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El analizador de lactato es una tecnología que se utiliza para calcular la cantidad de lactato en la sangre, y por tanto poder medir en que punto de nuestro entrenamiento nos encontramos. Con el resultado, más el cálculo de intensidad y tiempo de entrenamiento podemos calcular en qué punto nos encontramos de nuestras fases metabólicas.

En nuestro caso hemos utilizado el lactate pro 2 para calcularlo, se debe utilizar las tiras reactivas, las cuales introduciremos dentro del analizador. Una vez introducido, pondremos en el extremo de las tiras 0,3 microlitros de sangre. Antes de poner la sangre en el analizador se debe haber limpiado la primera gota de sangre para luego empezar la prueba.

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En el siguiente artículo se investigó la precisión de un dispositivo de mano para analizar el lactato en sangre en pacientes de cuidados intensivos y en sujetos sanos. El dispositivo elegido fue Lactate Pro 2 (con el cual hicimos las prácticas en clase). Para ello, se comparó con un dispositivo de referencia fijo en un hospital. Se extrajeron muestras de sangre arterial, venosa y capilar de las yemas de los dedos y de los lóbulos de las orejas para comprobar, como objetivo secundario, si existía diferencia o importancia significativa el lugar de extracción de sangre.

Se concluyó que el Lactate Pro 2 obtuvo concordancia de resultados con el dispositivo de referencia en sangre arterial en ambos grupos, pero no tan buena en sangre venosa. Y referente al segundo objetivo, se demostró que el lóbulo de la oreja puede ser un lugar más indicado para la toma de sangre en pacientes con cuidados intensivos.

Raa, A., Sunde, G. A., Bolann, B., Kvåle, R., Bjerkvig, C., Eliassen, H. S., Wentzel-Larsen, T., & Heltne, J. K. (2020). Validation of a point-of-care capillary lactate measuring device (Lactate Pro 2). Scandinavian journal of trauma, resuscitation and emergency medicine, 28(1), 83. https://doi.org/10.1186/s13049-020-00776-z

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doi: 10.1186/s13049-020-00776-z.

Affiliations

¹ University of Bergen, Vognstølen 18 C, 5096, Bergen, Norway. anette.raa@live.no.

² Department of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway.

³ Helicopter Emergency Medical Services, Bergen, Norway.

⁴ Department of Clinical Science, University of Bergen, Bergen, Norway.

⁵ Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway.

⁶ Department of Clinical Medicine, University of Bergen, Bergen, Norway.

⁷ Norwegian Navy Special Operations Commando, Norwegian Armed Forces, Bergen, Norway.

⁸ Haraldsplass Diaconal Hospital, Bergen, Norway.

⁹ Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, Oslo, Norway.

¹⁰ Norwegian Centre of Violence and Traumatic Stress Studies, Oslo, Norway.

¹¹ Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway.

Free PMC article

Free PMC article

doi: 10.1186/s13049-020-00776-z.

Affiliations

¹ University of Bergen, Vognstølen 18 C, 5096, Bergen, Norway. anette.raa@live.no.

² Department of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway.

³ Helicopter Emergency Medical Services, Bergen, Norway.

⁴ Department of Clinical Science, University of Bergen, Bergen, Norway.

⁵ Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway.

⁶ Department of Clinical Medicine, University of Bergen, Bergen, Norway.

⁷ Norwegian Navy Special Operations Commando, Norwegian Armed Forces, Bergen, Norway.

⁸ Haraldsplass Diaconal Hospital, Bergen, Norway.

⁹ Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, Oslo, Norway.

¹⁰ Norwegian Centre of Violence and Traumatic Stress Studies, Oslo, Norway.

¹¹ Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway.

Abstract

Background: The measurement of lactate in emergency medical services has the potential for earlier detection of shock and can be performed with a point-of-care handheld device. Validation of a point-of-care handheld device is required for prehospital implementation.

Aim: The primary aim was to validate the accuracy of Lactate Pro 2 in healthy volunteers and in haemodynamically compromised intensive care patients. The secondary aim was to evaluate which sample site, fingertip or earlobe, is most accurate compared to arterial lactate.

