View clinical trials related to Ventilation.
Filter by:Laryngotracheal surgery often requires a small diameter endotracheal tube to oxygenate patients under general anesthesia. Oxygenation is often only possible with high-frequency jet ventilators due to the use of small diameter and high resistance airway cannulas. Flow controlled ventilation is a new ventilation modality capable for ventilation through a small diameter endotracheal tube (Tritube) with an active expiratory phase and the possibility of controlled carbon dioxide elimination during mechanical ventilation. The aim of the present trial is to characterize perioperative changes in lung volume, ventilation inhomogeneity and respiratory mechanics in patients undergo upper airway surgery under general anesthesia with either flow controlled or high-frequency jet ventilation.
The goal of this prospective, observational study is to describe EIT measurements at different time points during the perioperative period in healthy children undergoing laparoscopic surgery. The objective is to evaluate the impact of general anesthesia and laparoscopy on regional pulmonary ventilation visualized at EIT during the perioperative period.
Comparison of Manual Ventilation and Automatic Mechanical Ventilation during CPR, Pilot & Feasibility Study (CAVE-I trial)
When tracheal intubation and face mask ventilation fail, and the insertion of supraglottic airway devices (SHA) can provide ventilation, protecting the patient from hypoxemia. Supraglottic airway devices have become an important part of difficult airway algorithms. The European Resuscitation Council Guidelines recommend supraglottic airway devices for airway management by non-specialized healthcare providers. Education through simulators contributes to the development of students without direct contact with patients. In this study, it was aimed to compare the success of placement of four different supraglottic airway devices on the manikin of term 5 students who participate to the Anesthesiology and Reanimation internship.
This study aims to evaluate the effect of paratracheal pressure on mask ventilation in anesthetized obese patients in terms of expiratory tidal volume, and peak inspiratory pressure.
This study will combine Duffin's rebreathing procedure with additional study procedures, such as quantitative pupillometry, that are planned for subsequent clinical studies in order to confirm feasibility and gather reproducibility data using the procedure. The reproducibility of Duffin rebreathing has been assessed previously by Mahamed and Duffin (2001) performing hyperoxic and hypoxic rebreathing procedures measured once daily for 14 consecutive days and then by Jensen et al. (2010) performing 4 pairs of hyperoxic and hypoxic rebreathing procedures in 1 day followed by 1 pair on 4 additional days separated by weeks to more than a month. The present study is an unblinded reproducibility assessment to assess variability of the ventilatory response to Duffin's rebreathing procedure. Subjects will report to the study site for screening between Days -28 to -2 and then will return to the site on Day -1 for baseline assessments and check-in. After check-in (Day -1), subjects will remain in study site for PD assessments on Day 1 and check out on Day 2. Paired rebreathing procedures (i.e., at two different isoxic end tidal PO2 [partial pressure oxygen] levels) will be performed on Day 1 at 0, 2, 4, and 6 hours. An additional pair of rebreathing procedures will be performed on Day 2 before checkout (approximately 24 hours). Subjects will not be administered any drugs in this study.
In this single-blind clinical trial study, 70children who are candidates for lower abdominal elective surgery under general anesthesia presented at Imam Hossein Hospital in Isfahan will be included in the study and will be divided into 2 groups. In the first group, ventilation with facial mask and in the second group, ventilation with nasal mask will be done for three minutes. Then the reduction in SPO2 and the impossibility of ventilation of patients will be evaluated and compared between the two groups.
Ventilation of a bearded patient with the commonly used face mask has low efficiency because of difficulties to achieve a tight seal around the mouth and nose. The purpose of this study is to evaluate the efficacy of a novel bag valve Guedel adaptor (BVGA) that enables the direct connection of a bag valve device to a Guedel - eliminating the need for a face mask in anesthetized bearded men.
In cases where there is no ventilation-perfusion problem, the end-tidal carbon dioxide (ETCO2) value is closely associated with partial arterial carbon dioxide pressure (PaCO2); therefore, the PaCO2 value can be estimated using ETCO2 measurements in patients without significant cardiopulmonary disorders. The aim of the investigator's study is to evaluate the reliability of pulmonary ventilation monitoring with ETCO2 value and to investigate at what tidal volume values ETCO2 monitoring provides reliable information.
This study will be conducted to evaluate effects of different modes of ventilation on pediatric cataract surgery aiming to a peri-operative stable anesthesia, better surgical satisfaction and post operative recovery. It is hypothesized that controlled ventilation without muscle relaxation will be advantageous to other modes in providing adequate surgical satisfaction with considerable depth of anesthesia and better recovery profile.