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Related Experiment Videos

Evaluation of a closed-tracheal suction system.

G C Carlon, S J Fox, N J Ackerman

    Critical Care Medicine
    |May 1, 1987
    PubMed
    Summary

    A new closed-suction system for mechanical ventilation offers no universal advantage over conventional methods. While it may prevent secretion dispersal, its high cost and lack of significant clinical benefit limit its routine use.

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    Area of Science:

    • Critical Care Medicine
    • Respiratory Therapy

    Background:

    • Mechanical ventilation requires airway suctioning to clear secretions.
    • Conventional suctioning involves disconnecting the patient from the ventilator, risking oxygenation and contamination.
    • A novel closed-suction system (Trach Care) allows continuous connection to the ventilator during suctioning.

    Purpose of the Study:

    • To evaluate the benefits and drawbacks of the Trach Care closed-suction system compared to conventional methods.
    • To assess the impact of the closed-suction system on oxygenation and ventilation parameters in patients on mechanical ventilation.
    • To determine the clinical and economic viability of the Trach Care system.

    Main Methods:

    • A comparative study involving 20 mechanically ventilated patients.
    • Patients were divided into two groups based on Positive End-Expiratory Pressure (PEEP) requirements (≤10 cm H2O and >10 cm H2O).
    • Measurements included PaCO2, arterial oxygen saturation, and alveolar-arterial oxygen tension difference before and after suctioning with both conventional and closed-suction techniques.

    Main Results:

    • Oxygenation deterioration was observed only with the conventional open suctioning technique in patients requiring PEEP >10 cm H2O.
    • These changes were statistically significant but not clinically significant.
    • The Trach Care system is significantly more expensive (25 times) than conventional catheters.

    Conclusions:

    • The closed-suction system does not offer universal clinical advantages over conventional suctioning.
    • Potential benefits include preventing the dissemination of contaminated secretions.
    • The high cost of the Trach Care system makes its routine economic justification difficult; use may be considered case-by-case.

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