LareauSC, RyanKJ, DienerCF. The relationship between frequency of ventilator circuit changes and infec- tious hazard. Am Rev Respir Dis1978;118(3):493–496.
2.
CrossAS, RoupB.Role of respiratory assistance devices in endemic nosocomial pneumonia. Am J Med1981;70(3):681–685.
3.
CravenDE, ConnollyMGJr, LichtenbergDA, PrimeauPJ, McCabeWR. Contamination of mechanical ventila- tors with tubing changes every 24 or 48 hours. N Engl J Med1982;306(25):1505–1509.
4.
BoyceJM, WhiteRL, SpruillEY, WallM.Cost-effective application of the Centers for Disease Control guideline for prevention of nosocomial pneumonia. Am J Infect Control1985;13(5):228–232.
5.
LambVA, MayhallCG, DaltonHP, . Pneumonia in patients on ventilatory support: relationship to microbial flora of ventilator circuits (abstract). 25th International Conference on Antimicrobial Agents and Chemother-apy, Minneapolis MN, October1985. Abstract # 446.
6.
MahlmeisterMJ, YorkMK, FinkJB. Levels of contami- nation of ventilator circuits: a comparison at 48 hours and 120 hours (abstract). Respir Care1987;32(10):942.
7.
GrenonJ, ArmstrongL.Five-day changes for heated- wire circuits (abstract). Respir Care1991;36(11):1287.
8.
DreyfussD, DjedainiK, WeberP, BrunP, LanoreJJ, RahmaniJ, . Prospective study of nosocomial pneu- monia and of patient and circuit colonization during me- chanical ventilation with circuit changes every 48 hours versus no change. Am Rev Respir Dis1991;143(4, Part 1):738–743.
9.
KacmarekRM, EnglishP, VallendeN, HopkinsCC. Extended use of heated neonatal/pediatric ventilator cir- cuits (HNVC) (abstract). Respir Care1991;36(11):1287.
10.
FinkJ, MahlmeisterM, YorkM, CohenN.A compari- son of organism growth in ventilator circuits at 48 hours versus 7 days (abstract). Am J Infect Control1992;220:103A.
11.
BoherM, LohseS, GlasbyC, . Impact of 7-day cir- cuit changes on nosocomial lower respiratory tract infec- tions (abstract). Am J Infect Control1992;220:103A.
12.
RhameFS, StreifelA, McCombC, BoyleM.Bubbling humidifiers produce microaerosols which can carry bac- teria. Infect Control1986;7(8):403–407.
13.
GoularteTA, ManningM, CravenDE. Bacterial colo- nization in humidifying cascade reservoirs after 24 and 48 hours of continuous mechanical ventilation. Infect Control1987;8(5):200–203.
14.
GallagherJ, StrangewaysJEM, Allt-GrahamJ.Contamination control in long-term ventilation: a clini- cal study using a heat- and moisture-exchanging filter. Anaesthesia1987;42(5):476–481.
BransonRD, DavisKJr, CampbellRS, JohnsonDJ, PorembkaDT. Humidification in the intensive care unit: prospective study of a new protocol utilizing heated hu- midification and a hygroscopic condenser humidifier. Chest1993;104(6):1800–1805.
17.
MartinC, PerrinG, GevaudanMJ, SauxP, GouinF.Heat and moisture exchangers and vaporizing humidi- fiers in the intensive care unit. Chest1990;97(1):144–149.
18.
MissetB, EscudierB, RivaraD, LeclercqB, NitenbergG.Heat and moisture exchanger vs heated humidifier during long-term mechanical ventilation: a prospective randomized study. Chest1991;100(1):160–163.
19.
RoustanJP, KienlenJ, AubasP, AubasS, du CailarJ.Comparison of hydrophobic heat and moisture exchang- ers with heated humidifiers during prolonged mechanical ventilation. Intensive Care Med1992;18(2):97–100.
20.
SottiauxT, MignoletG, DamasP, LamyM.Comparative evaluation of the three heat and moisture exchangers during short-term postoperative mechanical ventilation. Chest1993;104(1):220–224.
21.
ChristopherKL, SaravolatzLD, BushTL, ConwayWA. The potential role of respiratory therapy equipment in cross-infection: a study using a canine model for pneu- monia. Am Rev Respir Dis1983;128(2):271–275.
