Fasting (according to ASA, ESA or institutional guidelines) is an important strategy to minimize the risk of regurgitation, vomiting and pulmonary aspiration during general anaesthesia; the effect of fasting time for clear fluid on gastric pH in children is goal of this study and can be investigated in children undergoing elective procedures in intubation anaesthesia without inconvenience or additional invasive procedure and hence without additional risk Hypotheses: Gastric pH is higher in children that drink until 1 hour before anaesthesia induction than in those that drink until 2 hours before anaesthesia induction
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
150
drinking of clear fluid in preoperative period
University Children's Hospital
Zurich, Switzerland
gastric pH
gastric pH is measured from gastric contents which is sampled in a syringe via an orogastric tube immediately during anaesthesia after tracheal intubation induction; suctioning of the stomach after intubation is a procedure routinely performed in every intubation child in our institution
Time frame: within 10 min after tracheal intubation
subjective feeling of hunger/thirst
subjective feeling of hunger/thirst given as rating scale from 1 to 4
Time frame: within 10 minutes after arrival of patient in operating theatre
gastric aspirate volume
gastric aspirate volume is the amount of gastric contents which is sampled in a syringe via an orogastric tube immediately during anaesthesia after tracheal intubation induction; suctioning of the stomach after intubation is a procedure routinely performed in every intubation child in our institution
Time frame: within 10 min after tracheal intubation
Postoperative Nausea and Vomiting (PONV) in recovery unit
Time frame: recovery period, on the average within 90 minutes after end of anaesthesia
Behaviour during recovery period
Rating Scale 1 - 5 by blinded nurse (5: severely agitated/emergency delir with subsequent drug therapy, 4: agitated/emergeny delir; 3: slightly agitated; 2: complaining pain but cooperative; 1: cooperative)
Time frame: recovery period, on the average within 90 minutes after end of anaesthesia
Behaviour during anaesthesia induction
Rating scale 1 - 5 by (blinded) anaesthetist: 1: cooperating - 2: anxious but cooperating - 3: hostile - 4: crying - 5: agitated/fighting
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: on the average within 20 minutes after arrival of patient in operating theatre