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NCT03502590
It is known that patients with head and neck cancer who have had radiation therapy to the structures of the neck are at a greater risk of difficult mask ventilation and tracheal intubation than the majority of patients undergoing general anaesthesia. Failure to maintain oxygenation can lead to catastrophic consequences for any patient undergoing general anaesthesia, such as severe hypoxic brain injury and death. As such, the current guidelines from the Difficult Airway Society promote the use of a second generation laryngeal mask airway to maintain oxygenation in the event of failed mask ventilation or tracheal intubation, a rescue technique that has in most patient groups a very high chance of success. Unfortunately these guidelines are by necessity generic guidance and do not take into account the clinical performance of these devices in specific patient groups. While there is evidence of the effectiveness of the IGEL device as the primary method of airway maintenance in many studies there are none that describe its clinical performance in a group of patients in whom the rate of failed mask ventilation and tracheal intubation are significantly higher than the general population of patients. It is therefore of great interest to have an idea of the likelihood of success of rescue ventilation with this device in a group of high risk patients.
NCT03028896
The 90° rotation technique is known to improve the success rate of conventional LMA but its effect in LMA FlexibleTM is not known. We tried to find if 90° rotation technique could increase the first attempt success rate of the insertion of LMA FlexibleTM compared to standard technique.
NCT04206592
Prospective, controlled, randomized study to compare Ambu AuraGain with Intersurgical i-Gel mask during mechanical ventilation in patients undergoing laparoscopic cholecystectomy. The investigators hypothesise that when comparing the Ambu® AuraGainTM with Intersurgical i-GelTM mask, the Ambu® AuraGainTM would exhibit a higher oropharyngeal leak pressure (OLP) during mechanical ventilation in patients undergoing laparoscopic cholecystectomy. The main goal is to compare the Ambu AuraGain with the i-Gel in terms of safety and efficacy during mechanical ventilation in critical phase of the pneumoperitoneum in lateral decubitus and reverse trendelemburg position. Secondary objectives are comparing insertion time, number of attempts, ventilatory airway peak pressure, time and success rates for gastric tube insertion and the incidence of side effects.
NCT03006250
The effects of desflurane versus sevoflurane in adult patients undergoing LMA anesthesia on respiratory events during a less than 2-hour elective surgery.
NCT02618525
BACKGROUND AND OBJECTIVES The purpose of this study is to assess whether the loss of motor response to supraorbital pressure can be an alternative to that of jaw thrust to predict optimal condition for laryngeal mask airway (LMA) insertion in children. METHODOLOGY Fifty children (ASA I-II), aged 2 to 10 years, scheduled to receive general anesthesia that required LMA insertion were randomized to receive either supraorbital pressure (SOP) (n = 25) or jaw thrust (JT) (n = 25), after the loss of verbal response and body movements with a standard anesthetic. When motor response to the study intervention was absent, the LMA was inserted.