Evaluation of Brachial Plexus Block With Plethysmographic Variability Index and Perfusion Index

Abstract

Background: Conventional methods for evaluation of block success are time consuming and need patient cooperation. The aim of this study was to evaluate whether the Perfusion Index and Plethysmographic Variability Index can be used to predict brachial nevre block success.
Materials and Methods: Thirty-four patients, aged 18-65 years, who were transferred to elective or emergency surgery were included. Brachial plexus block was applied. Those with cardiac disease, chronic obstructive pulmonary disease and asthma were excluded from the study. Bedside, non-invasive, serial plethysmographic variability index (PVI) and perfusion index (PI) measurements of the patients were made using the Radical-97 Pulse Oximeter device from the fourth finger tip of the blocked hand.
Results: When the PVI values measured from the blocked arm were compared; The difference between 0 and 5 minutes, 5th and 10th minutes and 0 to 10 minutes was statistically significant. When PI values were compared as 0 and 5 minutes, 5 and 10 minutes, 0 and 10 minutes, the changes were statistically significant. ( p<0.05).
Conclusion: In our study, it was seen that the changes in PI and PVI values were statistically significant. ( p<0.05) There was no statistically significant correlation between PVI and PI.

Key Words: Anaesthesia, Brachial Plexus Block, Hemodynamic Monitoring

Brakial Pleksus Bloğunun Pletismografik Variabilite İndeksi ve Perfüzyon İndeksi ile Değerlendirilmesi

Abstract

Amaç: Blok başarısının değerlendirilmesi kullanılan için geleneksel yöntemler zaman alıcıdır ve hasta kooperasyonuna ihtiyaç duyar. Bu çalışmanın amacı Perfüzyon İndeksi ve Pletismografik Variabilite İndeksinin brakiyal sinir blokajının başarısını tahmin etmek için kullanılıp kullanılamayacağını değerlendirmektir. Materyal ve metod: Bu çalışmaya 18-65 yaş arası, elektif veya acil cerrahi operasyona alınan 34 hasta dahil edildi. Brakial pleksus bloğu uygulandı. Kardiyak hastalığı, kronik obstrüktif akciğer hastalığı ve astım hastalığı olanlar çalışma dışı bırakıldı. Hastaların yatak başı, noninvaziv, seri pletismografik variabilite indeksi (PVI) ve perfüzyon indeksi (PI) ölçümleri, blok uygulanan elin dördüncü parmak ucundan Radical-97 Pulse Oksimetre cihazı kullanılarak yapıldı. Bulgular: Blok yapılan koldan ölçülen PVI değerleri karşılaştırıldığında; 0 ile 5. dk, 5. dk ile 10. dk ve 0 ile 10.dk arasındaki farklılık istatistiksel olarak anlamlı bulundu. PI değerleri 0 ve 5.dk, 5 ve 10.dk, 0 ve 10.dk olarak karşılaştırıldığında değişimler istatistiksel olarak anlamlı bulundu. ( p<0.05) Sonuç: Çalışmamızda PI ve PVI değerindeki değişimlerin istatistiksel olarak anlamlı olduğu görüldü. ( p<0.05) PVI ve PI arasında istatistiksel olarak anlamlı korelasyon saptanmadı.

Keywords

• Anestezi
• brakial pleksus blok
• hemodinamik takip

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