as: - Hypoxia: SpO2 < 90% for 1 min - Severe hypoxia: SpO2 < 85% for 1 min - Hemodynamic instability, defined as Arterial pressure < 90/60 - Cardiac arrhythmia - Laryngospasm or bronchospasm - Barotrauma or volutrauma - Need for ICU admission A model predicting the risk for developing any complication will be developped using 2 mathematical methods: - a multivariate analysis - a data mining approach For both approaches, the following variables will be included in the model: - Age - Gender - Weight - Height - BMI - Smoking - Alcohol consumption - Consumption of Other drugs - ASA class - Obstructive pulmonary disease - Restrictive lung disease - COPD status (1, 2, 3, 4) - Interstitial lung disease - Lung tumor - Trachea location - Carina location - Bronchial location - Pulmonary or tracheal stenosis - Presence of stridor - Severe stenosis (< 6 mm) - Baseline SpO2 (pre-intervention) - Pre-intervention oxygen requirement Procedure - Duration (min) - Stent placement - Dilation - Laser treatment - Length of hospital stay Lung function tests - FEV1 (forced expiratory volume) - VC (Vital Capacity) - FEV1/VC (Tiffeneau ratio) - CPT (total lung capacity) - DLCO (carbon monoxide diffusion)
The purpose of study aims to determine which of the three different oxygenation strategies, including nasal cannula, modified nasopharyngeal cannula, and HFNO groups, is safer in patients undergoing bronchoscopy under sedation.
Over the past decade, bronchoscopy technology has developed rapidly and has become an important part of the diagnosis and treatment of respiratory diseases. Bronchoscopy are usually carried out under monitored anesthesia care (MAC), which can relieve the anxiety of the patient, make the operation easier, and improve the completion rate of bronchoscopy. At present, bronchoscopy has widely used midazolam, propofol, short-acting opioids, and newer sedatives such as dexmedetomidine, but each drug has its limitations. Dexmedetomidine is widely used in non-intubation general anesthesia and sedation during short outpatient surgery. However, rapid and high-dose infusion of dexmedetomidine leads to dose-dependent hypotension, temporary hypertension, bradycardia, and excessive sedation, causing hemodynamic fluctuations. At the same time, it has slow onset and metabolism. This may be a potential risk for some elderly patients with many underlying diseases and unstable hemodynamics. Remimazolam is an ultra-short-acting benzodiazepine. It has the advantages of short action time, low accumulation, low risk of respiratory depression, and reversibility. We believe that remimazolam can improve the onset time and resuscitation time, to achieve sufficient sedation, improve the success rate of bronchoscopy, while reducing the patient's oxygen saturation drop during the operation, postoperative opioid-related nausea and vomiting, postoperative delirium and other related adverse events. This study is a randomized controlled trial to confirm the above hypothesis.
Flexible bronchoscopy is one of the most widely performed procedures for diagnosis of various bronchopulmonary diseases. Most patients tolerate the procedure well although cough is often reported as a distressing symptom. It is likely that the acceptance of bronchoscopy would be significantly improved with control of cough. Topical lignocaine is administered during bronchoscopy for local anaesthesia. There is uncertainty regarding the adequate dose of lignocaine sprays for pharyngeal anaesthesia during flexible bronchoscopy. This study would help to determine the optimal dose of lignocaine sprays for pharyngeal anaesthesia during flexible bronchoscopy.
To evaluate the effect and safety of noninvasive ventilation assisted interventional bronchoscopy for hypoxemia patients with central airway stenosis. With the sedation and analgesia, noninvasive ventilation assisted interventional bronchoscopy for hypoxemia patients with central airway stenosis is safe and effective, carries high satisfaction rate.
This study evaluates the value of different bronchoscopy combination for diagnosing peripheral pulmonary lesions suspected to be cancer. One-third of participants will receive routine bronchoscopy, while one-third of participants will receive bronchoscopy combined with a guiding equipment and the other one-third of participants will receive bronchoscopy combined with two or more guiding equipments. These guiding equipments include virtual bronchoscopic navigation(VBN), endobronchial ultrasonography with a guide sheath(EBUS-GS) and fluoroscopy.
Electrical Impedance Tomography (EIT)is a technique based on the injection of small currents and voltage measurements using electrodes on the skin surface generating cross-sectional images representing impedance change in a slice of the thorax. It is a radiation free, non-invasive and portable lung imaging technique. Impedance changes in lung ventilation are investigated in mechanically ventilated patients who routinely undergo bronchoscopy in intensive care medicine. Bronchoscopy is performed to suction secretions as well as to analyze the secretions to recognize inflammations and diseases. It is an essential intervention which causes changes in ventilation which remain for 1-2 hours. It is not completely investigated why these changes in ventilation remain for so long time and how they are distributed regionally. Therefore the purpose of this study is to investigate the change in pulmonary regional ventilation in patients who routinely undergo bronchoscopy to possibly generate ideas how to optimize the ventilation after bronchoscopy to optimize the patient´s treatment.
The purpose of this study is to evaluate the upper airway collapsibility by sleep endoscopy in different sedative levels. Propofol pump infusion will be used to achieve conscious sedation. Bispectral Index monitor will be applied to the monitor the conscious level. Two different sedative levels (BIS 65-75, 50-60) will be achieved for upper airway evaluation. The severities of upper airway obstruction will be evaluated the correlation to the disease severities. Mandible advancement will be done to evaluate the response for oral appliance.
This study will collect fluid and tissue specimens from the lungs and nose of healthy people and people with a history of lung infections. The specimens will be examined for differences between the two groups that may be associated with susceptibility to certain infections. Healthy normal volunteers and people with a history of lung infections between 18 and 75 years of age who are followed at NIH may be eligible for this study. Participants undergo the following procedures: Medical history and physical examination. Blood and urine tests. Electrocardiogram (ECG) and chest x-ray. Treadmill exercise stress test (for people over 45 years old with a history of chest pain or ECG abnormalities). Bronchoscopy: The subject s nose and throat are numbed with lidocaine and a sedative is given for comfort. A thin flexible tube called a bronchoscope is advanced through the nose or mouth into the lung airways to examine the airways carefully. Fluid collection during the bronchoscopy using one of the following methods: - Bronchoalveolar lavage: Salt water is injected through the bronchoscope into the lung and immediately suctioned out, washing off cells lining the airways. - Bronchial brushings: A brush-tipped wire enclosed in a sheath is passed through the bronchoscope and a small area of the airway tissue is gently brushed. The brush is withdrawn with some tissue adhering to it. - Endobronchial biopsies: Small pinchers on a wire are passed through the bronchoscope and about 1 to 2 millimeters of tissue is removed. - Nasal scrape: A small device is used to scrape along the inside of the nose to collect some cells. - Sputum induction - Exhaled breath condensate to obtain specimens for in vitro investigations and comparisons of both the cellular and acellular components. - Nasal nitric oxide production - Nasal potential difference - Exhaled aerosol mask sample collection - Cough aerosol collection - Exhaled particle collection - Lung Clearance Index (LCI)