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PTB-Diag

PTB Diagnostic ECG Database

Clinical & physiological
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A collection of high-resolution 15-lead ECG recordings from healthy volunteers and patients with a range of cardiac conditions, widely used for diagnostic ECG and myocardial infarction research.

PTB / PhysioNetOfficial source

Signal specification fields

Each signal (lead) in a WFDB record is described by the following header fields. Optional fields may be absent depending on the record.

FieldRequiredDescription
File nameRequiredName of the signal (.dat / .xyz) file this channel is stored in.
FormatRequiredStorage format code for the samples (e.g. 16).
Samples per frameOptionalSamples of this signal per frame (for multi-frequency records).
SkewOptionalNumber of samples this signal is skewed relative to others.
Byte offsetOptionalByte offset of sample data within the signal file.
ADC gainOptionalADC units per physical unit (e.g. per mV).
BaselineOptionalADC value corresponding to 0 physical units.
UnitsOptionalPhysical units of the signal (e.g. mV).
ADC resolutionOptionalADC resolution in bits.
ADC zeroOptionalADC output for zero input (midrange ADC value).
Initial valueOptionalFirst sample value of the signal.
ChecksumOptional16-bit checksum of all samples (integrity check).
Block sizeOptionalBlock size for reading the signal file (0 = unbuffered).
DescriptionOptionalFree-text label / lead name for the signal (e.g. i, ii, v1, vx).

Example record

#s0001_re

A worked example showing the values for one PTB diagnostic ECG record — 12 standard leads plus the 3 Frank (XYZ) leads.

Record ID

s0001_re

Sampling rate

1000 Hz

Samples

38,400

Duration

38.4 s

Signals

15

Leads (15)

LeadFile nameFormatADC gainADC resolutionADC zeroInitial valueChecksumBlock size
is0001_re.dat162000160-561-10650
iis0001_re.dat162000160-13412620
iiis0001_re.dat16200016042723790
avrs0001_re.dat162000160348-1970
avls0001_re.dat162000160-494174810
avfs0001_re.dat162000160146-173190
v1s0001_re.dat162000160-129-49130
v2s0001_re.dat162000160-221-149220
v3s0001_re.dat162000160-192177600
v4s0001_re.dat162000160-477-158990
v5s0001_re.dat162000160-317128400
v6s0001_re.dat162000160-260-144470
vxs0001_re.xyz162000160-4620310
vys0001_re.xyz162000160168152630
vzs0001_re.xyz162000160145-16000

Patient

Age83
SexNot recorded
ECG date09/08/1990
GroupPatient

Diagnosis0/9 recorded

Reason For Admission
Not recorded
Acute Infarction Localization
Not recorded
Former Infarction Localization
Not recorded
Additional Diagnoses
Not recorded
Smoker
Not recorded
Number Of Coronary Vessels Involved
Not recorded
Infarction Date Acute
Not recorded
Previous Infarction 1 Date
Not recorded
Previous Infarction 2 Date
Not recorded

Hemodynamics0/10 recorded

Catheterization Date
Not recorded
Ventriculography
Not recorded
Chest X Ray
Not recorded
Peripheral Blood Pressure Syst Diast
Not recorded
Pulmonary Artery Pressure At Rest Syst Diast
Not recorded
Cardiac Output At Rest
Not recorded
Cardiac Index At Rest
Not recorded
Aorta At Rest Mean
Not recorded
Left Ventricular Enddiastolic Pressure
Not recorded
Echocardiography
Not recorded

Therapy0/6 recorded

Infarction Date
Not recorded
Admission Date
Not recorded
Medication Pre Admission
Not recorded
Lytic Agent
Not recorded
In Hospital Medication
Not recorded
Medication After Discharge
Not recorded

Clinical fields are frequently unrecorded for individual records in this database.