Accurate measurement of intraarterial pressure through radial artery catheters in neonates.
A technique is described for accurate measurement of intraarterial pressure through radial artery catheters in neonates. The technique, which can be used for short-term monitoring, uses cannulation of the radial artery with a 24-gauge Teflon catheter, connected by a Luer-Lok fitting to a three-way stopcock and a high-fidelity tip transducer. In vitro studies showed that the system is linear and the frequency response is flat (+/- 3 dB) up to 50 Hz. The technique permits gathering of high-quality pressure data and can be used in the area of neonatal clinical research for short-term monitoring. It needs to be developed further before routine application in clinical practice can be recommended.
Hack
W W
WW
Department of Pediatrics, University Hospital, Free University, Amsterdam, The Netherlands.
Westerhof
N
N
Leenhoven
T
T
Okken
A
A
D001158:Arteries / Q000502:physiology; D015924:Blood Pressure Monitors; D002406:Catheterization, Peripheral; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods*; D013933:Thumb / Q000098:blood supply*; D013997:Time Factors; D014160:Transducers, Pressure