Artificial Intelligence Laboratory and NIMP ESN



«Stress Tests (Bicycle Ergometry)»

See Myocard-12 photos and software screenshots

Delivery set:

  • Cardiomodule -4-USB
  • Leads cable,
  • Adaptors for  single-use electrodes,
  • Single-use electrodes,
  • Cable for connection to bicycle ergometer,
  • «User manual», «a Form».

    Additionally needed:

  • a PC,
  • a bicycle ergometer or Kettler treadmill (without automatic ABP measurement)
  • bicycle ergometer Corival (with automatic ABP measurement)
  • a vacuum stand

Technical features

  • Number of leads…………………3,12
  • Electrodes………………………..
  • Stress protocols……………..Bruce,.Astrand, Bengtsson, pediatricCHF1, CHF2, Comell,  as well as user-defined ones
  • Parameters controlled  during all the testing:

    — ST segment displacements,
    — heartbeat rates exceeding submaximum values,
    — appearing paroxysmal tachycardia,
    — pacemaker changes (atrial rhythm, AV- rhythm, atrial fibrillation, etc.)
    — extrasystole over 1/10,
    — , — appearing multiple extrasystoles appearing SA or AV blocks,
    — deterioration of intraventricular conductibility,
    — appearing temporary WPW syndrome, — a considerable change in the range of Q or R waves.
You can use any bicycle ergometer that allows for stress tests in 5 W increments starting from 25 W. The device can also work with a treadmill. In this case, the stress will be defined by the treadmills conveyor belt tilt angle and speed.
In case of a bicycle ergometer or a Kettler treadmill, the stress can be defined from a PC, otherwise it has to be input manually.
The PC monitor should be no less than 22; a COM port is required if bicycle ergometer control is provided for.

The following information is displayed during the test:
  • any number of monitored leads, in a separate window,
  • a window with an average QRST in a calm condition, with an option to have the average QRST and the current ECG overlapping 
  • a window showing ST segment displacement graphs with numeric values,
  • cardiac rate in the form of graphs and numbers,
  • detected numbers of ventricular and supraventricular extrasystoles, considerable arrhythmias and pauses,
  • ABP in the form of graphs and numbers,
  • test performance data (time of test, phase time, load intensity, etc.)
  • recommendations to stop the stress test with details of abnormalities detected.
After the test has been completed, the doctor can also perform a hyperventilation test.

Using our successful experience in daily ECGs, we linked Holter Monitoring programs to our Exercise ECG Testing program: All the ECG is once more treated by a Holter Monitoring program, and the user is offered a Holter Navigator extremely rich in its functionalities, where the doctor can see any ECG disorders. But the most important thing is certainly a wide range of tools to analyze STs and arhythmias. Like in a Holter, the program automatically generates a record for a conclusion also taking into account the doctors editing. The record shows data for periods of exercise and rest.

A test record includes:
  • a summarizing table (phases, stresses, time, pressure, pulse, ST)
  • a conclusion including a functional category for patients with the ischemic heart disease or a level of tolerance to exercise loads,
  • recommendations on the motion of patients with the ischemic heart disease according to their functional categories,
  • ECG fragments, trend graphs.
In addition, the program maintains a test data archive of an unlimited size, exports records to the DOC format, supports a CD/DVD manager, and collects test statistics.

Application Scope Limitations

1) Absolute counterindications to exercise tests:
an acute myocardial infarction period (less than 4 weeks),
preinfarction angina, a potential stroke condition,
acute thrombophlebitis,
circulatory deficiencies referring to degrees IIB and III,
considerable respiratory distress,

2) Relative counterindications to stress tests:
cardiac or arterial aneurysm,
considerable hypertension (over 200 mm Hg),
tachycardia over 100 beats per minute.,
serious dysrhythmias shown in anamnesis,
bundle branch blocks,
WPW syndrome,
cerebrovascular disturbances,
hearing or sight loss or glaucoma.
Click here for other programs of "MYOCARD-12" complex: