Subcutaneous Hydration Protocol for Dehydration

Assessment of Dehydration

Dehydration should be diagnosed using measured serum or plasma osmolality >300 mOsm/kg (or calculated osmolarity >295 mmol/L) in patients with symptoms of dehydration, according to the Clinical Nutrition guidelines 1, 3
For volume depletion assessment in older adults, look for at least four of these seven signs: confusion, non-fluent speech, extremity weakness, dry mucous membranes, dry tongue, furrowed tongue, and sunken eyes, as recommended by the Clinical Nutrition guidelines 4
In cases of blood loss, assess for postural pulse change (30 beats per minute) or severe postural dizziness resulting in inability to stand, as suggested by the Clinical Nutrition guidelines 4

Mild to moderate dehydration in patients who appear unwell is an indication for subcutaneous hydration, according to the Clinical Nutrition guidelines 1, 2
Subcutaneous hydration is particularly beneficial for older adults and patients receiving palliative care, as stated by the Clinical Nutrition guidelines 5

Isotonic fluids should be used for rehydration in patients with dehydration, as recommended by the Clinical Nutrition guidelines 1, 2
Recommended solutions include half-normal saline-glucose 5% (40 g/L dextrose and 30 mmol/L NaCl), 5% dextrose solution with 4 g/L NaCl, and two-thirds 5% glucose and one-third normal saline, according to the Clinical Nutrition guidelines 1, 3

Re-siting of infusion may be required (13% of cases compared to 23% for IV) due to complications such as local edema, as reported by the Clinical Nutrition guidelines 3, 6
Agitation related to fluid provision is significantly less common with subcutaneous (37%) than with intravenous (80%) administration, according to the Clinical Nutrition guidelines 3, 6

For severe dehydration or when greater fluid volumes are needed, intravenous fluid administration should be considered, as recommended by the Clinical Nutrition guidelines 1, 2
Continue to encourage oral fluid intake in parallel with subcutaneous hydration when possible, according to the Clinical Nutrition guidelines 1, 2
Contraindications for subcutaneous hydration include coagulation disorders, dermatological problems at the infusion site, and severe malnutrition with lack of subcutaneous tissue, as stated by the Clinical Nutrition guidelines 5

Reassess hydration status regularly until corrected, as recommended by the Clinical Nutrition guidelines 1
Once dehydration is resolved, transition to oral hydration with preferred beverages when possible, according to the Clinical Nutrition guidelines 3
For older adults in institutions, implement multicomponent strategies to support adequate fluid intake, as suggested by the Clinical Nutrition guidelines 3, 6