Predictive Value of Ultrasound-Measured Spinal Structural Indices for Difficult Neuraxial Puncture in Elderly Patients

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2600115976

Enrollment

Unknown

Registered

2026-01-04

Start date

2026-01-04

Completion date

Unknown

Last updated

2026-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None

Interventions

Patients are divided into a difficult neuraxial puncture group and a non-difficult neuraxial puncture group according to whether whether the patient is difficult to puncture or not:None

Eligibility

Sex/Gender

All

Age

65 Years to 110 Years

Inclusion criteria

Inclusion criteria: 1. Age >= 65 years; 2. American Society of Anesthesiologists (ASA) physical status I–III; 3. Scheduled to undergo spinal anesthesia or combined spinal–epidural anesthesia; 4. Provision of written informed consent.

Exclusion criteria

Exclusion criteria: 1. Severe spinal deformity or a history of spinal surgery; 2. Infection at the puncture site or coagulation disorders; 3. Inability to cooperate with proper positioning; 4. Extremely poor ultrasound image quality that precludes identification of the posterior complex.

Design outcomes

Primary

Measure	Time frame
sensitivity;specificity;AUC;Difficult neuraxial anesthesia puncture;	—

Secondary

Measure	Time frame
Posterior Complex Length, PCL;Posterior Complex Depth, PCD;PCL/PCD;	—

Countries

China

Contacts

Public ContactZhang Wenjuan

Liangxiang Hospital, Fangshan , Beijing

15010771239@139.com+86 150 1077 1239

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Apr 17, 2026