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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04094974
Other study ID # CS009
Secondary ID
Status Completed
Phase
First received
Last updated
Start date October 12, 2019
Est. completion date October 3, 2020

Study information

Verified date January 2021
Source DyAnsys, Inc.
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

This study aims to determine the relationship between heart rate variability and intraoperative brain relaxation conditions in patients with brain tumors.


Description:

Patients undergoing brain surgery for treatment of brain tumors will be studied to determine the relationship between heart rate variability and intraoperative brain relaxation conditions.


Recruitment information / eligibility

Status Completed
Enrollment 58
Est. completion date October 3, 2020
Est. primary completion date October 3, 2020
Accepts healthy volunteers No
Gender All
Age group 18 Years to 75 Years
Eligibility Inclusion Criteria: - Patient aged 18 to 75 years - ASA(American Society of Anesthesiologists ) I - III - Patients undergoing surgery for supratentorial tumors - Glasgow coma scale > 10 Exclusion Criteria: - Patient aged below 18 and above 75 years. - Pregnancy - ASA(American Society of Anesthesiologists) IV-V - Previous cranial surgery - Morbid obesity ( BMI>40) - Ocular injury/ Glaucoma - Head injury - Patient on beta blockers, ACE(angiotensin-converting-enzyme) inhibitors, Clonidine - Diabetes mellitus for more than 5 years

Study Design


Intervention

Device:
ANSiscope
Heart rate variability will be assessed using ansiscope before surgery

Locations

Country Name City State
India National Institute of Mental Health and Neurosciences Bengaluru Karnataka

Sponsors (1)

Lead Sponsor Collaborator
DyAnsys, Inc.

Country where clinical trial is conducted

India, 

References & Publications (9)

Cold GE, Tange M, Jensen TM, Ottesen S. "Subdural' pressure measurement during craniotomy. Correlation with tactile estimation of dural tension and brain herniation after opening of dura. Br J Neurosurg. 1996 Feb;10(1):69-75. — View Citation

Furgala A, Madroszkiewicz D, Madroszkiewicz E, Goscinski I, Kolasinska-Kloch W, Moskala M, Thor PJ. Autonomic system disturbances in patients with increased intracranial pressure caused by brain tumors evaluated by heart rate variability. Folia Med Cracov. 2007;48(1-4):35-44. — View Citation

Hernández-Palazón J, Fuentes-García D, Doménech-Asensi P, Piqueras-Pérez C, Falcón-Araña L, Burguillos-López S. A comparison of equivolume, equiosmolar solutions of hypertonic saline and mannitol for brain relaxation during elective supratentorial craniotomy. Br J Neurosurg. 2016;30(1):70-5. doi: 10.3109/02688697.2015.1109061. Epub 2015 Nov 16. — View Citation

Jadhav T, Sriganesh K, Thirthalli J, Reddy KRM, Venkataramaiah S, Philip M, Naveen Kumar C, Armugham SS. Effect of Atropine Premedication on Cardiac Autonomic Function During Electroconvulsive Therapy: A Randomized Crossover Study. J ECT. 2017 Sep;33(3):176-180. doi: 10.1097/YCT.0000000000000417. — View Citation

Li J, Gelb AW, Flexman AM, Ji F, Meng L. Definition, evaluation, and management of brain relaxation during craniotomy. Br J Anaesth. 2016 Jun;116(6):759-69. doi: 10.1093/bja/aew096. Epub 2016 Apr 27. Review. — View Citation

Rasmussen M, Bundgaard H, Cold GE. Craniotomy for supratentorial brain tumors: risk factors for brain swelling after opening the dura mater. J Neurosurg. 2004 Oct;101(4):621-6. — View Citation

Robba C, Santori G, Czosnyka M, Corradi F, Bragazzi N, Padayachy L, Taccone FS, Citerio G. Optic nerve sheath diameter measured sonographically as non-invasive estimator of intracranial pressure: a systematic review and meta-analysis. Intensive Care Med. 2018 Aug;44(8):1284-1294. doi: 10.1007/s00134-018-5305-7. Epub 2018 Jul 17. — View Citation

Schmidt EA, Despas F, Pavy-Le Traon A, Czosnyka Z, Pickard JD, Rahmouni K, Pathak A, Senard JM. Intracranial Pressure Is a Determinant of Sympathetic Activity. Front Physiol. 2018 Feb 8;9:11. doi: 10.3389/fphys.2018.00011. eCollection 2018. — View Citation

Weickenmeier J, Saze P, Butler CAM, Young PG, Goriely A, Kuhl E. Bulging brains. J Elast. 2017 Dec;129(1-2):197-212. doi: 10.1007/s10659-016-9606-1. Epub 2016 Oct 24. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Brain relaxation Tight Brain-the brain surface is jutting out or expanding beyond the craniotomy margins, brain pulsations are not clearly defined.
Brain surface at level of craniotomy margins, Brain pulsations faintly observed
Brain surface just below the surface of craniotomy margin. Brain pulsations well seen.
Brain surface well below the surface of craniotomy margin, well retracted in to the cranial cavity with good brain pulsations.Brain relaxation score will me measured only once. There is no follow up
2hours
Secondary Hemodynamic Measurement-Heartrate The change in hemodynamic variable heart rate in beats per minute will be measured through the study period 2hours
Secondary Hemodynamic Measurement-Bloodpressure The change in hemodynamic variable blood pressure in mmHg will be measured through the study period 2hours