Cough
Conditions
Brief summary
The hypothesis of this study is that Magnesium sulfate pretreatment (50mg/kg) will reduce the incidence of cough and chest wall rigidity caused by remifentanil administration. The purpose of this study was to investigate the effect of magnesium sulfate administered before induction of anesthesia on thoracic stiffness and cough response caused by opioid analgesics administered for general anesthesia.
Interventions
DRUGMagnesium sulfate
magnesium sulphate 50mg/kg (loading dose for 10 minutes), 15mg/kg/hr (continuous infusion)
DRUGPlacebo
normal saline 100ml (loading dose for 10 minutes), 15mg/kg/hr (continuous infusion)
Sponsors
Seoul National University Bundang Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* Patients aged 20-75 years of age who are undergoing surgery under general anesthesia using a laryngeal mask and who have consented to participate in this study among American Society of Anesthesiologists body grade 1 or 2
Exclusion criteria
* When coughing may occur due to an underlying disease (upper respiratory infection, rhinitis, post nasal drip, asthma, chronic obstructive pulmonary disease, pneumonia, bronchitis, current smokers, etc.) * If you have kidney disease that can affect magnesium metabolism (glomerular filtration rate less than 60) * If you are taking opioid analgesics or magnesium for other reasons * Patients with hypermagnesemia * Patients with atrioventricular block (stages I-III) or other cardiac conduction disorders * Pregnant or lactating women * Patients with myasthenia gravis * Patients taking drugs that are contraindicated or interact with magnesium (barbitalates, aminoglycoside antibiotics, isoniazid, chlorpromazine, digoxin) * In case of hypersensitivity to magnesium * Patients with a history of hypersensitivity to propofol and any of its components * Patients with a history of hypersensitivity to remifentanil and other fentanyl analogues
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| remifentanil induced cough | from preoperative 20 minutes to induction of anesthesia | To evaluate whether coughing occurs during anesthesia induction from the start of remifentanil infusion to the completion of laryngeal mask insertion. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| severity of cough | from preoperative 20 minutes to induction of anesthesia | mild: 1-2, moderate: 3-4, severe: ≥ 5 |
| laryngeal mask airway (LMA) insertion compliance | from preoperative 20 minutes to induction of anesthesia | Assess the number of trials prior to successful laryngeal mask insertion and the need for administration of a neuromuscular blocker. |
| lung compliance | from induction of anesthesia to finish of surgery | Poor compliance of mechanical ventilation is defined as a difference between the set tidal volume and the actual tidal volume value applied to the patient by 100ml or more. |
Outcome results
None listed