Database Open Access

CHARIS database

Published: Jan. 19, 2017. Version: 1.0.0

When using this resource, please cite the original publication:

Kim N, Krasner A, Kosinski C, Wininger M, Qadri M, Kappus Z, Danish S, Craelius W. Trending autoregulatory indices during treatment for traumatic brain injury. J Clin Monit Comput (2016) 30: 821. doi:10.1007/s10877-015-9779-3.

Please include the standard citation for PhysioNet:

Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG, Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank, PhysioToolkit, and PhysioNet: Components of a New Research Resource for Complex Physiologic Signals (2003). Circulation. 101(23):e215-e220.


The CHARIS database contains multi-channel recordings of ECG, arterial blood pressure (ABP), and intracranial pressure (ICP) of patients diagnosed with traumatic brain injury (TBI). The data is contributed by members of the CHARIS project which aims to systematize the analysis of relevant physiological signals, and create data-driven algorithms to search for potential predictors of acute clinical events for patients with acute brain injury.

Data Collection

Data acquisition units were connected to patient monitors installed in surgical intensive care unit (SICU) rooms of Robert Wood Johnson Medical Center of Rutgers University, and were activated upon arrival of a patient with diagnosis of brain injury and requiring an ICP bolt/ventriculostomy. In most cases, patients were sedated and ventilated. Arterial blood pressure (ABP) was continuously monitored with an indwelling catheter, and ICP was continuously monitored with either a subarachnoid bolt or ventriculostomy. Elevations of ICP above 20 mmHg were treated with boluses of mannitol and mild hyperventilation.

Signals were acquired from the outputs of clinical monitors routinely employed in the SICU, via isolated and filtered (25 Hz cutoff) outputs from a General Electric TRAM-rac 4A. The sampling rate was 50 Hz with a resolution of 1.41 mV at ±5 V analog input range, which is equivalent to a pressure resolution of 0.14 mmHg and a dynamic range of ±500 mmHg. ICP was continuously monitored with micro transducers (Camino Direct Pressure Monitor, Camino Laboratories, San Diego, CA) that were inserted intra-parenchymally into the frontal cranium. In some patients, ICP was only available intermittently from a ventriculostomy. ABP was registered with a fluid-filled catheter in the radial artery (Arterial Line, Edwards LifeSciences Inc.). For more details, see the referenced paper.

Data Files

The data files are provided in standard WFDB format, numbered by patient number. Additional patient information is contained in the header files.


This data was contributed by William Craelius, professor of Biomedical Engineering at Rutgers University. See also the CHARIS-GUI physiotoolkit contribution, an integrated platform for detecting intracranial hypertension events.


Access Policy:
Anyone can access the files, as long as they conform to the terms of the specified license.

License (for files):
Open Data Commons Attribution License v1.0

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Name Size Modified
RECORDS 108 B 2017-01-09
SHA256SUMS.txt 2.0 KB 2019-02-20
charis1.dat 70.0 MB 2017-01-18
charis1.hea 247 B 2017-01-18
charis10.dat 121.8 MB 2017-01-18
charis10.hea 181 B 2017-01-18
charis11.dat 99.2 MB 2017-01-18
charis11.hea 237 B 2017-01-18
charis12.dat 117.6 MB 2017-01-18
charis12.hea 245 B 2017-01-18
charis13.dat 81.4 MB 2017-01-18
charis13.hea 245 B 2017-01-18
charis2.dat 386.2 MB 2017-01-18
charis2.hea 243 B 2017-01-18
charis3.dat 97.8 MB 2017-01-18
charis3.hea 241 B 2017-01-18
charis4.dat 41.2 MB 2017-01-18
charis4.hea 235 B 2017-01-18
charis5.dat 206.0 MB 2017-01-18
charis5.hea 240 B 2017-01-18
charis6.dat 47.4 MB 2017-01-18
charis6.hea 236 B 2017-01-18
charis7.dat 138.4 MB 2017-01-18
charis7.hea 224 B 2017-01-18
charis8.dat 98.2 MB 2017-01-18
charis8.hea 179 B 2017-01-18
charis9.dat 176.1 MB 2017-01-18
charis9.hea 260 B 2017-01-18