Non-invasive hemoglobin monitoring will be performed in patients who underwent cesarean section with placenta previa and this will be compared with actual laboratory findings. The investigators will investigate whether noninvasive hemoglobin monitoring can adequately reflect the massive bleeding that occurs within a short period of time and find out if it matches the actual laboratory findings.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
39
Attach the Masimo Rainbow SET® Radical-7 ™ pulse oximeter probe to the third or fourth finger and perform a Masimo SpHb ™ monitor.
Seoul National Univ. Bundang Hospital
Seongnam-si, Gyeonggi-do, South Korea
The change of total hemoglobin
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
The change of oxygen content
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
The change of methemoglobin
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
The change of carboxyhemoglobin
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
The change of pleth variability index
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
The change of perfusion index
Time frame: 10 min before operation, 10 min after operation, 1 min after skin incision, 1 min after delivery of baby, 1 min after removal of placenta, 1 min after skin closure
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