Cardiac Output Clinical Trial
Official title:
Hemodynamics Effects of Left Lateral Tilt on the Full Term Pregnant Females
The aim of the study is to investigate the effect of different angles of lateral tilt on the maternal hemodynamics before and after spinal anesthesia
At operating room, patients will be monitored using non invasive blood, ECG, pulse oximeter
and electrical cardiometry. Baseline readings will be taken in supine position then repeated
after putting the patient in left lateral position with angle 15 then 30 degrees.
Then two IV lines will be inserted and 500cc crystalloid will be administered. Subarachnoid
block will be performed in sitting position under complete aseptic conditions using 25 g
spinal needle. Subarachnoid block will be achieved by injecting 10 mg hyperbaric bupivacaine
plus 25 ug fentanyl. The block will be considered successful if adequate block reached T4
dermatome.
After successful block the hemodynamic variables will be recorded in the same positions as
before (0,15, 30 degrees left uterine tilt).
A minimum number of 61 patients was calculated to have a study power of 80% and alpha error
of 0.05.
SPSS Chicago 18 software will be used for data analysis. Categorical data will be presented
as frequencies, continuous variables will presented as mean ± standard deviation and will be
analyzed using on way analysis of variance (ANOVA) with post-hoc pairwise comparisons using
bonferroni test. A P value of 0.05 will be considered statistically significant.
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Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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