Accuracy of CardioWatch 287-2 During Profound Hypoxia (ACW2)
Hypoxia
About this trial
This is an interventional screening trial for Hypoxia focused on measuring oxygen saturation, heart rate, respiratory rate, SpO2, wrist wearable, PPG, Corsano, CardioWatch 287-2, accuracy
Eligibility Criteria
Inclusion Criteria:
- Healthy non-disabled subjects with American Society of Anesthesiologists health score (ASA) of 1 or 2.
- The subject is aged ≥18 and ≤ 65 years.
- The subject is not intellectual disabled, and has provided informed consent and is willing to comply with the study procedures.
Exclusion Criteria:
- Heavy smokers or individuals exposed to high levels of carbon monoxide that result in elevated carboxyhemoglobin levels.
- Individuals subject to conditions that result in elevated levels of methemoglobin
- Individuals with hypoxia (SpO2 < 95 % at 21 % of oxygen)
- Severe claustrophobia
- Subject is known with altitude disease
- The subject is obese (BMI ≥ 31 kg/m2).
- The subject has a known history of moderate to severe heart disease, lung disease, kidney or liver disease.
- The subject is diagnosed with moderate to severe asthma.
- The subject is known with a hemoglobinopathy or history of anemia, e.g. sickle cell anemia, thalassemia, ... who, in the opinion of the investigator, would make them unsuitable for study participation.
- The subject has any other serious systemic illness.
- Any injury, deformity, or abnormality at the sensor sites that in the opinion of the investigators would interfere with the sensors working correctly.
- The subject has a history of fainting or vasovagal response.
- The subject has a history of sensitivity or allergy to local anesthetics or disinfectants.
- The subject has a diagnosis of Raynaud's disease.
- The subject has unacceptable collateral circulation based on exam by the investigator.
- The subject is pregnant, lactating or trying to get pregnant.
- The subject is unable or unwilling to provide informed consent or is unable or unwilling to comply with study procedures.
- The subject has any other condition, which in the opinion of the investigators would make the subject unsuitable for the study.
- The subject refuses to remove nail-vanish.
Sites / Locations
- Complementair Medisch Centrum (CMC) Europe
Arms of the Study
Arm 1
Experimental
Single group
Each participant wore one CW2 sensor attached to the back of the wrist with a wrist band. Additionally, each participant wore a reference pulse oximeter (Nellcor PM10) attached to the middle finger of the ipsilateral hand. This enabled the comparison of the paired results of the CW2 sensor and reference pulse oximeter equipment for SpO2 measurements at different oxygen saturation levels. Twelve subjects of the 24 participants received an arterial catheter in the contralateral radial artery for exvivo SaO2 determination by CO-oximetry and in order to define the final accuracy of CW2 for SpO2 measurement.