22.
CravenDE, GoularteTA, MakeBJ. Contaminated con- densate in mechanical ventilator circuits: a risk factor for nosocomial pneumonia?Am Rev Respir Dis1984;129(4):625–628.
23.
CravenDE, KunchesLM, KilinskyV, LichtenbergDA, MakeBJ, McCabeWR. Risk factors for pneumonia and fatality in patients receiving continuous mechanical ven- tilation. Am Rev Respir Dis1986;133(5):792–796.
24.
Malecka-GriggsB.Microbiological assessment of 24- and 48-h changes and management of semiclosed cir- cuits from ventilators in a neonatal intensive care unit. J Clin Microbiol1986;23(2):322–328.
25.
Centers for Disease Control. Update: Universal Precautions for prevention of transmission of human im- munodeficiency virus, hepatitis B virus, and other blood- borne pathogens in health-care settings. MMWR1988;37:377–382,387–388.
26.
DachnerF, KappsteinI, SchusterF, ScholzR, BauerE, JoossensD, JustH.Influence of disposable ('Conchapak') and reusable humidifying systems on the incidence of ventilation pneumonia. J Hosp Infect1988;11(2):161–168.
27.
Malecka-GriggsB, KennedyC, RossB.Microbial bur- dens in disposable and nondisposable ventilator circuits used for 24 and 48 h in intensive care units. J Clin Microbiol1989;27(3):495–503.
28.
CravenDE, StegerKA. Pathogenesis and prevention of nosocomial pneumonia in the mechanically ventilated patient. Respir Care1989;34(2):85–97.
29.
SimmonsBP, WongES. Guideline for prevention of nosocomial pneumonia. Respir Care1983;28(2):221–232.
30.
ChatburnRL. Decontamination of respiratory care equipment: what can be done, what should be done. Respir Care1989;34(2):98–110.
31.
CooperJB, CouvillownLA. Accidental breathing systems disconnections. U.S. Department of Health & Human Services, Public Health Service, Food & Drug Administration, Center for Devices and Radiological Health. HHS Publication No. FDA 86-4205, January1986.
32.
ComhaireA, LamyM.Contamination rate of sterilized ventilators in an ICU. Crit Care Med1981;9(7):546–548.
33.
PloysongsangY, BransonR, RashkinMC, HurstJM. Pressure flow characteristics of commonly used heat- moisture exchangers. Am Rev Respir Dis1988;138(3):675–678.
34.
PloysongsangY, BransonRD, RashkinMC, HurstJM. Effect of flowrate and duration of use on the pressure drop across six artificial noses. Respir Care1989;34(10):902–907.
35.
PingFC, OultonJL, SmithJA, SkidmoreAG, JenkinsLC. Bacteria filters are they necessary on anaesthetic machines?Can Anaesth Soc J1979;26(5):415–419.
36.
American Association for Respiratory Care. Clinical practice guideline: patient-ventilator system check. Respir Care1992;37(8):882–886.
37.
VesleyD, AndersonJ, HalbertMM, WymanL.Bacterial output from three respiratory therapy humidifying de- vices. Respir Care1979;24(3):228–234.
38.
American Association for Respiratory Care. Clinical practice guideline: humidification during mechanical ventilation. Respir Care1992;37(8):887–890.
39.
TorresA, AznarR, GatellIM, JimenezP, GonzalezI, FerrerA, . Incidence, risk, and prognosis factors of nosocomial pneumonia in mechanically ventilated patients. Dis Am Rev Respir1990; [42(3):523–528.
40.
RelloT, QuintanaE, AusinaV, CastellaJ, LuquinM, NetA, PratsG.Incidence, etiology, and outcome of nosocomial pneumonia in mechanically ventilated patients. Chest1991; 100:439–444.
41.
NiedermanMS, MantovaniR, SchochP, PapasJ, FeinAM. Patterns and routes of tracheobronchial colonization in mechanically ventilated patients: the role of nutritional status in colonization of the lower airway by Pseudomonas species. Chest1989;95:155–161.
42.
U.S. Department of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Devices and Radiological Health.Accidental breathing circuit disconnections in the critical care setting. HHS Publication No. FDA 90–4233.