Clinical Validation of a Digital Transcutaneous PCO2/SpO2 Ear Sensor in Adult Patients after Cardiac Surgery

Baulig, Werner; Schütt, Philipp; Roth, Hans Rudolf; Hayoz, J.; Schmid, Edith R.

doi:10.1007/s10877-007-9088-6

Cited by 10 publications

(20 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lowest rate of detection failure of 2% for SpO 2 and PR and an excellent agreement of SpO 2 and SaO 2 were found with the Nellcor N-595 device using a finger clip. These findings confirmed the results of our previous study [12].…”

Section: Discussionsupporting

confidence: 93%

“…However, this investigation was performed in medical patients with presumably constant body temperature attending lung function tests for assessment of home oxygen therapy. In a previous study [12] using the same sensor as Schafroth Török and colleagues [20] we reported unacceptably high limits of agreement for SpO 2 and SaO 2 in patients with stable haemodynamics during recovery after cardiac surgery.…”

Section: Discussionmentioning

confidence: 73%

“…The study is however limited in its explanatory power, since a small and particularly heterogeneous group of patients was included and because of methodological confinement of blood sampling. In a previous study [12], using an older version of the V-Sign [5,20] and is attributed primarily to the anaerobic factor, caused by heating the sensor area, and secondary to CO 2 production of living epidermal cells.…”

Section: Discussionmentioning

confidence: 99%

“…Monitors for combined continuous transcutaneous measurements of carbon dioxide tension and oxygen saturation have been investigated in recent years in healthy volunteers [18], during major surgery [19], in patients with severe pulmonary disease [5,20] and in critically ill adults [11,12,21], but the results regarding reliability were not conclusive. In 13 spontaneously breathing, not intubated patients in the early postoperative period, Fanelli and co-workers [21] reported only a unsatisfactory agreement of PtcCO 2 measured with a previous version of the V-Sign TM 2 earlobe sensor and PaCO 2 measured by co-oxymetry.…”

Section: Discussionmentioning

confidence: 99%

“…However, sensor preparation, positioning, taping, and the necessity for repeated calibration and repeated changes of the sensor's location because of drifting of the PtcCO 2 signal made handling cumbersome [4]. Additionally, the results of recently performed studies in neonates, infants and adults are controversial in terms of the reliability of these devices [6,[11][12][13]. In adults, clip sensors at the earlobe are routinely used because of its intense capillary perfusion.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Revised Digital Transcutaneous PCO2/SpO2 Ear Sensor Is a Reliable Noninvasive Monitoring Tool in Patients After Cardiac Surgery

Roediger

Beck‐Schimmer

Theusinger

et al. 2011

Journal of Cardiothoracic and Vascular Anesthesia

Self Cite

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Revised Digital Transcutaneous PCO2/SpO2 Ear Sensor Is a Reliable Noninvasive Monitoring Tool in Patients After Cardiac Surgery

Roediger

Beck‐Schimmer

Theusinger

et al. 2011

Journal of Cardiothoracic and Vascular Anesthesia

Self Cite

View full text Add to dashboard Cite

Transcutaneous continuous carbon dioxide tension monitoring reduced incidence, degree and duration of hypercapnia during combined regional anaesthesia and monitored anaesthesia care in shoulder surgery patients

Baulig

Keselj

Baulig

et al. 2014

J Clin Monit Comput

Self Cite

View full text Add to dashboard Cite

We studied the impact of transcutaneous continuous carbon dioxide tension (PtcCO2) monitoring on ventilation and oxygenation during monitored anaesthesia care (MAC) in patients scheduled for shoulder surgery with continuous interscalene block. 50 patients were randomised either to the intervention (I-group) or the control (C-group) group. In both groups MAC was performed using target controlled infusion of propofol and remifentanil. MAC regimen was adapted to PtcCO2 values in the I-group, whereas the C-group was blinded for these values. Primary outcome was the incidence, degree and duration of hypoventilation stages. In the I-group and the C-group the mean ± SD [range] of PtcCO2 and PaCO2 was 5.79 ± 0.84 [4.37] and 5.44 ± 0.59 [2.78] kPa, as well as 6.41 ± 1.17 [6.29] and 6.01 ± 0.96 [7.15] kPa. Periods of PtcCO2/PaCO2 > 6.5 kPa were 21.0 ± 35.7/1.2 ± 4.2 min in the I-group and 45.6 ± 40.0/18.6 ± 26.8 min in the C-group. Severe hypercapnia (PtcCO2 and/or PaCO2 > 7.5 kPa) was dected in 3/0 patients of the I-group and in 10/3 patients of the C-group. PtcCO2 and PaCO2 showed a strong correlation (r = 0.78), but only moderate agreement with a mean bias (LOA) of -0.37 (-1.69; +0.95) kPa showing an overestimation of the PaCO2. Sensitivity and specificity of PtcCO2 to detect changes of PaCO2 was 0.94 and 0.56, respectively. In no patient SpO2 or SaO2 values lower than 90% were measured. Despite a moderate agreement between PaCO2 and PtcCO2 the PtcCO2 monitoring significantly reduced incidence, degree and duration of hypercapnia in shoulder surgery patients with MAC.

show abstract

Short term general anesthesia for retro-bulbar block in ophthalmic surgery generates no significant hypercapnia

Baulig

Weber

Beck‐Schimmer

et al. 2017

J Clin Monit Comput

View full text Add to dashboard Cite

To assess the impact of short time hypnosis for retro-bulbar anesthesia on ventilation in patients undergoing ophthalmic surgery of the anterior eye chamber. In all patients, a combined continuous transcutaneous carbon dioxide tension (PtcCO) and partial oxygen saturation (SpO) measurement was applied in addition to routine monitoring. To enable unconscious application of retro-bulbar anesthesia, intravenous thiopental was given in one to multiple bolus doses. Transient breathing support included chin lift, Esmarch maneuver and manual hand-bag ventilation via face mask. Main endpoints were apnea time, recovery time according to the Richmond Agitation Sedation Scale, as well as SpO and PtcCO readings at predefined time points. Fifty-two patients with a mean age of 68 ± 13 years were included. Average thiopental dose was 2.7 ± 0.6 mg/kg. In seven (13.5%) patients repeated doses of thiopental were necessary to a total of 3.3 ± 1.1 mg/kg. Except one patient, no severe, significant or clinical relevant hypercapnia or desaturation periods were observed, and the occurring elevation of PtcCO values did not correlate with the application of repeated doses of thiopental or the need for the Esmarch maneuver. Higher PtcCO values were associated with the presence of hypertension and smoking. Apnea (p < 0.001) and recovery (p = 0.003) time were significantly prolonged in the patients needing the Esmarch maneuver. Short term anesthesia with thiopental in ophthalmic surgery is associated with a mild but not clinically relevant hypercapnia.

show abstract

Clinical Validation of a Digital Transcutaneous PCO2/SpO2 Ear Sensor in Adult Patients after Cardiac Surgery

Cited by 10 publications

References 18 publications

The Revised Digital Transcutaneous PCO2/SpO2 Ear Sensor Is a Reliable Noninvasive Monitoring Tool in Patients After Cardiac Surgery

The Revised Digital Transcutaneous PCO2/SpO2 Ear Sensor Is a Reliable Noninvasive Monitoring Tool in Patients After Cardiac Surgery

Transcutaneous continuous carbon dioxide tension monitoring reduced incidence, degree and duration of hypercapnia during combined regional anaesthesia and monitored anaesthesia care in shoulder surgery patients

Short term general anesthesia for retro-bulbar block in ophthalmic surgery generates no significant hypercapnia

Contact Info

Product

Resources

About