Anesthesia, Spinal [E03.155.086.331], Operating Tables [E07.325.662]
Conditions
Brief summary
The purpose of this study is to analyze the accuracy of needle insertion and the discomfort during different ergonomic conditions faced by anesthesiologists during spinal anesthesia. In particular,the investigators intend to compare the angles between the patients' back and the inserted spinal needle in the coronal plane at different operating table heights.
Detailed description
Sixty patients will be recruited undergoing elective surgery under spinal anesthesia. The patients will be randomly allocated to one of four groups: Group U, L, X, and N. These acronyms indicate the heights of the operating table which set at the needle insertion point of anesthetists, namely the level of umbilicus, lowest rib margin, xiphoid process, and nipple in a standing posture. The angle between the patient's skin and the spinal needle will be measured by the protractor in the coronal and sagittal plane. The anesthesiologists will be asked to record the subjective general discomfort graded by Numeric Rating Scale. And the degree of neck, lower back, knee, and elbow flexion of the anesthesiologists will be measured by taking pictures during procedure.
Interventions
PROCEDUREUmbilicus
Depending on the height of the operating table, the insertion angle of the spinal needles would be vary. The investigators intend to find the optimal angle and the height of the table to provide that. The height of the operating table which set at the needle insertion point of anesthetists; the level of umbilicus
PROCEDURELowest rib margin
The height of the operating table which set at the needle insertion point of anesthetists; the level of lowest rib margin
PROCEDUREXiphoid
The height of the operating table which set at the needle insertion point of anesthetists; the level of xiphoid
PROCEDURENipple
The height of the operating table which set at the needle insertion point of anesthetists; the level of nipple
DRUGUmbilicus Bupivacaine
If freely flowing of CSF is detected, appropriate dose of MARCAINE was injected in all interventional groups.
DRUGLowest rib margin Bupivacaine
If freely flowing of CSF is detected, appropriate dose of MARCAINE was injected in all interventional groups.
DRUGXiphoid Bupivacaine
If freely flowing of CSF is detected, appropriate dose of MARCAINE was injected in all interventional groups.
DRUGNipple Bupivacaine
If freely flowing of CSF is detected, appropriate dose of MARCAINE was injected in all interventional groups.
Sponsors
Seoul National University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
SINGLE (Caregiver)
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* undergoing elective surgery under spinal anesthesia
Exclusion criteria
* body mass index (BMI)\>30 * history of spine operation or severe anatomical abnormalities of spine
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The angle between the patient's skin and the spinal needle | during procedure |
Secondary
| Measure | Time frame |
|---|---|
| anesthesiologist's subjective discomfort | during procedure |
| the degree of anesthesiologist's joint flexion | during procedure |
Countries
South Korea
Contacts
Primary ContactJinhee Kim, MD,PhD
Backup ContactHyerim Kim, MD
Outcome results
None listed