Visual Assessment for Pressure-time Curve

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-12-01

Study Completion Date

2017-07-01

Brief Summary

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Airway pressure-time (P-t) curve and stress index (SI) assessment have been proposed to guide the mechanical ventilation settings and minimize ventilator-induced lung injury.

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Detailed Description

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The stress index (SI), which has been proposed to guide the mechanical ventilation settings and minimize ventilator-induced lung injury. It reflects the change of respiratory compliance during inspiration. Value of SI equals to 1 that indicates a constant compliance, whereas values lower and higher than 1 indicate increase and decrease of compliance over inspiratory time, suggesting tidal recruitment and tidal hyperinflation, respectively. Based on the different values of SI showing different shapes, SI of straight curve equals to 1, SI of concave curve lower than 1 and convex curve higher than 1, the investigators speculated that the SI value could be reliably and accurately estimated by visual inspection of the P-t curve.

Conditions

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Mechanical Ventilation

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Interventions

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the investigators just observe the pressure time curve on the ventilation

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* aged 18 years or older; intubated and mechanical ventilated by volume-control ventilation with constant flow;

Exclusion Criteria

* evidence of active air leak from the lung, including bronchopleural fistula, pneumothorax, pneumomediastinum, or existing chest tube; evidence of the stiff chest wall, such as existing the pleural effusion, intra abdominal hypertension, chest injuries and abdominal injuries.

Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No