PMID- 7841984
OWN - NLM
STAT- MEDLINE
DCOM- 19950303
LR  - 20161123
IS  - 1122-0643 (Print)
IS  - 1122-0643 (Linking)
VI  - 49
IP  - 5
DP  - 1994 Dec
TI  - Clinical usefulness of a new portable oxygen concentrator.
PG  - 444-6
AB  - Thirty chronic, hypoxaemic patients with a mean arterial oxygen tension (PaO2) of 
      6.81 kPa (SD 0.56) in air were tested using the Travelair. The study was 
      performed at rest, allowing the patients to breathe in the following conditions: 
      a) compressed air; b) continuous oxygen flow from the concentrator; c) oxygen 
      from the concentrator in demand-valve mode (DV) with an activation time (AT) of 
      375 ms; d) DV with AT of 750 ms; e) DV with AT of 1,125 ms; f) DV with AT 1,500 
      ms; and g) continuous oxygen from the hospital outlet at 2 l.min-1. The mean (SD) 
      SaO2% values at each consecutive step were: a) 87.2 (5.0)%; b) 93.0 (3.0)%; c) 
      93.9 (2.8)%; d) 94.2 (2.5)%; e) 94.0 (2.7)%; f) 94.1 (2.7)%; and g) 94.8 (2.4)%, 
      respectively. Each of the results obtained with DV (b-f) was statistically 
      different from those obtained breathing air (a) or oxygen (g). The mean (SD) 
      respiratory rates at each consecutive step were: a) 21.2 (4.1); b) 21.0 (4.0); c) 
      21.3 (4.0); d) 21.0 (3.6); e) 20.7 (3.4); f) 21.0 (3.8); and g) 21.2 (3.8) 
      breaths.min-1, respectively. No relationship was found between the mean oxygen 
      saturations and the mean respiratory frequencies of the patients in each 
      condition tested. With the concentrator on demand, the average of the best SaO2% 
      obtained by the patients in whatever of the four DV activation time modes 
      (conditions c-f) was 94.8 (2.4)%, and no statistical difference was detected 
      between this result and the SaO2% obtained with 2 l.min-1 of continuous oxygen.
FAU - Pesce, L I
AU  - Pesce LI
AD  - Div. Pneumologica, Ospedale di Cittadella, Padova, Italy.
FAU - Bassi, G N
AU  - Bassi GN
FAU - Santovito, A
AU  - Santovito A
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PL  - Italy
TA  - Monaldi Arch Chest Dis
JT  - Monaldi archives for chest disease = Archivio Monaldi per le malattie del torace
JID - 9307314
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - Female
MH  - Humans
MH  - Hypoxia/therapy
MH  - Male
MH  - Middle Aged
MH  - Oxygen Inhalation Therapy/*instrumentation
EDAT- 1994/12/01 00:00
MHDA- 1994/12/01 00:01
CRDT- 1994/12/01 00:00
PHST- 1994/12/01 00:00 [pubmed]
PHST- 1994/12/01 00:01 [medline]
PHST- 1994/12/01 00:00 [entrez]
PST - ppublish
SO  - Monaldi Arch Chest Dis. 1994 Dec;49(5):444-6.