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1999, Number 5

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Med Crit 1999; 13 (5)

Comparison of measurements of cardiac output by transesophageal bioimpedance thermodilution and a theoric equation. Comparative study

Cruz BS, Querevalú MW, Barragán MH, Martínez MJ, García RW

Language: Spanish
References: 15
Page: 165-168
PDF size: 104.48 Kb.


ABSTRACT

Objective: To establish a comparison between three methods to measure cardiac output in critically ill patients.
Design: Case series report.
Setting: ICU of a community hospital of Mexico City.
Patients: Fifty unstable ICU patients.
Interventions: None.
Measurements and main results: We measured cardiac output by transesophageal (EB), thermodilution (TD) and a theoric equation (TE, CO = 125 x BS/8.5 x C(a-v)O2, where: CO = cardiac output, L/min, 125 constant, BS = body surface, 8.5 = constant y C(a-v)O2 = arteriovenous oxygen content difference). Cardiac output measured by thermodilution was 10.2 ± 3.8 L/min, by EB 10.4 ± 3.6 L/min and by the theoric equation 6.2 ± 1.3 L/min (p ‹ 0.05).
Conclusion: CO measured by BE and by TD in this study was similar, but CO estimated by a equation was inexact.


REFERENCES

  1. . Huerta-Torrijos J, Lázaro C JL, Domínguez G LR, Sánchez Velázquez LD, Bautista BE. Comparación entre el gasto cardiaco (GC) medido por los métodos de termodilución (TD) y bioimpedancia eléctrica torácica. Rev Asoc Mex Med Crit y Ter Int 1996;10:214-217.

  2. Shoemaker WC, Wo ChCJ, Bishop MH et al. Multicenter trial of a new thoracic electrical bioimpedance device for cardiac output estimation. Crit Care Med 1994;22:1907-1924.

  3. Balestra B, Malacrida R, Leonarddi L, Suter P. Marone C. Esophageal electrodes allow precise assessment of cardiac output by bioimpedance. Crit Care Med 1992;20:62-67.

  4. Querevalú MWA, Rentería AMC, Chío MR, Morales CI. Hemopericardio secundario a perforación de ventrículo derecho. Informe de un caso. Rev Asoc Mex Med Crit y Ter Int 1995;9:20-22.

  5. Arrazola GF, Aponte UJM, Solórzano MJ. Bioimpedancia eléctrica transtorácica. Rev Asoc Mex Med Crit y Ter Int 1995;9:167-172.

  6. Querevalú MWA, Pérez CR, Chío MR,Morales CI. Estudio hemodinámico por bioimpedancia eléctrica torácica en pacientes pre y postrevascularizados de corazón. Rev Asoc Mex Med Crit y Ter Int 1995;9:46-48.

  7. Thrush DV. Spirometric versus Fick-derived oxygen consumption: Which method is better? Crit Care Med 1996;24:91:95.

  8. Stock MCh, Ryan ME. Oxygen consumption calculated from the Fick equation has limited utility. Crit Care Med 1996;24:86-90.

  9. Sánchez VlD. Comparación de dos fórmulas para calcular el gasto cardiaco contra el método de termodilución. Rev Asoc Mex Med Crit y Ter Int 1998;12:54-60.

  10. Cruz ME, Hernández-Rojas ME. Evaluación no invasiva del gasto cardíaco en pacientes críticos. Rev Asoc Mex Med Crit y Ter Int 1998;12:47-48.

  11. Cerón DUW, Mathieu VJP, Sierra UA, Martínez ZR. Utilidad del catéter de Swan-Ganz: estudio de casos y controles. Rev Asoc Mex Med Crit y Ter Int 1998;12:7-15.

  12. Cruz ME, Hernández-Rojas ME. Catéter arterial pulmonar: ¿Es útil en el manejo el paciente en estado crítico? Rev Asoc Mex Med Crit y Ter Int 1997;11:96-97.

  13. Huerta-Torrijos J, Bautista BE, Sánchez VLD. Catéter de la arteria pulmonar. ¿Se debe retirar de las unidades de terapia intensiva? Rev Asoc Mex Med Crit y Ter Int 1997;1:17-21.

  14. Pulmonary Artery Consensus Conference. Consensus Statement. New Hor 1997;5:173-174.

  15. Swan HJC, Ganz W, Forrester J et al. Catheterization of the heart in man with use of a flow-directed ballon-tipped catheter. N Engl J Med 1979;283:447-451.




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