Per-operative cerebral near-infrared spectroscopy (NIRS) predicts maternal hypotension during elective caesarean delivery in spinal anaesthesia.
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Per-operative cerebral near-infrared spectroscopy (NIRS) predicts maternal hypotension during elective caesarean delivery in spinal anaesthesia. / Berlac, P A; Rasmussen, Yvonne Hovmann.
In: International Journal of Obstetric Anesthesia, Vol. 14, No. 1, 2005, p. 26-31.Research output: Contribution to journal › Journal article › Research
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T1 - Per-operative cerebral near-infrared spectroscopy (NIRS) predicts maternal hypotension during elective caesarean delivery in spinal anaesthesia.
AU - Berlac, P A
AU - Rasmussen, Yvonne Hovmann
PY - 2005
Y1 - 2005
N2 - BACKGROUND: Spinal anaesthesia-induced maternal hypotension is common during elective caesarean section. This study evaluated whether cerebral near-infrared spectroscopy predicts maternal hypotension, defined as a 25% reduction in systolic blood pressure or heart rate or presentation of clinical symptoms. METHOD: Thirty-eight ASA I-II parturients scheduled for elective caesarean section with spinal anaesthesia were monitored by near-infrared spectroscopy for changes in cerebral oxygenation (ScO(2)) with the recordings blinded to the anaesthesiologist. RESULTS: There was a 5% decrease in ScO(2) (median 8%, interquartile range 5-11%) in all 22 patients who developed hypotension, whereas only 2 of 13 women who did not develop hypotension had a 5% decrease in ScO(2). Median time from a 5% decrease in ScO(2) to hypotension was 81 (interquartile range 30-281) s. The sensitivity of near-infrared spectroscopy to predict hypotension was 1.00, with a specificity 0.85 and a predictability of 0.91. CONCLUSION: The results demonstrate a relationship between ScO(2) and impending hypotension during low-dose spinal anaesthesia for elective caesarean section. We suggest that immediate measures are taken to stabilise blood pressure if the near-infrared spectroscopy determined cerebral oxygenation decreases by more than 5%.
AB - BACKGROUND: Spinal anaesthesia-induced maternal hypotension is common during elective caesarean section. This study evaluated whether cerebral near-infrared spectroscopy predicts maternal hypotension, defined as a 25% reduction in systolic blood pressure or heart rate or presentation of clinical symptoms. METHOD: Thirty-eight ASA I-II parturients scheduled for elective caesarean section with spinal anaesthesia were monitored by near-infrared spectroscopy for changes in cerebral oxygenation (ScO(2)) with the recordings blinded to the anaesthesiologist. RESULTS: There was a 5% decrease in ScO(2) (median 8%, interquartile range 5-11%) in all 22 patients who developed hypotension, whereas only 2 of 13 women who did not develop hypotension had a 5% decrease in ScO(2). Median time from a 5% decrease in ScO(2) to hypotension was 81 (interquartile range 30-281) s. The sensitivity of near-infrared spectroscopy to predict hypotension was 1.00, with a specificity 0.85 and a predictability of 0.91. CONCLUSION: The results demonstrate a relationship between ScO(2) and impending hypotension during low-dose spinal anaesthesia for elective caesarean section. We suggest that immediate measures are taken to stabilise blood pressure if the near-infrared spectroscopy determined cerebral oxygenation decreases by more than 5%.
M3 - Journal article
VL - 14
SP - 26
EP - 31
JO - International Journal of Obstetric Anesthesia
JF - International Journal of Obstetric Anesthesia
SN - 0959-289X
IS - 1
ER -
ID: 34051308