Comparison of Noninvasive Hemoglobin Disposable Sensors

Exclusion Criteria

• •Age less than 18 yrs and greater than 40 years
• •If the Warming and cooling subjects have open cuts of skin abrasions on their extremities they will be excluded because alcohol spray may be painful.
• •Weight of less than 110 lbs or more than 250 lbs if the subject is less than 6 feet tall.
• •Hemoglobin less than 11 g/dL
• •ASA physical status of III. IV, V.
• •Pregnant
• •Subject has known drug or alcohol abuse
• •Subject has skin abnormalities affecting the digits such as psoriasis, eczema, angioma, scar tissue, burn, fungal infection, substantial skin breakdown, nail polish or acrylic nails.
• •Subject has experienced a head injury with loss of consciousness within the last year.
• •Subject has known neurological and psychiatric disorder that interferes with the subjects' level of consciousness.
• •Known or concurrent chronic usage of psychoactive or anticonvulsive drugs within the last 90 days, or any use in the last 7 day (i.e. tricyclic antidepressants, MAO inhibitors, Lithum, neuroleptics, anxiolytics or antipsychotics, except SSRIs).
• •Subject has any medical condition which in the judgment of the investigator, renders them inappropriate for participation in this study, such as Reynauds Syndrome.
• •Systolic BP \>140 mmHg or Diastolic BP \> 100 mmHg.
• •Baseline heart rate \< 50 bpm.
• •Inability to tolerate sitting still or minimal movement for up to 90 minutes
• •Discretion of investigator