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document
A comparison of the laryngeal tube-S and Proseal laryngeal mask during outpatient surgical procedures . BACKGROUND AND OBJECTIVE The Laryngeal Tube Sonda ( LTS ) and the ProSeal Laryngeal Mask Airway ( PLMA ) are two new devices introduced for maintaining the airway during controlled ventilation under general anaesthesia . The present investigation compared their performance in a randomized controlled study . METHODS One hundred ASA I-II patients , aged 18-60 yr undergoing elective minor surgery , were randomized to receive either an LTS ( n = 50 ) or PLMA ( n = 50 ) for airway management . After induction of general anaesthesia , the devices were inserted , its correct placement was verified and airway leak pressure was measured . Ease of insertion , quality of airway seal , fibre-optic view and postoperative pharyngeal morbidity were examined . RESULTS There were no differences in patient characteristics for both groups . First-time and second-time success rates were comparable for both groups ( 86 vs. 88 % and 96 vs. 98 % in LTS and PLMA groups , respectively ) . The airway of one patient in each group could not be managed with these devices after three attempts . Time until delivery of first tidal volume for LTS and PLMA was 24.5 +/- 6.9 and 28.8 +/- 10.3 s. Fixation and manipulation time was 54.9 +/- 15.2 and 73.2 +/- 25 s , respectively ( P < 0.05 ) . Airway seal pressure ( cm H ( 2 ) O ) for LTS and PLMA was 20 +/- 8.6 and 24.1 +/- 10.8 , respectively ( P = 0.04 ) . Patients were questioned on a variety of postoperative pharyngeal morbidities . Only hoarseness was more frequent in the LTS group . CONCLUSIONS Both devices provide a secure airway , are similar in clinical utility and are easy to insert . Better airway seal was detected in the PLMA group .
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Intervention_Surgical
laryngeal tube-S
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Intervention_Surgical
Proseal laryngeal mask
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Intervention_Physical
Laryngeal Tube Sonda ( LTS )
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Intervention_Physical
ProSeal Laryngeal Mask Airway ( PLMA )
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Intervention_Surgical
LTS
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Intervention_Surgical
PLMA
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Outcome_Other
Ease of insertion
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Outcome_Other
quality of airway seal
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Outcome_Other
fibre-optic view
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Outcome_Physical
postoperative pharyngeal morbidity
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Outcome_Other
First-time and second-time success rates
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Outcome_Physical
airway
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Outcome_Other
Time until delivery of first tidal volume
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Outcome_Other
Fixation
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Outcome_Other
manipulation
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Outcome_Physical
Airway seal pressure
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Outcome_Physical
postoperative pharyngeal morbidities
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Outcome_Adverse-effects
.
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Outcome_Adverse-effects
hoarseness
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Outcome_Physical
airway seal
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Participant_Condition
outpatient surgical procedures
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Participant_Condition
general anaesthesia
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Participant_Sample-size
One hundred
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Participant_Condition
ASA I-II patients
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Participant_Age
18-60 yr
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Participant_Condition
elective minor surgery