Brazilian Journal of Anesthesiology
https://app.periodikos.com.br/journal/rba/article/doi/10.1590/S0034-70942003000500011
Brazilian Journal of Anesthesiology
Clinical Information

O uso do analisador de anestésicos inalatórios como método de detecção de falha no aparelho de anestesia e prevenção de consciência no per-operatório: relato de caso

Inhalational anesthetics analyzer as a method to detect anesthesia machine failures and prevent intraoperative awareness: case report

Marcos Guilherme Cunha Cruvinel; Carlos Henrique Viana de Castro; José Roberto de Rezende Costa

http://dx.doi.org/10.1590/S0034-70942003000500011 Braz J Anesthesiol, vol.53, n5, p.640-645, 2003
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Resumo

JUSTIFICATIVA E OBJETIVOS: A consciência per-operatória é uma rara, mas grave, complicação da anestesia geral. O mau funcionamento do aparelho de anestesia é uma das diversas causas das complicações anestésicas, dentre elas a consciência per-operatória. O objetivo deste relato é mostrar um caso em que o uso do analisador de anestésicos inalatórios proporcionou o diagnóstico de uma falha no aparelho de anestesia que poderia ter causado consciência no per-operatório. RELATO DO CASO: Paciente do sexo feminino, 38 anos, 55 kg, estado físico ASA I, portadora de carcinoma na mama direita, admitida para mastectomia radical e reconstrução mamária com retalho miocutâneo. Foi realizada punção peridural em T8-T9 com agulha 17G com introdução de cateter e administração de ropivacaína a 0,2%. Seguiu-se indução de anestesia geral com início de vaporização de sevoflurano. Apesar dos outros parâmetros de monitorização não terem acusado achados de relevância, o analisador de anestésicos inalatórios não identificou a presença de sevoflurano, o que conduziu ao diagnóstico de um vazamento no vaporizador. CONCLUSÕES: A consciência per-operatória é uma complicação que, apesar de rara, é grave e deve ser prevenida. As falhas do equipamento de anestesia podem ser minimizadas por sua inspeção, com testes detalhados e rotineiros antes do seu uso. O analisador de anestésicos inalatórios é um monitor útil sempre que estes estejam sendo utilizados e um instrumento útil para detectar precocemente falhas no equipamento de anestesia, como exemplificado no caso relatado.

Palavras-chave

COMPLICAÇÕES, EQUIPAMENTOS

Abstract

BACKGROUND AND OBJECTIVES: Although rare, intraoperative awareness is a severe general anesthesia complication. Anesthesia machine malfunction is one of several causes for anesthetic complications, among them intraoperative awareness. This report aimed at showing a case where the volatile anesthetic monitor has detected machine malfunction which could have led to intraoperative awareness. CASE REPORT: Female patient, 38 years old, 55 kg, physical status ASA I, with right breast cancer, admitted for radical mastectomy and immediate myocutaneous flap reconstruction. Epidural puncture was performed at T8-T9 with a 17-gauge Tuohy epidural needle followed by the introduction of 18-gauge epidural catheter and administration of 0.2% ropivacaine. General anesthesia was then induced, followed by sevoflurane vaporization. Although other monitoring parameters have not detected relevant findings, the inhalational anesthetic monitor has not identified the presence of sevoflurane, thus allowing the diagnostic of vaporizer leakage. CONCLUSIONS: Although rare, intraoperative awareness is a severe complication which should be prevented. Routine and thorough anesthesia equipment inspection before its use may minimize failures. The inhalational anesthetics monitor is useful whenever inhaled anesthetics are being used and may early detect anesthesia machine failures as in this case report.

Keywords

COMPLICATIONS, EQUIPMENTS

References

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