Accuracy of Smartphone-Based Pulse Oximetry Compared with Hospital-Grade Pulse Oximetry in Healthy Children

Tomlinson, Sarah; Behrmann, Sydney; Cranford, James A.; Louie, Marisa C.; Hashikawa, Andrew

doi:10.1089/tmj.2017.0166

Cited by 52 publications

(45 citation statements)

References 12 publications

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“…Though the WHO IMCI chart booklet recommends use of pulse oximetry when available, 12 many low-resource settings lack this tool. 37 38 However, the recent development of low-cost technologies for pulse oximetry, 39 including hardware attached to mobile phones, [40][41][42] may expand its use in resource-limited settings.…”

Section: Bmj Global Healthmentioning

confidence: 99%

An analysis of clinical predictive values for radiographic pneumonia in children

et al. 2020

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IntroductionHealthcare providers in resource-limited settings rely on the presence of tachypnoea and chest indrawing to establish a diagnosis of pneumonia in children. We aimed to determine the test characteristics of commonly assessed signs and symptoms for the radiographic diagnosis of pneumonia in children 0–59 months of age.MethodsWe conducted an analysis using patient-level pooled data from 41 shared datasets of paediatric pneumonia. We included hospital-based studies in which >80% of children had chest radiography performed. Primary endpoint pneumonia (presence of dense opacity occupying a portion or entire lobe of the lung or presence of pleural effusion on chest radiograph) was used as the reference criterion radiographic standard. We assessed the sensitivity, specificity, and likelihood ratios for clinical findings, and combinations of findings, for the diagnosis of primary endpoint pneumonia among children 0–59 months of age.ResultsTen studies met inclusion criteria comprising 15 029 children; 24.9% (n=3743) had radiographic pneumonia. The presence of age-based tachypnoea demonstrated a sensitivity of 0.92 and a specificity of 0.22 while lower chest indrawing revealed a sensitivity of 0.74 and specificity of 0.15 for the diagnosis of radiographic pneumonia. The sensitivity and specificity for oxygen saturation <90% was 0.40 and 0.67, respectively, and was 0.17 and 0.88 for oxygen saturation <85%. Specificity was improved when individual clinical factors such as tachypnoea, fever and hypoxaemia were combined, however, the sensitivity was lower.ConclusionsNo single sign or symptom was strongly associated with radiographic primary end point pneumonia in children. Performance characteristics were improved by combining individual signs and symptoms.

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Section: Bmj Global Healthmentioning

confidence: 99%

An analysis of clinical predictive values for radiographic pneumonia in children

et al. 2020

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“…Studies have concluded that smartphone applications can be beneficial in monitoring and evaluating patients [23][24][25], as well as increasing adherence to medical interventions [26,27]. The BUS approach offers the ability to take these studies further in understanding real-time use and overall time spent on apps as a factor that could contribute to health outcomes.…”

Section: Discussionmentioning

confidence: 99%

A Novel Approach to Evaluating Mobile Smartphone Screen Time for iPhones: Feasibility and Preliminary Findings (Preprint)

Gower¹,

Moreno²

2018

Preprint

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“…1 While frequently utilized by medical professionals, pulse oximeters are also available to the general public for use as a monitoring device, particularly for patients with COPD, asthma, pulmonary hypertension, and other respiratory conditions. 2 Non-medically trained individuals may use this technology as a monitoring tool for conditions such as dyspnea, sleep apnea, or cardiac arrythmias. 3 While home pulse oximetry is potentially useful, a potential barrier to its use is expense, especially for those with limited resources.…”

Section: Introductionmentioning

confidence: 99%

“…4 Some studies have shown this technology to be promising, and in cases involving healthy subjects, it was found to be noninferior to standard pulse oximetry devices. [2][3][4][5][6][7] Tomlinson et al 2 evaluated the accuracy of 2 different smartphone-based pulse oximetry apps (probe-based and camera-based) in healthy pediatric subjects. They reported that probe-based apps were more reliable and precise than camera-based apps.…”

Section: Introductionmentioning

confidence: 99%

Reliability of Smartphone Pulse Oximetry in Subjects at Risk for Hypoxemia

Modi

Kiourkas

et al. 2020

Respir Care

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BACKGROUND: Pulse oximeters are used to measure S pO 2 and heart rate. These devices are either standalone machines or integrated into physiologic monitoring systems. Some smartphones now have pulse oximetry capabilities. Because it is possible that some patients might utilize this technology, we sought to assess the accuracy and usability of smartphone pulse oximeters. METHODS: This was a prospective, observational study that involved noninvasive measurements of S pO 2 and heart rate with 3 devices: Masimo Radical-7, Kenek Edge with the Apple iPhone 6S, and the Samsung S8 smartphone. Ambulatory adult patients visiting our institution's pulmonary function lab for a 6-min walk test were eligible to participate in the study. Pretest and posttest results for each subject were obtained simultaneously using all 3 devices. All results were analyzed with the Spearman rho correlation test, and Bland-Altman plots were used to assess the agreement of measures between the devices. RESULTS: Forty-seven subjects were enrolled in the study, with pulmonary hypertension (30%) and COPD (23%) being the 2 major diagnoses. The mean 6 SD difference between the Masimo and Apple devices for pretest S pO 2 was 2.3 6 2.4%, and the difference for posttest S pO 2 was 2.1 6 3.9%. The mean difference between the Masimo and Samsung devices for pretest S pO 2 was 3.2 6 2.8%, and the difference for posttest S pO 2 was 2.4 6 3.5%. The number of subjects who were unable to obtain S pO 2 was higher with the Samsung device than with the Apple device in both pretest (14 of 47 vs 3 of 47) and posttest (17 of 47 vs 5 of 47). In contrast, the Masimo device was able to measure S pO 2 in all subjects. CONCLUSIONS: Smartphone pulse oximeters were unreliable compared to a hospital pulse oximeter. Further research is needed with evolving technology to better understand smartphone pulse oximetry. (ClinicalTrials.gov registration NCT03534271.

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Accuracy of Smartphone-Based Pulse Oximetry Compared with Hospital-Grade Pulse Oximetry in Healthy Children

Cited by 52 publications

References 12 publications

An analysis of clinical predictive values for radiographic pneumonia in children

An analysis of clinical predictive values for radiographic pneumonia in children

A Novel Approach to Evaluating Mobile Smartphone Screen Time for iPhones: Feasibility and Preliminary Findings (Preprint)

Reliability of Smartphone Pulse Oximetry in Subjects at Risk for Hypoxemia

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