cap-ONE Information

Vol.3

Optimal respiratory
monitoring during
sedation for all patients
cap-ONE mask fitsdifferent face shapes and sizes
Patient benefits from capnography monitoring as recommended by
ASA and APSF Guidelines

Currently clinical guidelines, including those of the American Society of Anesthesiologists (ASA) and Anesthesia
Patient Safety Foundation (APSF), recommend capnography as one of the most reliable non-invasive methods tocontinuously monitor and assess the adequacy of the patient’s respiratory condition during procedural sedationand analgesia.1,2 Favorable benefits to patient’s safety which may be associated with using capnography have also
been shown.3 Capnography is becoming more widely adopted as a means to detect respiratory depression andavoid serious complications in all care levels including ER, OR, ICU and recovering room.

cap-ONE mask enhances patient safety

cap-ONE mask is an oxygen mask with integrated cap-ONE mainstream capnometer sensor (TG-980P, Nihon
Kohden). It can measure end-tidal carbon dioxide (ETCO2) while supplying oxygen thanks to a unique design
which catches the exhaled gas from the nose and mouth without interference from the oxygen supply.

Oxygen flow
Oxygen is diffused toprevent interferencewith expired CO2.

Scatter plate

CO2 flow

CO2 sensor

Excess CO2 flows out.
The curved shape gives better oxygen flow.

Both oral and nasal expiration is measured.

Efficient oxygen supply while measuring ETCO2
cap-ONE mask has a unique structure designed to measure ETCO2 while supplying oxygen. This structure keeps oxygen concentration inside the mask
consistent and stable.4

cap-ONE Information Vol.3

Performance of cap-ONE mask in measuring ETCO2 and supplying oxygen
Accurate ETCO2 monitoring at high oxygen flow

The accuracy of non-invasive CO2 monitoring can be influenced by several factors including oxygen flow rate, tidal
volume and measurement site (oral or nasal). The performance of cap-ONE mask to measure ETCO2 duringoxygen administration has been evaluated using a breathing simulator (ASL5000, IngMar Medical, USA).
Nasal breathing O2 6L/min

cap-ONE

200Reference

PCO2 [mmHg]

PCO2 [mmHg]

Reference
40030

Time [s]Oral breathing O2 6L/min

cap-ONE

40200030

Time [s]Capnogram of spontaneously breathing model from nasal

Capnogram of spontaneously breathing model from oral

Simulation evaluation of CO2 measurement performance of cap-ONE mask
As shown in the graphs above, relatively high quality capnogram was obtained by cap-ONE mask at high flow oxygen (6 L/min) in both nasal and oral
simulation evaluation (tidal volume 500 ml, RR 12/min).

Efficient oxygenation with cap-ONE mask
The efficacy of cap-ONE mask was also evaluated using
the same simulator. cap-ONE mask provided FiO2 ofabout 40% at oxygen flow of 2 L/min. The cap-ONE
mask FiO2 was comparable to FiO2 of conventional nasal
oxygen cannula and oxygen mask.5

cap-ONE mask suits all face shapes

A 3-D digital scan (Kinect, Microsoft, WA) was used
to measure the facial features of individuals of different
ages, gender and ethnicities including Asian, Hispanic,
Caucasian and African American. Next, we confirmed
whether gaps between the cap-ONE mask and different
parts of the face such as nose, chin, and cheek aresufficiently minimal so that the mask can accurately
measure CO 2 and supply oxygen for different faceshapes.

Oxygen flow
[L/min]cap-ONE mask
FiO2 [%]

Nasal oxygen
cannula FiO2 [%]282403-32445365-40650447-855

Oxygen mask
FiO2 [%]

405060An inside cup which catches
expired gas from nose or mouth.

The inside cup is adjustable so that it
fits different face shapes and sizes.

cap-ONE mask product line
CO2 sensor kit oxygen mask

YG-242T (V935)
infantYG-232T (V933)
pediatric

YG-272T (V983A)
adult

YG-282T (V983C)
adult, large

References
1. Tobergte DR, Curtis S. STANDARDS FOR BASIC ANESTHETIC MONITORING. J Chem Inf Model. 2013;53(9):1689-1699.
2. Ray R. Maddox, PharmD Jarred Callura, BS Amy E. Herrin, MS Craig Henriquez P. Clinical Experience with Capnography Monitoring for PCA Patients. 2012:47-50.
3. Conway A, Douglas C, Sutherland JR. A systematic review of capnography for sedation. Anaesthesia. 2016;71(4):450-454.
4. Abe. S et al. 2010. Japanese Society of Pediatric Intensive and Critical Care. A novel method for mainstream capnometer. Presentation. November.
5. Shapiro, B. A., Kacmarek, R. M., Cane, R. D., & Hauptman, D. (1991). Clinical application of respiratory care (4th ed.). St. Louis, MO: Mosby.

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