Predicting If the Blood Pressure Will Drop After Spinal Anesthesia Using Ultrasound of the Neck

Catharina Hospital

Status: Completed

Conditions: Spinal Anesthesia-induced Hypotension

Treatments: Drug: Spinal anesthesia; Diagnostic Test: Carotid ultrasound measurement; Diagnostic Test: Vital sign measurement

Study type: Observational

Funder types: Other

Identifiers

NCT06711289

W22.234

Details and patient eligibility

About

After a spinal injection, blood pressure might drop for a short time, similar to what happens with general anesthesia. This drop can be different for each person. An anesthesiologist will use medicine to bring the blood pressure back to normal. If this drop could be predicted in advance, it would help the anesthesiologist treat it faster, making the procedure even safer and preventing side effects like dizziness or nausea.

Enrollment: 44 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adult patients of either sex who are scheduled for elective surgery under spinal anesthesia,
• Who fasted for 6 hours or more

Exclusion criteria

• Age <18 years old
• No informed consent for study participation
• Contra-indication for spinal anesthesia
• Emergency surgery
• Known poor left or right ventricular function / heart failure
• Moderate to severe valvular disease
• Atrial fibrillation
• Pacemaker rhythm
• Carotid artery stenosis > 50%
• History of cerebrovascular accident (CVA) or transient ischemic attack (TIA)
• History of cerebral trauma
• Pregnancy
• Neck complaints
• Morbid obesity (BMI > 40 kg/m2)

Trial design

44 participants in 2 patient groups

Hypotensive patients

Description:

Patients who developed hypotension after the induction of spinal anesthesia.

Treatment:

Diagnostic Test: Vital sign measurement

Diagnostic Test: Carotid ultrasound measurement

Drug: Spinal anesthesia

Normotensive patients

Description:

Patients who did not develop hypotension after the induction of spinal anesthesia.

Treatment:

Diagnostic Test: Vital sign measurement

Diagnostic Test: Carotid ultrasound measurement

Drug: Spinal anesthesia