M.Sc. thesis, submitted by Sanaa Lotfy Abdel Ghan entitled" CRITICAL CARE NURSES KNOWLEDGE AND PRACTICES REGARDING SELECTED INVASIVE CONNECTIONS IN PATIENTS UNDERGOING CABG AT CAIRO UNVERSITY HOSPITALS"" under supervision of: Prof. Dr/ Susan Attia Abdel Sayed, Prof. of Medical Surgical Nursing, Faculty of Nursing, Cairo University, : . Ass. Prof. Dr/ Manal Mohamed Mustafa Ass. prof of Medical Surgical Nursing, Faculty of Nursing, Cairo University,Dr./Amel Gomaa Abdel Naby prof of Medical Surgical Nursing, Faculty of Nursing, Cairo University, The judging panel and discussion committee is composed of: Prof. Dr/ Camellia Fouad, Prof. of Medical Surgical Nursing, Faculty of Nursing, Ain Shams University Prof. Dr/ khirya El- Sawy, prof .of Medical Surgical Nursing, Faculty of Nursing, Vice Dean for Graduate Studies Faculty of Nursing, Cairo University And Ass. Prof. Dr/ Manal Mohamed Mustafa Ass. prof of Medical Surgical Nursing, Faculty of Nursing, Cairo University