A novel device for patient-controlled sedation: laboratory and clinical evaluation of the Baxter Intermate LV250 infusor and patient-control module.
The Baxter Intermate LV250 infusor is a large capacity, high flow mechanical infusor, designed to deliver viscous solutions and suspensions. The objective of the laboratory study was to evaluate the LV250 infusor when used with either 0.9% sodium chloride solution or an emulsion, propofol 1%. Following this, the LV250 infusor with the patient-control module was assessed in the clinical setting as to its suitability for use in patient-controlled sedation with a propofol and lignocaine mixture. Between reservoir volumes of 250 and 55 ml, the LV250 infusor was found to infuse a propofol 1% and lignocaine mixture at a lower flow compared with the sodium chloride solution, 170 ml.h-1 and 260 ml.h-1 respectively. The lower flow with the propofol mixture may be a result of its higher viscosity. All patients using the LV250 infusor for patient-controlled sedation found it easy to use and stated that they were able to achieve their desired level of sedation. All patients maintained arterial oxygen saturations above 95%. The LV250 infusor performed reliably and with little inter-device variation, and with the patient-control module could be used as an alternative to electronic devices for providing patient-controlled sedation. Compared with electronic infusors, its advantages include compactness and simplicity of design.
Hamid
S K
SK
University Department of Anaesthesia, Western Infirmary, Glasgow.
Wong
P K
PK
Carmichael
F
F
White
K
K
Asbury
A J
AJ
D018686:Anesthetics, Intravenous / Q000008:administration & dosage*; D000779:Anesthetics, Local / Q000008:administration & dosage; D016292:Procedural Sedation / Q000295:instrumentation*; D003814:Dentistry, Operative; D004334:Drug Administration Schedule; D005069:Evaluation Studies as Topic; D006801:Humans; D007260:Infusion Pumps; D008012:Lidocaine / Q000008:administration & dosage; D015742:Propofol / Q000008:administration & dosage*; D012646:Self Administration
D018686:Anesthetics, Intravenous; D000779:Anesthetics, Local; D008012:Lidocaine; D015742:Propofol