A Combined Ear Sensor for Pulse Oximetry and Carbon Dioxide Tension Monitoring: Accuracy in Critically Ill Children

Tschupp, Andres; Fanconi, Sergio

doi:10.1097/00000539-200301000-00017

Cited by 9 publications

(10 citation statements)

References 11 publications

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“…We attribute this to the warming of the measurement side resulting in an increased local perfusion and, hence, well-defined pulsatile signals [20]. In the present study in the peripherally well-perfused patients, the faster response time with regards to the SpO 2 values at the ear versus left index finger by an average of 30 s is mainly site related [22].…”

Section: Discussionmentioning

confidence: 73%

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Combined Pulse Oximetry/Cutaneous Carbon Dioxide Tension Monitoring during Colonoscopies: Pilot Study with a Smart Ear Clip

Heuss

Chhajed²,

Schnieper³

et al. 2004

Digestion

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Background: We compared the accuracy and practicability of a new combined ear sensor device measuring pulse oximetry and transcutaneous carbon dioxide tension. Methods: Validation studies were done by comparing the results of the combined sensor with arterial blood gas measurements. In an observational part, monitoring data were obtained from 25 patients undergoing colonoscopy, sedated with midazolam and alfentanil and from 8 patients without sedation. Results: There was an excellent correlation between the oxygen saturation and carbon dioxide tension measurements comparing the combined sensor with arterial blood gas analysis (R 0.96 and 0.93, respectively). A mean rise in transcutaneous carbon dioxide tension of 7.6 mm Hg was detectable during sedation with midazolam/alfentanil and of 2.3 mm Hg without sedation. Conclusion: Combined POX/PcCO₂ monitoring at the ear lobe is a novel approach to improve patient safety during sedation and may be helpful in preventing an unintentional slide into a state of deep sedation with impairment of ventilation.

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Section: Discussionmentioning

confidence: 73%

“…SpO 2 values are available immediately, while PcCO 2 values need a certain equilibration time. The system is designed to be ‘ready-for-use’ by automated recalibration every time the sensor is placed on the docking station between measurements [20]. …”

Section: Methodsmentioning

confidence: 99%

Combined Pulse Oximetry/Cutaneous Carbon Dioxide Tension Monitoring during Colonoscopies: Pilot Study with a Smart Ear Clip

Heuss

Chhajed²,

Schnieper³

et al. 2004

Digestion

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show abstract

“…Those initially available for clinical use in the 1980s included the combination of both TC-O 2 and TC-CO 2 monitors. More recently, TC-CO 2 monitors are available as a single TC-CO 2 electrode or as a combined pulse oximeter and TC-CO 2 monitor (Bendjelid et al 2005;Dullenkopf et al 2003;Tschupp and Fanconi 2003). The newer devices incorporate the two monitors into an earclip sensor which has found increased applications in the older pediatric and even the adult population.…”

Section: Educational Aimsmentioning

confidence: 99%

Classical Respiratory Monitoring

Cheifetz

Salyer

Schmalisch

et al. 2014

Pediatric and Neonatal Mechanical Ventilation

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“…These authors demonstrated that there is a linear relationship between cutaneous and true PaCO 2 in the range of 20 to 75 mmHg. At the turn of the new century, Rohling and Biro [24] and Tschupp and Fanconi [25] published the first articles on monitors that incorporated the elements of an optical pulse oximetry sensor with a Severinghaus-type PaCO 2 sensor [26]. Today, the transcutaneous non-invasive estimation of arterial PaCO 2 is commonly accepted and widely used.…”

Section: Non-invasive Measurement Of Blood Gasesmentioning

confidence: 99%

State-of-the-Art Sensor Technology in Spain: Invasive and Non-Invasive Techniques for Monitoring Respiratory Variables

Domingo

Blanch

Murias

et al. 2010

Sensors

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The interest in measuring physiological parameters (especially arterial blood gases) has grown progressively in parallel to the development of new technologies. Physiological parameters were first measured invasively and at discrete time points; however, it was clearly desirable to measure them continuously and non-invasively. The development of intensive care units promoted the use of ventilators via oral intubation ventilators via oral intubation and mechanical respiratory variables were progressively studied. Later, the knowledge gained in the hospital was applied to out-of-hospital management. In the present paper we review the invasive and non-invasive techniques for monitoring respiratory variables.

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A Combined Ear Sensor for Pulse Oximetry and Carbon Dioxide Tension Monitoring: Accuracy in Critically Ill Children

Abstract: A new combined ear sensor was tested for accuracy in 20 critically ill children. It provides noninvasive and continuous monitoring of arterial oxygen saturation, arterial carbon dioxide tension, and pulse rate. The sensor proved to be clinically accurate in the tested range.

Cited by 9 publications

References 11 publications

Combined Pulse Oximetry/Cutaneous Carbon Dioxide Tension Monitoring during Colonoscopies: Pilot Study with a Smart Ear Clip

Combined Pulse Oximetry/Cutaneous Carbon Dioxide Tension Monitoring during Colonoscopies: Pilot Study with a Smart Ear Clip

Classical Respiratory Monitoring

State-of-the-Art Sensor Technology in Spain: Invasive and Non-Invasive Techniques for Monitoring Respiratory Variables

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