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Assessment of Breathing Using an Under-bed Weighing Scale

Assessment of Breathing Using an Under-bed Weighing Scale

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04736212
Enrollment
16
Registered
2021-02-03
Start date
2021-03-24
Completion date
2022-04-01
Last updated
2023-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Postoperative Respiratory Complication, Respiratory Failure

Brief summary

The aim of this study is to assess the capability of a modified under bed weighing scale (contact-free unconstrained respiratory monitor, BSS) to predict postoperative pulmonary complications in high-risk surgical patients. The study is designed to test the hypothesis that abnormal breathing measured by a modified under bed weighing scale predicts postoperative pulmonary complications within 7 days after surgery.

Interventions

DEVICEBed sensor monitoring system

Respiratory patterns in the post-anesthesia care unit will be assessed using a validated, modified under bed weighing scale placed under the patient's bed in the PACU.

Sponsors

Chiba University
CollaboratorOTHER
Beth Israel Deaconess Medical Center
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age 18 years or older 2. Undergoing non-cardiac surgery under general anesthesia. 3. Score ≥ 25 in the risk prediction score (Table1)

Exclusion criteria

1. Ambulatory (outpatient) surgery 2. Transfer directly to the ICU 3. Remain intubated/ planned to remain intubated after surgery 4. Pregnant patients: as detected by patient self-reporting of diagnosed by preoperative pregnancy testing according to institutional policies at BIDMC. 5. Patients enrolled in other interventional studies which could confound the primary endpoint.

Design outcomes

Primary

MeasureTime frameDescription
Postoperative pulmonary complicationsFirst 7 postoperative daysatelectasis, pneumonia, acute respiratory distress syndrome, pulmonary aspiration, re-intubation, unprecedented non-invasive ventilation, unplanned ICU admission, or re-admission to the hospital due to respiratory complication.

Secondary

MeasureTime frameDescription
Postoperative pulmonary complicationsFirst 3 postoperative daysatelectasis, pneumonia, acute respiratory distress syndrome, pulmonary aspiration, re-intubation, unprecedented non-invasive ventilation, unplanned ICU admission, or re-admission to the hospital due to respiratory complication.
Major adverse Cardiovascular eventsFirst 7 postoperative daysdeath, myocardial infarction, coronary revascularization, stroke, and heart failure.
Hospital length of stay30 days after surgeryDuration from surgery to hospital discharge
Adverse discharge disposition30 days after surgerylost of ability to live independently: adverse discharge disposition to a skilled nursing facility or in-hospital mortality

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026