The change characteristics of the High Frequency Variability Index (HFVI) during ultrasound-guided peripheral nerve block in lower limb surgery

The change characteristics of the High Frequency Variability Index (HFVI) during ultrasound-guided peripheral nerve block in lower limb surgery - The change characteristics of the High Frequency Variability Index (HFVI) during ultrasound-guided peripheral nerve block in lower limb surgery

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000054154

Enrollment

Registered

2024-04-16

Start date

2023-12-19

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

patients recieving the lower limb surgery

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: patients undergoing the orthopaedic lower limb surgery

Exclusion criteria

Exclusion criteria: the patients with serious cardiovascular dosease, who are American Society of Anestheologists physical status class 3 or more, who are administered an anticholinergic agent,with arrhythmia or implanted pacemaker and inappropriate recordind of HFVI.

Design outcomes

Primary

Measure	Time frame
the changes of HFVI after PNB	—

Secondary

Measure	Time frame
Comparison of opioid administration between the group where opioid administration was guided by HFVI values and the group where opioids were administered conventionally	—

Countries

Japan

Contacts

Public ContactMotoi Kumagai

Iwate medical university hospital Department of Anesthesiology

motoij@iwate-med.ac.jp0196137111

Outcome results