Comparative Measurements of Interface Pressures Between Two Pressure-ulcer Prevention Mattresses: Softform Premier and Airsoft Duo

The secondary objectives of the study are to compare the two devices in terms of:

A. contact surface. B. heel pressure. C. On the occurrence of pressure ulcers anywhere on the body at month 1. D. patient comfort after 1 month (visual analog scale ranging from 1 to 10).

Inclusion criteria

• The patient must have given his/her informed and signed consent
• The patient must be insured or beneficiary of a health insurance plan
• The patient spends more than 12 hours in bed with a possible verticalization and a predictable length of stay of at least 1 month.
• The patient has a stable medical condition (no complications in the last 10 days) without pressure ulcers
• The patient is at risk of pressure ulcers assessed a score ≤ 14 on the Norton scale
• The patient's weight is less than 120 Kg

Exclusion criteria

• The patient is in an exclusion period determined by a previous study
• The patient is under judicial protection, under tutorship or curatorship
• The patient refuses to sign the consent
• It is impossible to correctly inform the patient
• Contra-indication for strict decubitus dorsal position
• The patient has a rotation of the pelvis, asymmetric deformations of the hips in the frontal plane.
• The patient has bedsores, a recent scar in a pressure area.
• The patient has a knee flexion deformity> 10 °
• The patient is agitated or uncooperative
• The patient's weight is greater than 120 Kg