Efficacy of Subclavian Vein/Artery Diameter Index in Predicting the Incidence of the Spinal-Induced Hypotension in Geriatric Patients

Tanta University

Status: Not yet enrolling

Conditions: Spinal Induced Hypotension; Old Age; Debility

Treatments: Diagnostic Test: Assessment of the IVC and aorta; Diagnostic Test: Assessment of the SCV & SCA

Study type: Observational

Funder types: Other

Identifiers

NCT07286422

SCV with hypotension

Details and patient eligibility

About

The hypothesis of the study will be that the subclavian vein/subclavian artery diameter (SCVD/SCAD) index will be a good predictor of spinal-induced hypotension in geriatric patients.

Full description

Ultrasonography (USG)-guided measurement of inferior vena cava (IVC) diameters and IVC collapsibility index (IVCCI) are reliable indicators of intravascular volume status and of clinical response to volume resuscitation.

The cava/aorta index had previously shown good ability in assessing volume status and predicting post-spinal hypotension.

The subclavian vein (SCV) is advantageous for measurement as it's supported by the clavicle, preventing deformation or compression. It is also not affected by pregnancy, obesity, or abdominal pain, and its anatomical position remains fixed.

The hypothesis of the study will be that the subclavian vein/subclavian artery diameter (SCVD/SCAD) index will be a good predictor of spinal-induced hypotension in geriatric patients.

Enrollment: 107 estimated patients

Sex: All

Ages: 65+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• 1. Patients aged 65 or older. 2. Lower body surgeries to be done with spinal anesthesia. 3. BMI less than 30 kg/m2. 4. Patients with ASA I-III.

Exclusion criteria

- 1. Patient refusal. 2. Patients with a history of peripheral arterial disease or atherosclerosis 3. Patients with a body mass index of greater than 30 kg/m2 4. Major bloody surgeries (class C surgeries) 5. Patients with a history of cardiovascular disorders, including arrhythmias, heart failure, tricuspid or mitral regurgitation, dilated right atrium or ventricle, AF, ejection fraction < 45%, uncontrolled hypertension, systolic blood pressure <90 mmHg, dyspnea, agitation.

6. Patients with increased intra-abdominal pressure, intra-abdominal mass compressing the IVC.