Protocol-driven vs. physician-driven electrolyte replacement in adult critically ill patients

Area of Science:

• Critical Care Medicine
• Clinical Pharmacy
• Electrolyte Management

Background:

• Intensive care units (ICUs) are dynamic environments with potential for care variability.
• Protocol-driven interventions can standardize care for common issues like electrolyte imbalances.
• This study compares protocol-driven (PRD) versus physician-driven (PHD) electrolyte replacement in critically ill adults.

Purpose of the Study:

• To prospectively compare the efficiency and safety of protocol-driven versus physician-driven electrolyte replacement.
• To evaluate the impact of a standardized protocol on the timeliness and adequacy of potassium, magnesium, and phosphate replacement in ICU patients.

Main Methods:

• A two-month prospective study comparing PHD (month 1) and PRD (month 2) electrolyte replacement.
• Data collected included patient demographics, diagnoses, electrolyte levels, replacement timing, doses, and outcomes.
• ICU nurses administered PRD replacement according to protocol, while physicians ordered PHD replacement.

Main Results:

• Mean time from result availability to replacement was significantly shorter with PRD (19-26 min) vs. PHD (161-189 min) for potassium, phosphate, and magnesium (P<0.0001).
• The number of needed but unadministered replacements was significantly lower in the PRD period (P<0.05).
• No patients experienced high post-replacement serum electrolyte concentrations in either group, indicating comparable safety.

Conclusions:

• Protocol-driven electrolyte replacement is more efficient than physician-driven replacement in critically ill patients.
• PRD electrolyte replacement is as safe as PHD replacement, with no adverse events related to overcorrection.
• Implementing a protocol-driven strategy can improve the timeliness and consistency of electrolyte management in the ICU.