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Nonoinvasive HPI in Beach-chair Position

NCT07554599 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-05-08

No results posted yet for this study

Summary

Intraoperative hypotension (defined as mean arterial pressure \<65 mmHg) is a common occurrence during anesthesia and has been associated with increased risk of intraoperative hypoxia and postoperative complications, including stroke and acute kidney injury. Preventing intraoperative hypotension is therefore critical to reducing postoperative morbidity.

The number of patients undergoing arthroscopic shoulder surgery has been increasing. When performed in the beach chair position, gravitational effects reduce venous return, decrease cardiac output, and predispose patients to hypotension. Anesthetic agents further impair autonomic regulation and vascular tone, exacerbating the risk. Because the brain is positioned above the heart, cerebral perfusion pressure may decrease significantly, increasing the risk of intraoperative ischemia and postoperative neurological complications. Active monitoring and prevention of hypotension are thus essential.

The noninvasive Hypotension Prediction Index (HPI) is a novel, non-invasive tool designed to predict impending hypotensive events and guide timely intervention. While it has been evaluated in some small randomized controlled trials, there is currently a lack of RCTs specifically assessing the use of non-invasive HPI-guided management in patients undergoing arthroscopic shoulder surgery in the beach chair position.

Conditions

  • the Intraoperative Hypotensionn
  • the Brain Exygenation

Interventions

DEVICE

HPI

non-invasive HPI

DEVICE

no HPI

no non-invasive HPI

Sponsors & Collaborators

  • National Taiwan University Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
65 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-27
Primary Completion
2031-12-31
Completion
2032-01-31

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07554599 on ClinicalTrials.gov