title: Negative pressure therapy with irrigation for digits and hands: pressure measurement and clinical application.
abstract: We recently developed continuous negative pressure therapy with irrigation (NPI) and successfully applied it to an infected digit with a narrow wound. With this technique, however, the dressing circumferentially wraps the digit or hand, and the pressure that the digit or hand receives and the influence on peripheral circulation are unclear. In this report, we evaluated the external pressure that a digit and hand received during NPI in vitro. Under circumferential NPI dressing, the skin perfusion pressure (SPP) of the peripheral portion was measured. Pressure was maintained at 1.3 mm Hg, and suction pressure ranged from -50 to -200 mm Hg. The pressure that a digit or hand receives during NPI is much lower than that at which tissue may be damaged (40-50 mm Hg). The SPP of the peripheral portion was much higher than 40 mm Hg, which is the pressure at which wound healing may be predicted. In clinical cases, NPI has been useful for wound bed preparation.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Matsushita
authors.forename: Masao
authors.initials: M
authors.lastname: Fujiwara
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nagata
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Noda
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Fukamizu
mesh_terms: D000328:Adult; D000673:Amputation, Traumatic / Q000601:surgery*; D004867:Equipment Design; D005383:Finger Injuries / Q000628:therapy*; D006230:Hand Injuries / Q000628:therapy; D006801:Humans; D008297:Male; D054843:Negative-Pressure Wound Therapy / Q000295:instrumentation / Q000379:methods*; D012867:Skin / Q000098:blood supply; D007507:Therapeutic Irrigation; D014945:Wound Healing / Q000502:physiology; D055815:Young Adult