[Hypodermoclysis: a forgotten technique...].

Hypodermoclysis consists of infusing solutions in the subcutaneous tissues. It is a convenient means of correcting a moderate dehydration, notably in elderly people, when oral feeding is impossible or insufficient. The only potential problem with this technique is the occurrence of hypovolaemia due to infusion of hypo- or hypertonic solutions in subjects with previous severe salt and water disorders. For this reason, hypodermoclysis should not be used in emergencies.