Monitoring of somatosensory evoked responses during carotid endarterectomy

Omkar Markand, R. S. Dilley, S. S. Moorthy, C. Warren

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

During carotid endarterectomy (CEA), we monitored somatosensory evoked responses (SERs) ipsilaterally over the scalp following stimulation of the contralateral median nerve at the wrist. Thirty-eight CEAs in 36 patients were studied. Of the 10 CEAs performed with patients under general anesthesia, three involved marked changes in SERs, reversed by shunt insertion. The remaining 28 CEAs were done with patients under local anesthesia. The SERs remained stable during an average clamp time of 30 minutes in all except one patient, in whom SER changes developed within a minute of clamping; the changes were reversed by shunt replacement. Four of the 38 CEAs required a shunt based on SER changes, although measurement of stump pressure (<50 mm Hg) would have indicated the necessity of a shunt in eight additional operations. We concluded that SERs are useful in signaling cerebral ischemia and the need for a shunt during CEA.

Original languageEnglish
Pages (from-to)375-378
Number of pages4
JournalArchives of Neurology
Volume41
Issue number4
StatePublished - 1984

Fingerprint

Carotid Endarterectomy
Median Nerve
Local Anesthesia
Scalp
Brain Ischemia
Wrist
Constriction
General Anesthesia
Pressure
Monitoring

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Markand, O., Dilley, R. S., Moorthy, S. S., & Warren, C. (1984). Monitoring of somatosensory evoked responses during carotid endarterectomy. Archives of Neurology, 41(4), 375-378.

Monitoring of somatosensory evoked responses during carotid endarterectomy. / Markand, Omkar; Dilley, R. S.; Moorthy, S. S.; Warren, C.

In: Archives of Neurology, Vol. 41, No. 4, 1984, p. 375-378.

Research output: Contribution to journalArticle

Markand, O, Dilley, RS, Moorthy, SS & Warren, C 1984, 'Monitoring of somatosensory evoked responses during carotid endarterectomy', Archives of Neurology, vol. 41, no. 4, pp. 375-378.
Markand, Omkar ; Dilley, R. S. ; Moorthy, S. S. ; Warren, C. / Monitoring of somatosensory evoked responses during carotid endarterectomy. In: Archives of Neurology. 1984 ; Vol. 41, No. 4. pp. 375-378.
@article{daa87a9b907648c7adb740b95d923492,
title = "Monitoring of somatosensory evoked responses during carotid endarterectomy",
abstract = "During carotid endarterectomy (CEA), we monitored somatosensory evoked responses (SERs) ipsilaterally over the scalp following stimulation of the contralateral median nerve at the wrist. Thirty-eight CEAs in 36 patients were studied. Of the 10 CEAs performed with patients under general anesthesia, three involved marked changes in SERs, reversed by shunt insertion. The remaining 28 CEAs were done with patients under local anesthesia. The SERs remained stable during an average clamp time of 30 minutes in all except one patient, in whom SER changes developed within a minute of clamping; the changes were reversed by shunt replacement. Four of the 38 CEAs required a shunt based on SER changes, although measurement of stump pressure (<50 mm Hg) would have indicated the necessity of a shunt in eight additional operations. We concluded that SERs are useful in signaling cerebral ischemia and the need for a shunt during CEA.",
author = "Omkar Markand and Dilley, {R. S.} and Moorthy, {S. S.} and C. Warren",
year = "1984",
language = "English",
volume = "41",
pages = "375--378",
journal = "Archives of Neurology",
issn = "0003-9942",
publisher = "American Medical Association",
number = "4",

}

TY - JOUR

T1 - Monitoring of somatosensory evoked responses during carotid endarterectomy

AU - Markand, Omkar

AU - Dilley, R. S.

AU - Moorthy, S. S.

AU - Warren, C.

PY - 1984

Y1 - 1984

N2 - During carotid endarterectomy (CEA), we monitored somatosensory evoked responses (SERs) ipsilaterally over the scalp following stimulation of the contralateral median nerve at the wrist. Thirty-eight CEAs in 36 patients were studied. Of the 10 CEAs performed with patients under general anesthesia, three involved marked changes in SERs, reversed by shunt insertion. The remaining 28 CEAs were done with patients under local anesthesia. The SERs remained stable during an average clamp time of 30 minutes in all except one patient, in whom SER changes developed within a minute of clamping; the changes were reversed by shunt replacement. Four of the 38 CEAs required a shunt based on SER changes, although measurement of stump pressure (<50 mm Hg) would have indicated the necessity of a shunt in eight additional operations. We concluded that SERs are useful in signaling cerebral ischemia and the need for a shunt during CEA.

AB - During carotid endarterectomy (CEA), we monitored somatosensory evoked responses (SERs) ipsilaterally over the scalp following stimulation of the contralateral median nerve at the wrist. Thirty-eight CEAs in 36 patients were studied. Of the 10 CEAs performed with patients under general anesthesia, three involved marked changes in SERs, reversed by shunt insertion. The remaining 28 CEAs were done with patients under local anesthesia. The SERs remained stable during an average clamp time of 30 minutes in all except one patient, in whom SER changes developed within a minute of clamping; the changes were reversed by shunt replacement. Four of the 38 CEAs required a shunt based on SER changes, although measurement of stump pressure (<50 mm Hg) would have indicated the necessity of a shunt in eight additional operations. We concluded that SERs are useful in signaling cerebral ischemia and the need for a shunt during CEA.

UR - http://www.scopus.com/inward/record.url?scp=0021325403&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021325403&partnerID=8YFLogxK

M3 - Article

C2 - 6703938

AN - SCOPUS:0021325403

VL - 41

SP - 375

EP - 378

JO - Archives of Neurology

JF - Archives of Neurology

SN - 0003-9942

IS - 4

ER -