Ultra-low-cost clinical pulse oximetry

An ultra-low-cost pulse oximeter is presented that interfaces a conventional clinical finger sensor with a mobile phone through the headset jack audio interface. All signal processing is performed using the audio subsystem of the phone. In a preliminary volunteer study in a hypoxia chamber, we compared the oxygen saturation obtained with the audio pulse oximeter against a commercially available (and FDA approved) reference pulse oximeter (Nonin Xpod). Good agreement was found between the outputs of the two devices.

[1]  R. Gilman,et al.  The role of pulse oximetry. Its use as an indicator of severe respiratory disease in Peruvian children living at sea level. Respiratory Group in Peru. , 1995, Archives of pediatrics & adolescent medicine.

[2]  H. Campbell,et al.  The prevalence of hypoxaemia among ill children in developing countries: a systematic review. , 2009, The Lancet. Infectious diseases.

[3]  T. Marrie,et al.  Oxygen saturations less than 92% are associated with major adverse events in outpatients with pneumonia: a population-based cohort study. , 2011, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

[4]  R. Wiebe,et al.  Pulse oximetry to identify a high-risk group of children with wheezing. , 1989, The American journal of emergency medicine.

[5]  I. Wilson,et al.  Perioperative mortality in Zambia. , 1989, Annals of the Royal College of Surgeons of England.

[6]  D. Hansen,et al.  Anaesthesia in Malawi: Complications and Deaths , 2000, Tropical doctor.

[7]  Mark I Neuman,et al.  Prediction of Pneumonia in a Pediatric Emergency Department , 2011, Pediatrics.

[8]  J. Bonkowsky,et al.  Hypoxaemia in acute respiratory and non-respiratory illnesses in neonates and children in a developing country , 2002, Archives of disease in childhood.

[9]  M. Chobli,et al.  Deaths associated with anaesthesia in Togo, West Africa , 2005, Tropical doctor.

[10]  T. A. Tuan,et al.  Brief Hospitalization and Pulse Oximetry for Predicting Amoxicillin Treatment Failure in Children with Severe Pneumonia , 2006, Pediatrics.

[11]  J. Cooper,et al.  Standards for patient monitoring during anesthesia at Harvard Medical School. , 1986, JAMA.

[12]  Guy A. Dumont,et al.  audio phone oxiMeter , 2011 .

[13]  N. Gibbs,et al.  Anaesthetic Mortality Rates in Western Australia 1980–2002 , 2005, Anaesthesia and intensive care.

[14]  J. Zamora,et al.  Pulse oximetry screening for critical congenital heart defects in asymptomatic newborn babies: a systematic review and meta-analysis , 2012, The Lancet.