Background: Fluids are vital to all forms of life; they help maintain body temperature and
cell shape, and they help transport nutrients, gases, and waste. Electrolytes play a vital role in
maintaining homeostasis within the body. Nurses are responsible for monitoring fluid and
electrolyte balance among cardiac surgery patients. Therefore, their knowledge and practice of fluid
and electrolyte balance prevent serious complications after cardiac surgery. Aim of the study: The
study aimed to assess fluid and electrolyte monitoring among nurses in the ICU of the
Cardiothoracic Surgery Unit. Research design: A Descriptive research design was utilized.
Setting: The study was conducted in the ICU of the Cardiothoracic Surgery Unit, Benha University
Hospital. Subject: A Purposive sample of 40 nurses who are working in the ICU of Cardiothoracic
Surgery Unit at Benha University Hospital was taken from both sexes, their ages ranged from 30-
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