This study demonstrates several different properties of ETT cuff design: (1) the influence of cuff diameter to tracheal diameter on intracuff pressure, (2) the dependence of cuff inflation pressure on airway pressure, (3) the self-sealing action of large diameter cuffs and (4) the differences in performance between different high-volume, low ...

May 23, 2007 · We tested the hypothesis using an endotracheal tube incorporating an ultrathin polyurethane cuff (which reduces channel formation and fluid leakage from the subglottic area), in addition to an SSD lumen, which would reduce the incidence of late-onset VAP.

Cuff lubrication is an inexpensive, highly effective way of reducing leakage past cuffed tracheal tubes for 1–5 days. We recommend consideration of the use of an inert water-soluble gel on all HVLP cuffed endotracheal tubes used in anesthesia and critical care.

When HLVP cuffs are completely inflated, their diameter is 1.5–2 times the average diameter of the trachea in adults. HVLP and LVHP endotracheal tubes are commonly used on a daily level.

However, if a low-volume, high-pressure (LVHP) endotracheal tube is used, cuff pressure is not a reliable indication of adequate seal of the airway, and overinflation can lead to tracheal necrosis . For LVHP tubes, the cuff should be deflated and repositioned every 4 hours after oral suctioning .

The difference between LVHP and HVLP ETT cuffs • LVHP cuffs The cuff has a small diameter at rest and a low residual volume, which is the amount of air that remains in the cuff after it has been allowed to equilibrate with atmospheric pressure. The HPLV cuffs require a high pressure to overcome the low compliance of the cuff itself.

Jan 1, 2024 · The lack of statistical correlation between the duration of intubation and tracheal ulcer severity, along with a low annual incidence of tracheal ulcers, supports the improved safety of high-volume, low-pressure cylindrical, cuffed endotracheal tubes.

Jan 24, 2023 · Inflation of the endotracheal tube (ETT) cuff provides a seal between the tube and the trachea, preventing leakage of gases and fluids. Underinflation of the cuff can result in pulmonary aspiration of orogastric contents, while leakage of anaesthetic gases can result in contamination of the room.

Why do HVLP cuffs fail? The use of high-volume low-pressure (HVLP) cuffed tracheal tubes became common place in the early 1970’s following the recognition of the high incidence of tracheal injury associated with the use of low-volume …

Endotracheal tubes were typically constructed with low-volume cuffs which had little or no resting volume and a diameter smaller than tracheal diameter. Such cuffs frequently required inflation pressures of 160 to 300 mm Hg to seal the tracheal-8 and deformed the trachea from its normal HC" shape into an expanded circular shape.