This study validates Lifelight® First, a software application, in a laboratory setting. Participants will undergo testing to obtain measurements from one or more of the four vital signs.
Assessment of vital signs is an essential part of any clinical assessment and is undertaken regularly on patients accessing healthcare services. The accuracy of these measurements is of vital importance as decisions regarding the urgency of medical review and subsequent management are often influenced by these measures. The measurement of vital signs as part of normal medical care requires a level of medical / nursing skill or patient training. Observations can be altered by stress or anxiety making the results less representative of the patient's clinical state. This is particularly recognised in the measurement of blood pressure but stress can also alter heart and respiratory rate. Regular community and/or home monitoring of vital signs is useful in older populations and those with long-term conditions; standard of care methods can be labour intensive for health care providers, leading to greater financial burdens for health services. Lifelight® First is software which allows non-invasive, non-contact measurement of these observations. It can be used on a tablet (e.g. Apple® iPad®) that possesses an integral camera. The use of computer technology is now commonplace in society so the general public are likely to be accepting of this as a non-threatening method of measurement, thus reducing the impact of anxiety on the results. Lifelight® First therefore has potential application within various areas of the health care system, it could also be useful in settings where direct access to health care is limited or as a part of a telemedicine service. This study has been designed to evaluate the safety and performance of Lifelight® First, an investigational medical device. The data will be used to support the CE marking of the Lifelight® First device. The study design has been based upon the guidance in ISO standards and also within published scientific literature. Ultimately the data points to be obtained and methodology will be required to follow this guidance in order to obtain the CE mark.
Study Type
OBSERVATIONAL
Enrollment
85
Participants enter a chamber with a modifiable atmosphere and sit on a bench associated with an exercise bicycle. The subject breathes hypoxic air to achieve various SpO2 readings throughout the range of 80-97%. The participants undertake recumbent cycling for up to 10 minutes at various intervals and differing oxygen/nitrogen balances to induce changes in their vital signs. Measurements of the Vital Signs are taken at various time points using Lifelight First and the reference device using 2 observers
Participants enter a chamber with a modifiable atmosphere and sit on a bench associated with an exercise bicycle. The subject breathes hypoxic air to achieve various SpO2 readings throughout the range of 80-97%. The participants undertake recumbent cycling for up to 10 minutes at various intervals and differing oxygen/nitrogen balances to induce changes in their vital signs. Measurements of the Vital Signs are taken at various time points using Lifelight First and the reference device using 2 observers
University of Portsmouth, Department of Sport and Exercise Science
Portsmouth, England, United Kingdom
Blood Pressure Readings Validation
Agreement of Lifelight® First standard of care and range for blood pressure as per ISO 81060-2-Non-invasive-sphygmomanometers-Part 2-Clinical validation of automated measurement type
Time frame: Single Visit; up to one day
Oxygen Saturation Readings Validation
Agreement of Lifelight® First standard of care and range for oxygen saturation as per ISO 80601-2-61-Medical electrical equipment-Part 2-61:Particular requirements for basic safety and essential performance of pulse oximeter equipment
Time frame: Single Visit; up to one day
Heart Rate (pulse) Readings Validation
Agreement of Lifelight® First standard of care and range for heart rate (pulse) function as per ISO 80601-2-61- Particular requirements for basic safety and essential performance of pulse oximeter equipment
Time frame: Single Visit; up to one day
Respiratory Rate Readings Validation
Agreement of Lifelight® First standard of care and range for respiratory rate by manually counting chest rises.
Time frame: Single Visit; up to one day
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Participants enter a chamber with a modifiable atmosphere and sit on a bench associated with an exercise bicycle. The subject breathes hypoxic air to achieve various SpO2 readings throughout the range of 80-97%. The participants undertake recumbent cycling for up to 10 minutes at various intervals and differing oxygen/nitrogen balances to induce changes in their vital signs. Measurements of the Vital Signs are taken at various time points using Lifelight First and the reference device using 2 observers
Participants enter a chamber with a modifiable atmosphere and sit on a bench associated with an exercise bicycle. The subject breathes hypoxic air to achieve various SpO2 readings throughout the range of 80-97%. The participants undertake recumbent cycling for up to 10 minutes at various intervals and differing oxygen/nitrogen balances to induce changes in their vital signs. Measurements of the Vital Signs are taken at various time points using Lifelight First and the reference device using 2 observers For participants only participating in the Blood Pressure Arm of the trial, they will not be required to enter the normobaric chamber but will have their blood pressure readings taken in the ambient environment including lying supine in order to generate hypotensive readings.