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1.
Korean Journal of Anesthesiology ; : 571-576, 2007.
Artigo em Coreano | WPRIM | ID: wpr-218881

RESUMO

BACKGROUND: The phase relationship indicates the time delay between the input signal (systolic blood pressure, SBP) and output signal (R-R interval, RRI). In contrast to the awake state, little is known about the effects of general anesthesia on the phase shift. In the present study, we tested the hypothesis that sevoflurane anesthesia causes a phase change between the two signals. METHODS: We assessed changes in phase, coherence, and baroreflex sensitivity between SBP and RRI by the use of transfer function analysis in 50 ASA 1 patients during the awake state and during end-tidal 2% sevoflurane-50% N2O anesthesia. RESULTS: SBP and RRI decreased significantly during sevoflurane anesthesia (P < 0.001). The phase in the low frequency (LF) region remained unchanged, but the phase in the high frequency (HF) region changed significantly from -29.52 +/- 50.70 to 27.28 +/- 80.22 degrees during sevoflurane anesthesia (P < 0.001). Coherence and baroreflex sensitivity between the two signals in the LF and HF regions decreased significantly during sevoflurane anesthesia (P < 0.001, respectively). CONCLUSIONS: We found that in the HF region and not in the LF region, sevoflurane anesthesia provokes the shift of the SBP-RRI phase relationship, suggesting that this change is inconsistent with a vagally mediated response.


Assuntos
Humanos , Anestesia , Anestesia Geral , Barorreflexo , Pressão Sanguínea , Frequência Cardíaca , Coração
2.
Korean Journal of Anesthesiology ; : 702-706, 2007.
Artigo em Coreano | WPRIM | ID: wpr-98990

RESUMO

Stroke is one of the most common causes of death; in particular, cardiac source of embolism may be responsible for 15-20% of ischemic strokes. Here we report a case of left atrial thrombus diagnosed by transesophageal echocardiography (TEE) immediately after induction of general anesthesia in a patient with infarction of the middle cerebral artery. In this case, an emergent craniectomy was cancelled and medical treatment was performed. This case report shows that TEE taken in the operating room may play an important role in the change of treatment plan in a patient displaying acute mental change.


Assuntos
Humanos , Anestesia Geral , Causas de Morte , Ecocardiografia Transesofagiana , Embolia , Infarto , Infarto da Artéria Cerebral Média , Artéria Cerebral Média , Salas Cirúrgicas , Acidente Vascular Cerebral , Trombose
3.
Korean Journal of Anesthesiology ; : 351-354, 2006.
Artigo em Coreano | WPRIM | ID: wpr-160839

RESUMO

We encountered two bladder cancer patients who suffered from perineal pain that was intractable despite the use of adjuvant medication. A phenol intrathecal (saddle) block was performed without any specific complications. The results were excellent and allowed the systemic opiate dose to be reduced by more than 80%. We report our clinical experience, including a brief review of the relevant literature.


Assuntos
Humanos , Fenol , Neoplasias da Bexiga Urinária , Bexiga Urinária
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