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The use of HPI (Hypotension probability indicator) during major intracranial surgery, prospective single-center randomized study.

The influence of prospective hypotension diagnosis with HPI (Hypotension probability indicator) parameter on hypotension incidence during major intracranial surgery, randomized controlled trial.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12621000162819
Acronym
HYPEX ( HYpotension Probability IndEX ) trial
Enrollment
40
Registered
2021-02-16
Start date
2018-03-01
Completion date
2020-06-30
Last updated
2021-02-22

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

Conditions

None listed

Brief summary

Major objective of this study is to assess HPI use to avoid hypotension through major intracranial surgery, Randomized prospective study is performed in a University hospital. Patients undergoing intracranial tumour resection with ASA status 1-3 are enrolled and randomly (1:1) assigned to interventional or control group. Anaesthesia is considered as standart care according to predefined protocol. HPI values are allowed only in intervention group. The value of more than 85% is considered as significant and in this case treatment to rise blood pressure is started. In control group HPI value is covered for anaesthesiologist. Number and duration of hypotensive events are used as primary indicator.

Interventions

Use if HPI (Hypotension probability indicator). To lower the incidence of perioperative hypotension in major intracranial surgery. HPI provided via EV1000 device (Edwards lifescience, Irvine, CA). EV1000 is an advanced monitor, which deeply analyses invasive arterial pressure curve from radial artery line. HPI is calculated parametr by artificial inteligence algorithm (machine learning based), which is supposed to predict hypotension events in the near future. Use of HPI in intervention arm of s

Use if HPI (Hypotension probability indicator). To lower the incidence of perioperative hypotension in major intracranial surgery. HPI provided via EV1000 device (Edwards lifescience, Irvine, CA). EV1000 is an advanced monitor, which deeply analyses invasive arterial pressure curve from radial artery line. HPI is calculated parametr by artificial inteligence algorithm (machine learning based), which is supposed to predict hypotension events in the near future. Use of HPI in intervention arm of study, preemptive treatment of hypotension through standard anaesthesia care. The measurement of HPI is continual, the intervention period lasts through whole surgery duration. Intervention provided by skilled anesthesiologist in dept.of anaesthesia and critical care of university hospital.

Sponsors

University Hospital Pilsen, Czech Republic
Lead SponsorHospital

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

Major supratentorial brain surgery for tumor resection. Expected length more than 1hour. ASA physical status 1-3

Exclusion criteria

ASA physical status 4-5.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026