Finite-difference modeling of the anisotropic electric fields generated by stimulating needles used for catheter placement.
IEEE Trans Biomed Eng
; 54(7): 1186-90, 2007 Jul.
Article
em En
| MEDLINE
| ID: mdl-17605349
ABSTRACT
The use of peripheral nerve blocks to control pain is an increasing practice. Many techniques include the use of stimulating needles to locate the nerve of interest. Though success rates are generally high, difficulties still exist. In certain deeper nerve blocks, two needles of different geometries are used in the procedure. A smaller needle first locates a nerve bundle, and then is withdrawn in favor of a second, larger needle used for injection. The distinct geometries of these needles are shown to generate different electric field distributions, and these differences may be responsible for failures of the second needle to elicit nerve stimulation when placed in the same location as the first. A 3-D finite-difference method has been employed to numerically calculate the electric field distributions for a commercial set of stimulating needles.
Buscar no Google
Bases de dados:
MEDLINE
Assunto principal:
Nervos Periféricos
/
Cateterismo
/
Estimulação Elétrica
/
Modelos Neurológicos
/
Agulhas
/
Bloqueio Nervoso
Limite:
Humans
Idioma:
En
Revista:
IEEE Trans Biomed Eng
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Estados Unidos