A review of normal saline instillation: implications for practice

Area of Science:

• Respiratory Care
• Nursing Practice
• Critical Care Medicine

Background:

• Normal saline instillation (NSI) is frequently used by nurses during endotracheal suctioning.
• The clinical benefits of routine NSI are not well-established in current literature.
• Concerns exist regarding potential harm associated with NSI.

Purpose of the Study:

• To review the current evidence on the efficacy and safety of normal saline instillation.
• To investigate the rationale behind the common use of NSI in clinical practice.
• To highlight potential negative effects and suggest alternative airway humidification strategies.

Main Methods:

• Literature review of studies examining normal saline instillation in suctioning.
• Analysis of research investigating the impact of NSI on secretion removal and airway health.
• Exploration of the presumed indications for NSI in managing thick endotracheal secretions.

Main Results:

• Limited positive outcomes identified for normal saline instillation.
• Evidence suggests NSI may pose risks to patients.
• Insufficient research exists on the specific reasons for its continued use.

Conclusions:

• Nurses should be informed about the potential adverse effects of routine NSI.
• Alternative methods for maintaining adequate airway humidification should be considered.
• Evidence-based practice should guide the use of NSI in respiratory care.