Correlation Between the R-R Interval of the Electrocardiogram and the Intracranial Pulse Wave Interval Assessed by a Noninvasive Method in Healthy People

Federal University of São Paulo103 enrolled

Overview

Heart rate variability (HRV) is a well-established cardiovascular and autonomic health metric in the medical literature. However, its applicability is limited by the difficulty of analysis and interpretation in clinical practice. Given that the intracranial pressure (ICP) waveform is the manifestation of the vascular pulse wave that originates from cardiac muscle contraction, we will evaluate whether the interval between ICP pulse waves assessed noninvasively with Brain4care technology is the same as the R-R interval assessed by electrocardiography in healthy patients, in an attempt to universalize autonomic analysis in clinical practice.

Study Type

OBSERVATIONAL

Enrollment

103

Conditions

Heart Rate Variability (HRV)Intracranial Pressure Change Pulse Rate Autonomic Nervous System Activity

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 60 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Healthy adults from 18 to 60 years old. Exclusion Criteria: * The exclusion criteria were as follows: (1) diagnosed cardiovascular disease, including arrythmia (2) symptoms of illness during the recruitment time, (3) restriction in physical activity, and (4) restriction on using wearable devices.

Outcomes

Primary Outcomes

Evaluate the correlation between R-R interval and R-R equivalent on the noninvasive intracranial compliance monitor and evaluate their correspondence considering the Time domain (HR, NN, NN50, RMSSD, SDNN, pNN50) in health patients.

The participants will be asked to wear the noninvasive ICP waveform monitor band, an EKG and finger oximeter (photoplethysmography) monitor for 15 minutes in supine position with an 15-degree head elevation. All recordings were performed in a bright and quiet room.

Time frame: "From enrollment to the end of recruitment at 8 weeks"