Transcutaneous PCO2 monitoring on adult patients in the ICU and the operating room

Tremper, Kevin K.; Shoemaker, William C.; Shippy, Clay; Nolan, Lorene S.

doi:10.1097/00003246-198110000-00017

Cited by 85 publications

(40 citation statements)

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“…However, this is corrected by a calibration factor used by current TC-CO 2 devices to calculate the TC-CO2 value based on the measured Pco 2 and the temperature of the electrode. TC devices that do not incorporate this calibration factor to account for changes in temperature do not provide the accuracy noted in our current study [7].…”

Section: Discussionmentioning

confidence: 66%

Noninvasive Monitoring of Carbon Dioxide in Infants and Children With Congenital Heart Disease: End-Tidal Versus Transcutaneous Techniques

Wilson

Russo

et al. 2005

J Intensive Care Med

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End-tidal CO2 (ET(CO2)) monitoring and transcutaneous (TC) CO2 monitoring were prospectively compared in 53 patients, 1 month to 16 years of age, with congenital heart disease (CHD). There were 32 patients with cyanotic CHD and 21 with acyanotic CHD. The TC-Pa(CO2) difference was 2 +/- 1 mm Hg and the ET-Pa(CO2) difference was 5 +/- 3 mm Hg (P < .0001). The TC-Pa(CO2) difference was < or = 2 mm Hg in 30 of 53 patients and < or = 5 mm Hg in 53 of 53 patients. The ET-Pa(CO2) difference was< or = 2 mm Hg in 9 of 53 patients and < or = 5 mm Hg in 30 of 53 patients (P < .001). No variation in the TC-Pa(CO2) difference was noted based on the type of CHD (acyanotic vs cyanotic) or age. The ET-Pa(CO2) difference was greater in patients with cyanotic versus acyanotic CHD (7 +/- 3 mm Hg vs 4 +/- 2 mm Hg, P < .0001) and in patients < or = 1 year of age versus patients > or = 1 year of age (6 +/- 3 mm Hg vs 4 +/- 2, P = .008). In infants and children with CHD, TC monitoring provides a more accurate estimation of Pa(CO2) than ET monitoring.

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Section: Discussionmentioning

confidence: 66%

Noninvasive Monitoring of Carbon Dioxide in Infants and Children With Congenital Heart Disease: End-Tidal Versus Transcutaneous Techniques

Wilson

Russo

et al. 2005

J Intensive Care Med

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“…CO 2 gradient, which may lead one to question the validity and utility of such technology (Tremper et al 1981). …”

Section: Educational Aimsmentioning

confidence: 99%

“…In the previously mentioned study evaluating the correlation of TC and arterial CO 2 in patients with CHD following cardiovascular surgery, it was noted that TC-CO 2 monitoring could not be used in patients receiving high doses of inotropic agents that resulted in peripheral vasoconstriction and/or in those with poor peripheral perfusion (Tobias et al 1999). The impact of hemodynamic instability with poor tissue perfusion on TC-CO 2 monitoring has also been reported in a group of adult patients from a mixed operating room and ICU setting (Tremper et al 1981). When the cardiac index was ≤1.5 L/min/m 2 , there was an increase in the TC to arterial CO 2 gradient.…”

Section: Evaluation Of Tissue Perfusionmentioning

confidence: 99%

Classical Respiratory Monitoring

Cheifetz

Salyer

Schmalisch

et al. 2014

Pediatric and Neonatal Mechanical Ventilation

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“…Changes in gas substances peculiar to the human body, such as carbon dioxide, oxygen and humidified air, play an important role in the analysis of the physical state of a human body and decreasing cerebral functions [1][2][3][4][5][6][7][8]. A typical time constant (= time resolution) for commonly used medical human respiration sensing devices, e.g., the capnograph, is about 200 msec (e.g., TG-920P Nihon Koden co.).…”

Section: Introductionmentioning

confidence: 99%

The Precise Mechanisms of a High-Speed Ultrasound Gas Sensor and Detecting Human-Specific Lung Gas Exchange

Toda

2012

International Journal of Advanced Robotic Systems

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In this paper, we propose and develop a new real-time human respiration process analysis method using a high-time-sampling gas concentration sensor based on ultrasound. A unique point about our proposed gas concentration sensor is its 1 kHz gas concentration sampling speed. This figure could not have been attained by previously proposed gas concentration measurement methods such as InfraRed, semiconductor gas sensors, or GC-MS, because the gas analysis speeds were a maximum of a few hundred milliseconds. First, we describe the proposed new ultrasound sound speed measurement method and the signal processing, and present the measurement circuit diagram. Next, we analyse the human respiration gas variation patterns of five healthy subjects using a newly developed gas-masktype respiration sensor. This reveals that the rapid gas exchange from H2O to CO2 contains air specific to the human being. In addition, we also measured medical symptoms in subjects suffering from asthma, hyperventilation and bronchial asthma. The millisecond level high-speed analysis of the human respiration process will be useful for the next generation of healthcare, rehabilitation and sports science technology.

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Transcutaneous PCO2 monitoring on adult patients in the ICU and the operating room

Cited by 85 publications

References 0 publications

Noninvasive Monitoring of Carbon Dioxide in Infants and Children With Congenital Heart Disease: End-Tidal Versus Transcutaneous Techniques

Noninvasive Monitoring of Carbon Dioxide in Infants and Children With Congenital Heart Disease: End-Tidal Versus Transcutaneous Techniques

Classical Respiratory Monitoring

The Precise Mechanisms of a High-Speed Ultrasound Gas Sensor and Detecting Human-Specific Lung Gas Exchange

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