Obezitede Anestezi Yönetimi
Özet
Bu çalışma, küresel ölçekte artış gösteren obezite olgularında cerrahi müdahaleler öncesi, sırası ve sonrasında uygulanan anestezi yönetiminin temel esaslarını ve patofizyolojik süreçlerini kapsamlı bir şekilde incelemektedir. Obezitenin patofizyolojisi, enerji alımı ve harcanması arasındaki dengesizlikten kaynaklanmakta olup hipotalamus, dopaminerjik yolaklar ve hormonlar (leptin, adiponektin) gibi merkezi ve periferik mekanizmalarla düzenlenmektedir. Obezite; Tip 2 diyabetes mellitus, hipertansiyon, kalp yetmezliği, obstrüktif uyku apnesi sendromu (OSAS), astım, karaciğer yağlanması, kronik böbrek rahatsızlıkları ve çeşitli kanser türleri gibi çok sayıda medikal komplikasyona yol açmaktadır. Preoperatif dönemde hastaların kardiyopulmoner, metabolik, kas-iskelet ve psikolojik yönden ayrıntılı değerlendirilmesi, EKG çekilmesi ve havayolu anatomisindeki değişikliklere bağlı güçlüklerin önceden saptanması hayati önem taşır. İntraoperatif süreçte hastaya rampa veya lateral gibi uygun pozisyon verilmesi, supin pozisyonun getirdiği olumsuzlukların önlenmesi, videolaringoskopi desteğiyle zor havayolu yönetimi yapılması ve anestetik ilaç dozlarının total vücut ağırlığı yerine ideal ya da yağsız vücut ağırlığına göre titizlikle ayarlanması gerekmektedir. Kısa etkili anestetiklerin seçimi ve nöromusküler blok monitorizasyonu derlenme sürecini hızlandırıp emniyetini artırır. Postoperatif dönemde ise sürekli solunum desteği, kardiyak izlem, düşük moleküler ağırlıklı heparin ile tromboemboli profilaksisi ve multimodal analjezi yöntemleri ile hastanın güvenliği sağlanmalıdır. Sonuç olarak obez hastalarda anestezi yönetimi, her hasta için bireyselleştirilmiş multidisipliner ve aşamalı bir yaklaşım gerektirmektedir.
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