[Comparison of the efficacy of cleaning and disinfection of videoscopes: mechanized versus manual].
OBJECTIVE
a) To analyze the effectiveness of the automated cleaning and disinfection of endoscopies (Olympus miniETD, not previously tested) versus the manual method; b) To evaluate the drying and storage procedures used in our unit.


METHODS
Prospective 10-day study. The endoscopies were randomized for automated or manual cleaning and disinfection. Endoscopic samples were collected for microbiology studies at three points during the process: a) after endoscopy (after manual cleaning with water), b) after cleaning with enzymatic detergent and disinfection (automated or manual) and c) at the first hour in the morning.


RESULTS
Sixty-five samples were collected after endoscopy: 26 from gastroscopy, 26 from colonoscopy and 13 from duodenoscopy (positive cultures were found in 22, 25 and 10, respectively). The 35 samples collected after automated disinfection were negative, as were 29 of the 30 collected after manual disinfection (p = 0.46). Sixty-four of the 65 samples were negative for hepatitis B and hepatitis C. The only sample positive for hepatitis C became negative after manual disinfection. Positive culture was found in 15% of the samples collected before beginning the session.


CONCLUSIONS
a) Automated cleaning and disinfection (Olympus miniETD) are as effective as manual cleaning. b) Drying and storage procedures should be improved and/or disinfection should be carried out again before the first endoscopy of each session.
Ortiz
V
V
Unidad de Endoscopias, Servicio de Medicina Digestiva, Hospital La Fe, Valencia. vicortiz@comv.es
Sala
T
T
Argüello
L
L
Nicolás
D
D
Bau
I
I
Pertejo
V
V
Nos
P
P
D020685:Colonoscopes / Q000382:microbiology; D004203:Disinfection / Q000379:methods*; D020698:Duodenoscopes / Q000382:microbiology; D020776:Endoscopes, Gastrointestinal / Q000382:microbiology; D020699:Gastroscopes / Q000382:microbiology; D011446:Prospective Studies