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Titolo:
Establishing predictive indicators for the status of loaded soft tissues
Autore:
Knight, SL; Taylor, RP; Polliack, AA; Bader, DL;
Indirizzi:
Univ London, IRC Biomed Mat, London E1 4NS, England Univ London London England E1 4NS IRC Biomed Mat, London E1 4NS, England Univ London, Dept Engn, London E1 4NS, England Univ London London England E1 4NS don, Dept Engn, London E1 4NS, England John Radcliffe Hosp, Dept Clin Biochem, Oxford OX3 9DU, England John Radcliffe Hosp Oxford England OX3 9DU chem, Oxford OX3 9DU, England
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 6, volume: 90, anno: 2001,
pagine: 2231 - 2237
SICI:
8750-7587(200106)90:6<2231:EPIFTS>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
DECUBITUS ULCER FORMATION; PRESSURE ISCHEMIA; REACTIVE HYPEREMIA; SWEAT;
Keywords:
transcutaneous gas tensions; sweat lactate; sweat urea; soft tissue status; applied pressures; ischemia; pressure sores;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Bader, DL Univ London, IRC Biomed Mat, Mile End Rd, London E1 4NS, EnglandUniv London Mile End Rd London England E1 4NS n E1 4NS, England
Citazione:
S.L. Knight et al., "Establishing predictive indicators for the status of loaded soft tissues", J APP PHYSL, 90(6), 2001, pp. 2231-2237

Abstract

Two complementary techniques were employed to assess the soft tissue response to applied pressure. The noninvasive methods involve the simultaneous measurement of the local tensions of oxygen and carbon dioxide (tcPO(2) and tcPCO(2)) and the collection and subsequent analysis of sweat collected from the sacrum, a common site for the development of pressure sores. All tests were performed on able-bodied subjects. Results have indicated that oxygen levels (tcPO(2)) were lowered in soft tissues subjected to applied pressures of between 40 (5.3 kPa) and 120 mmHg (16.0 kPa). At the higher pressures, this decrease was generally associated with an increase in carbon dioxide levels (tcPCO(2)) well above the normal basal levels of 45 mmHg (6 kPa). There were also considerable increases, in some cases up to twofold, in theconcentrations of both sweat lactate and urea at the loaded site compared with the unloaded control. By comparing selected parameters, a threshold value for loaded tcPO(2) was identified, representing a reduction of similar to 60% from unloaded values. Above this threshold, there was a significant relationship between this parameter and the loaded/unloaded concentration ratios for both sweat metabolites. These parameters may prove useful in identifying those subjects whose soft tissue may be compromised during periods of pressure ischemia.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 20:14:24