Effect of Interscalene Block on Heart Rate Variability (HRV)

Effect of Interscalene Block on Heart's Autonomic Nervous System With Heart Rate Variability Measurement

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01185457

Enrollment

Registered

2010-08-20

Start date

2010-06-30

Completion date

2012-09-30

Last updated

2012-10-29

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

Conditions

Autonomic Nervous System, Beach Chair Position, HRV, Interscalene Block, Shoulder Surgery

Keywords

Shoulder surgery, Beach chair position, Interscalene block, HRV, Autonomic nervous system

Brief summary

The Left interscalene block has a different effect on heart's autonomic nervous system, as measured with Heart Rate Variability, compared to Right interscalene block

Interventions

None listed

Study design

Observational model

CASE_CROSSOVER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

20 Years to 45 Years

Healthy volunteers

Inclusion criteria

* elective shoulder surgery * Age 20- 45 years old * ASA I - II

Exclusion criteria

* Coagulopathy disorders * Infection at the puncture site for the interscalene block * Neurologic deficit in the arm that is going to be operated * Allergy to local anesthetics * BMI \> 35 * Psychiatric disorders * Patient's refusal * Problems with patient communication * Arrythmia * Ischaemic heart disease * Diabetes mellitus * Thyroid function disorders * Patients with conduction disorders on the ECG * Electrolyte disorders (K+, Na+, Ca++) * Patients on medication that affect the ECG

Design outcomes

Primary

Measure	Time frame	Description
Effect of interscalene block on Heart Rate Variability (HRV)	1 year	The Left interscalene block has different effect on heart's autonomic nervous system, as measured with HRV, than the Right.

Secondary

Measure	Time frame	Description
Interscalene block and beach chair positioning	2 years	Effect of interscalene block on hypotension during beach chair positioning

Countries

Greece

Outcome results