None listed
Conditions
Brief summary
This study will use EIT to define the patterns of tidal ventilation within the chest in infants undergoing inguinal hernia surgery with four different anaesthetic types, two where they are spontaneously breathing, and two where they are having a general anaesthetic with either spontaneous ventilation with laryngeal mask airway or mechanical ventilation. This study will determine whether mechanical ventilation during general anaesthesia increases the risk of lung inhomogeneity in neonates and small infants. We also hope to determine if there is a correlation between the degree of lung inhomogeneity and the four types of anaesthetic techniques.
Interventions
This study will use EIT (Electrical Impedance Topography) to define the patterns of tidal ventilation within the chest in infants undergoing inguinal hernia surgery with four different anaesthetic types, 1. spinal 2. caudal, sedation and high flow nasal oxygen 3. general anaesthesia with a supraglottic airway 4. general anesthesia with mechanical ventilation via an endotracheal tube. EIT is a non-invasive, radiation-free monitoring tool that allows real-time continuous imaging of ventilation at
This study will use EIT (Electrical Impedance Topography) to define the patterns of tidal ventilation within the chest in infants undergoing inguinal hernia surgery with four different anaesthetic types, 1. spinal 2. caudal, sedation and high flow nasal oxygen 3. general anaesthesia with a supraglottic airway 4. general anesthesia with mechanical ventilation via an endotracheal tube. EIT is a non-invasive, radiation-free monitoring tool that allows real-time continuous imaging of ventilation at the bedside, measuring the impedance of the thorax through a belt placed around patient's chest. The belt will be placed on the patient by a member of the research team preoperatively. Five measurements will be taken, 1. preoperative baseline recording 2. after the commencement of anaesthesia just prior to knife to skin 3. at the end of surgical procedure prior to end anaesthesia (i.e when dressings being applied) 4. within 10 minutes from arrival to recovery/intensive care unit 5. just before discharge from recovery ward (or two hours post operatively if discharged directly from theatre to Neonatal Intensive Care/ Special Care Unit). The EIT device is not part of usual monitoring of infants in this setting and is being specifically utilised for this study to assess ventilation patterns.
Sponsors
Southern Adelaide Local Health Network
Eligibility
Sex/Gender
All
Age
No minimum to 64 Weeks
Healthy volunteers
No
Inclusion criteria
- Inguinal hernia surgery planned for either a general anaesthetic, spinal anaesthetic or caudal, high flow nasal oxygen and sedation. - Anaesthesia technique predetermined by treating team -less than 64 weeks post menstrual age
Exclusion criteria
- Mechanical ventilation immediately prior to procedure - Parental or clinician refusal
Outcome results
None listed