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document
Endotracheal cuff pressure and tracheal mucosal blood flow : endoscopic study of effects of four large volume cuffs . Large volume , low pressure endotracheal tube cuffs are claimed to have less deleterious effect on tracheal mucosa than high pressure , low volume cuffs . Low pressure cuffs , however , may easily be overinflated to yield pressures that will exceed capillary perfusion pressure . Various large volume cuffed endotracheal tubes were studied , including Portex Profile , Searle Sensiv , Mallinkrodt Hi-Lo , and Lanz . Tracheal mucosal blood flow in 40 patients undergoing surgery was assessed using an endoscopic photographic technique while varying the cuff inflation pressure . It was found that these cuffs when overpressurised impaired mucosal blood flow . This impairment of tracheal mucosal blood flow is an important factor in tracheal morbidity associated with intubation . Hence it is recommended that a cuff inflation pressure of 30 cm H2O ( 22 mm Hg ) should not be exceeded .
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Intervention_Physical
Large volume , low pressure endotracheal tube cuffs
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Intervention_Physical
Low pressure cuffs
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Intervention_Physical
large volume cuffed endotracheal tubes
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Intervention_Physical
Portex Profile
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Intervention_Physical
Searle Sensiv
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Intervention_Physical
Mallinkrodt Hi-Lo
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Intervention_Physical
Lanz
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Intervention_Physical
cuff inflation pressure
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Outcome_Physical
tracheal mucosa
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Outcome_Physical
impaired mucosal blood flow .
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Outcome_Physical
tracheal mucosal blood flow
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Outcome_Physical
tracheal morbidity
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Outcome_Physical
cuff inflation pressure
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Participant_Condition
Endotracheal cuff pressure and tracheal mucosal blood flow :
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Participant_Sample-size
40
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Participant_Condition
patients undergoing surgery