Methods: Arterial, venous and capillary blood samples from fingertips and earlobes were collected from intensive care patients and healthy volunteers. Arterial and venous blood lactate samples were analysed on a stationary hospital blood gas analyser (ABL800 Flex) as the reference device and compared to the Lactate Pro 2. We used the Bland-Altman method to calculate the limits of agreement and used mixed effect models to compare instruments and sample sites. A total of 49 intensive care patients with elevated lactate and 11 healthy volunteers with elevated lactate were included.

Results: There was no significant difference in measured lactate between Lactate Pro 2 and the reference method using arterial blood in either the healthy volunteers or the intensive care patients. Capillary lactate measurement in the fingertip and earlobe of intensive care patients was 47% (95% CI (29 to 68%), p < 0.001) and 27% (95% CI (11 to 45%), p < 0.001) higher, respectively, than the corresponding arterial blood lactate. In the healthy volunteers, we found that capillary blood lactate in the fingertip was 14% higher than arterial blood lactate (95% CI (4 to 24%), p = 0.003) and no significant difference between capillary blood lactate in the earlobe and arterial blood lactate.

Conclusion: Our results showed that the handheld Lactate Pro 2 had good agreement with the reference method using arterial blood in both intensive care patients and healthy volunteers. However, we found that the agreement was poorer using venous blood in both groups. Furthermore, the earlobe may be a better sample site than the fingertip in intensive care patients.

Keywords: Lactate; Point-of-care; Shock.

Conflict of interest statement

The authors declare no competing interests.

Convergent validity of a simplified device and relationship between blood lactate and salivary lactate after a vertical squat jump in healthy non-athletes.

Okano S, Nishizawa H, Yui J; PTS, Yokokawa Y, Koinuma M, Nakamura A. Okano S, et al. J Phys Ther Sci. 2021 Mar;33(3):187-193. doi: 10.1589/jpts.33.187. Epub 2021 Mar 17. J Phys Ther Sci. 2021. PMID: 33814702 Free PMC article.

References

Barbee RW, Reynolds PS, Ward KR. Assessing shock resuscitation strategies by oxygen debt repayment. Shock. 2010;33(2):113-122. - PubMed

Hooper TJ, De Pasquale M, Strandenes G, Sunde G, Ward KR. Challenges and possibilities in forward resuscitation. Shock. 2014;41(Suppl 1):13-20. - PubMed

Holler JG, Bech CN, Henriksen DP, Mikkelsen S, Pedersen C, Lassen AT. Nontraumatic hypotension and shock in the emergency department and the prehospital setting, prevalence, etiology, and mortality: a systematic review. PLoS One. 2015;10(3):e0119331. - PMC - PubMed

Vincent JL, De Backer D. Circulatory shock. N Engl J Med. 2014;370(6):583. - PubMed

Andersen LW, Mackenhauer J, Roberts JC, Berg KM, Cocchi MN, Donnino MW. Etiology and therapeutic approach to elevated lactate levels. Mayo Clin Proc. 2013;88(10):1127-1140. - PMC - PubMed

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national center for biotechnology information

# data[].attributes.attachment_link.title
Validation of a point-of-care capillary lactate measuring device (Lactate Pro 2) - PubMed

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Our results showed that the handheld Lactate Pro 2 had good agreement with the reference method using arterial blood in both intensive care patients and healthy volunteers. However, we found that the agreement was poorer using venous blood in both groups. Furthermore, the earlobe may be a better sam ...

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Para este dispositivo hemos querido analizar la cantidad de concentración de lactato en sangre en un competidor de triatlón en los diferentes deportes de la prueba (Natación, carrera y ciclismo), a distintas intensidades con el fin de comprobar en cuál de las tres disciplinas se concentra mayor cantidad de lactato para poder entrenar en dicha intensidad o prueba, y ser capaz de bajar esa concentración y retrasar la fatiga.

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En el siguiente video se explica como usar el dispositivo con imágenes y demostraciones.