Predict Near Future Initiation of Bed Exit

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

TERMINATED

Total Enrollment

5 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-12-31

Study Completion Date

2014-03-31

Brief Summary

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Presence/absence in bed along with heartbeat, respiration, and gross motion in bed will be measured in 48 Budd Terrace residents, a long-term care facility of Emory Healthcare. Measurement will be done using only pressure-sensitive mats that lie underneath the mattress and never touch the patient. PHI information will be collected by Emory staff. This PHI will be restricted to: age at time of participation; medical conditions; and medications. The PHI will be stored in a locked file behind a locked door. Data management will provide a unique identifier for each participant linked to a name that will be kept separately from the aggregate data.

The data collected from the bed sensor will be processed offline and separately from the PHI to do proof of concept evaluation for the use of machine learning technology to predict bed exits 1 to 5 minutes ahead of time.

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Detailed Description

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Falls and fall-related injuries are the leading cause of injury deaths among older adults. This proposal will help prevent falls at night by developing a new alarm system. Current bed-exit alarm systems sound when the patient is half way out of the bed or on the ground. We need a warning for when a patient is about to try to exit the bed.

The investigators believe that patients' heart rate or breathing changes before they leave bed. They may also start moving within the bed. This is a brief study with nursing home patient participants. Our primary outcome of interest is bed-exits, and up to 10 participants at a time will be monitored for an average of 6 weeks (less than their anticipated stay) until which time that 250 bed exits have been recorded. Nearly all participants will have physical and/or mental impairments and will be at high risk for falling.

The investigators will use an investigational device to watch over the patient using a pad under the mattress. This monitor is called the "Early-Sense 5". The system works like a microphone for very low sounds. It changes heart, lungs, and movement vibrations into tiny electrical signals. A wire carries these signals to a control box.

The information collected in the box will be stored and checked later. We will use five different math descriptions for recognizing patterns. One or more of these may be useful to give a 1 - 5 minute early warning that the patient is about to exit the bed.

The plan is to determine whether patterns of differences in three areas (heart rate, breathing rate, and body movement) can be recognized and depended on to warn us about bed-exits or attempted bed-exits.

There are four study targets. The first is to develop five possible mathematical descriptions. The second is to use the rest of the information to test which of the descriptions have meaningful ability to predict that a patient is about to get out of bed. The third is to show that warning times are one to five minutes. The fourth is to test the best mathematical descriptions for false alarms and true fall prevention.

How doable Phase I is will depend on how well we can predict that a patient is about to get out of bed. If we can identify a pattern easily, then Phase II research will be put forward.

This study is supported by the National Institute on Aging (SBIR-I).

Conditions

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Sleep

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Bed Exit

Participants will be up to 60 ambulatory Budd Terrace residents.

Inclusion/Exclusion:

Inclusion:

1. Ambulatory patient able to leave the bed.
2. Willingness to consent and participate in a 30-night study

Exclusion:

1. Lack of capacity to consent, without an identifiable surrogate.
2. Terminal Prognosis
3. Unstable health, as determined by the principal investigator, medical doctor, or registered nurse.

Pressure sensitive pad

Intervention Type DEVICE

The proposed research uses an investigational device from EarlySense consisting of a pressure sensitive piezoelectric pad 350 mm x 226 mm x 12 mm or a little less than 9 by 13 inches and under a half inch thick connected to a cord resembling a phone cord to a controller 10.3 by 10.5 by 5.5 inches which in turn plugs into a standard electrical outlet. The power cord is modu¬lar, so it is possible to select a cord that is long enough without having excessive extra length. The con¬nec¬tion between the pad and the monitor has a quick release like a modular telephone.

This system is designed to very unobtrusively collect heartbeat patterns, respiratory patterns, motion in bed, and bed-exit data with no risk or inconvenience to the patient.

Interventions

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Pressure sensitive pad

The proposed research uses an investigational device from EarlySense consisting of a pressure sensitive piezoelectric pad 350 mm x 226 mm x 12 mm or a little less than 9 by 13 inches and under a half inch thick connected to a cord resembling a phone cord to a controller 10.3 by 10.5 by 5.5 inches which in turn plugs into a standard electrical outlet. The power cord is modu¬lar, so it is possible to select a cord that is long enough without having excessive extra length. The con¬nec¬tion between the pad and the monitor has a quick release like a modular telephone.

This system is designed to very unobtrusively collect heartbeat patterns, respiratory patterns, motion in bed, and bed-exit data with no risk or inconvenience to the patient.

Intervention Type DEVICE

Other Intervention Names

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THE EMFIIT MOVEMENT MONITOR

Eligibility Criteria

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Inclusion Criteria

1. Ambulatory patient able to leave the bed.
2. Willingness to consent and participate in a 30-night study

Exclusion:

1. Lack of capacity to consent, without an identifiable surrogate.
2. Terminal Prognosis
3. Unstable health, as determined by the principal investigator, medical doctor, or registered nurse.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes