Electrical impedance tomography (EIT) is a non-invasive, radiation-free functional imaging technique, which offers the possibility of continuous bedside measurement of regional lung ventilation. The principle of EIT is based on the input of alternating current and voltage measurement via surface electrodes placed around the thorax, which measure changes of electrical impedance parallel to changes in aeration within the lungs. This enables the measurement of regional ventilation. Because of the rapid time resolution of this technique, it can be used for the measurement of fast physiological effects. For more than 20 years EIT has been intensively used for research purposes, but has not yet been used for the monitoring of regional lung function in the routine clinical setting. This review describes the status of EIT in the clinical routine, its possibilities and limitations.
机构:
Univ Amsterdam, Acad Med Ctr, Dept Intens Care Med, LEICA, NL-1105 AZ Amsterdam, Netherlands
HERMES Crit Care Grp, Amsterdam, NetherlandsUniv Amsterdam, Acad Med Ctr, Dept Intens Care Med, LEICA, NL-1105 AZ Amsterdam, Netherlands
机构:
Rostock Univ, Med Ctr, Dept Anesthesiol & Intens Care Med, Rostock, GermanySimulat Ctr Mech Ventilat, Karlsruhe, Germany
Boehm, Stephan H.
Tusman, Gerardo
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机构:
Hosp Privado Comunidad Mar Del Plata, Dept Anesthesiol, RA-7600 Mar Del Plata, Buenos Aires, ArgentinaSimulat Ctr Mech Ventilat, Karlsruhe, Germany