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This cohort study examined the potential effects of labor on airway outcomes with LMA use for cesarean delivery under the influence of general anesthesia.
To study the effect of labor on airway outcomes with
laryngeal mask airway (LMA) for cesarean delivery, this cohort study of 584
parturients found that partsurients under labor had augmented incidence of
first-attempt LMA insertion failure and oropharyngeal trauma. Labor is not
linked with a substantial change in time to effective ventilation in case of
LMA for general anesthesia.
This cohort study examined the potential effects of labor
on airway outcomes with LMA use for cesarean delivery under the influence of
general anesthesia.
Healthy parturients who fasted for more than 4 hours undergoing category 2 or 3 cesarean delivery with LMA under anesthesia were included. The LMA was used as suggested after rapid sequence induction and cricoid pressure. The time to effective ventilation was regarded as the primary outcome.
First-attempt insertion failure, ventilation parameters, mucosal trauma, pulmonary aspiration, oxygen saturation and Apgar scores were regarded as secondary outcome. Alterations between the labor status were verified. Quantitative associations amongst labor status and outcomes were established via univariate logistic regression analysis.
The data from 584 parturients were investigated, out of which 37.8% were in labor. Labor did not considerably affect time to effective ventilation (Table 1):
There was no decrease in oxygen saturation or
pulmonary aspiration.
Labor may enhance the number of insertion attempts and
oropharyngeal trauma with LMA usage for cesarean delivery in parturients at low
risk of difficult airway. The effects of labor on LMA use in high-risk
parturients needs to be investigated in the future.
BMC Anesthesiology
The effects of labor on airway outcomes with Supreme™ laryngeal mask in women undergoing cesarean delivery under general anesthesia: a cohort study
Ming Jian Lim et al.
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