Ultrasonographic Evaluation of the Effect of Positive End-expiratory Pressure on Diaphragmatic Functions in Patients Undergoing Laparoscopic Colorectal Surgery: A Prospective Randomized Comparative Study

Doaa Abou El Kassim Rashwan^1*, Hatem Elmoutaz Mahmoud¹, Walid Hamed Nofal² and Eman Ahmed Sabek³

¹Department of Anesthesiology, Surgical ICU and Pain Management, Faculty of Medicine, Beni Suef University, 62511, Egypt

²Department of Anesthesiology, Surgical ICU and Pain Management, Faculty of Medicine, Ain Shams University, 11591, Egypt

³National Centre of Radiation and Research Technology, 13759, Egypt

^*Corresponding Author: Doaa Abou El Kassim Rashwan, Department of Anesthesiology, Surgical ICU and Pain Management, Faculty of Medicine, Beni Suef University, 62511, Egypt, Tel: 00201011270763 Email:

Keywords: Diaphragmatic function, Laparoscopic colorectal surgery, Positive end-expiratory pressure, Ultrasound

Introduction