ECG is an important basis for doctors to diagnose patients with cardiovascular disease, accurate or not is a very serious matter, according to the requirements of the measurement method, hospital clinical use of ECG should be regular compulsory certification, as much as possible to prevent the measurement of electrocardiograph (ECG) misalignment and reduce misdiagnosis misdiagnosis, to ensure broad patient patient's health. Therefore, periodic verification of electrocardiograph (ECG) become the measurement management in hospital is an important part of, is also a systems engineering.

Clinical application of 1 ECG

Electrocardiograph (ECG) instrument is bioelectricity tracings from heart activity, widely used in clinical diagnosis and medical research on biological wave.

Electrocardiogram machine application in clinic has a history of nearly 100 years. Early in 1903, Einthoven using string galvanometer record human heart current graph, forming a rudiment of ECG, creating a history of electrocardiography. Then the ECG tracing technology through the continuous development and improvement, promotion and application of electrocardiogram in clinic as an important means of heart disease diagnosis provides a convenient. In China has spread to the most basic medical units.

The electrical activity of the heart using special technology can record ECG information to other tests can not be obtained, the various uses including:

The display of cardiac electrophysiology, anatomy, metabolic and hemodynamic changes, and provide basic information of all kinds of heart disease diagnosis and treatment.

The judgment of the type of arrhythmia.

With myocardial infarction may the premonitory symptoms such as chest pain, dizziness, first examination or syncope patients.

The diagnosis of angina pectoris. When caused by coronary insufficiency, angina pectoris, ECG changes.

The part of patients with atrial ventricular hypertrophy can be shown in electrocardiogram.

Help the diagnosis of myocardial disease pericarditis.

And help to understand the effect of some drugs and electrolyte and acid-base imbalance on myocardium.

The ECG monitoring in critically ill patients. Because the ECG is quantitative, accurate, simple, fast, reliable and economic advantages, so the ECG equipment has become a basic configuration for all levels of medical institutions.

In the 2 and analysis of ECG using status

Periodic verification of ECG measurement is an important part of hospital management, also is a complex system engineering. The core of metrological verification management work are done timely and accurate measurement, accurate measurement and management is the central task. The ECG of the El is to provide accurate and reliable basis for clinical diagnosis, is the hospital must bear the responsibility. So the ECG machine is accurate or not is important.

The city large-scale comprehensive hospital clinical in the 55 electrocardiograph metrological verification results show: a verification qualified for 53 units, accounted for 96.3% of the total number; not qualified for 2, accounting for 3.7% of the total number of, unqualified E1 are amplitude frequency characteristic and noise. Test Description: my city actual ECG machine should be inspection rate 100%, the qualified rate of more than 95%, and maintenance after measurement to reinspect the qualified rate is 100%, fully in line with the requirements of standard measurement management.

For the higher quality of medical service, the measuring staff in the detection, strict JJG543 - 1996 (cardiovascular and ECG machine verification regulation "(hereinafter referred to as the rules), the spirit of excellence work attitude, one by one of electrocardiograph of parameter audit in accordance with, the damping (damping is too large or too small will cause the distortion of the signal waveform recording), gain and pen temperature equal value although within the scope of the license, but not in the optimal value of the instrument, be subtle adjustment to the parameters and reach the best state.

Should also check the lead line contact performance, according to the specific situation and then repair or replacement; 3 sets of this round of verification for fine tuning of the damping, gain adjustment 2, fine tune the 2 sets of pen temperature; treatment lead wire etc. 2 sets of poor contact. Verification personnel should pay attention to the outside interference of ECG, recent times have found that although individual instruments through the verification, but susceptible to outside interference, use need to be equipped with good grounding settings. The city has asked various medical institutions must use proper grounding way is instrument grounding end and the earth substantive connected, shall not use heating or water pipes to replace, metal bed should be well grounded, to eliminate due to external interference caused by instrument misalignment. Serious interference source area, to take effective measures for protection, or simply move the workplace. The use of DC recommended conditions, to reduce the interference of AC electric field. Believe that with the full implementation of the above measures, the electrocardiogram machine verification qualified rate will be further improved, the instrument of the technical indicators to achieve a completely accurate and reliable, to maximize the protection of the rights of hospitals and the majority of the doctors and patients.

For the amplitude frequency characteristic and the noise is not qualified, ECG, by the hospital medical equipment maintenance department F1 (Medical Science) to repair the, trimming, by the measuring staff re certification until qualified to use in clinical. The ECG machine equipment maintenance maintenance department, identified in the first test cycle is shortened to a half year, half a year after the metrological verification, if qualified, verification period can be extended for a year that would otherwise remain for half a year. Such measures can greatly improve the equipment used in the qualified rate, to ensure the quality level of medical service.

On the one hand, the ECG machine used widely, on the other hand, the high frequency of use, especially in large general hospital. According to the fifty-five ECG monthly statistics, check monthly usage more up to 35O0 million, the general department (1000 12O0) passengers, at least (200 ~ 300). The use of such a high frequency of the face, to ensure that all the technical indicators are accurate and reliable, we must strengthen the electrocardiograph (and medical instruments) dynamic management, is the key to ensure the high quality of the use of. Because any instrument, by using long time high frequency, will inevitably appear such problems or such faults, affecting the quality of equipment. The hospital clinical engineer to do the equipment care physicians, fixed departments to implement professional management, responsible for their safe operation and maintenance of H. H strengthen the inspection, guidance of clinical operators the right to use the change, always check the technical parameters of abnormal. For recurring problems to be aware of, and timely detection and timely maintenance, good periodical preventive maintenance and kept in good condition. To ensure the operation quality of the instrument, should also pay attention to improve the ability of medical personnel skilled in the use of. The use of personnel should understand the basic principle of ECG, formulate strict management measures and the detailed rules of operation, skilled use of careful operation, is also an important factor to ensure the high quality of operation. At the same time, the hospital will have a plan to strengthen the universal training and large equipment operators specialized training, as a fundamental measure of quality assurance.

File management 3 cycle ECG test

Periodic verification plan making measurement year, El is to be examined in the ECG machine for reasonable arrangement, fully grasp all kinds of things should be seized, quantity detection rate and qualified rate should be. Due to the large medical institutions in a wide variety of measuring instruments, with multi sectoral, dispersion, all kinds of measuring instruments calibration cycle is different, verification of different batches, so often not easy to manage, may appear a small amount of missing. Therefore, hospital measurement management agency should establish detailed measuring instruments and technical archives according to the electrocardiograph in this unit actual conditions and specifications for register, established in accordance with the annual accounting measurement, distribution of a detailed registration apparatus, H inspection and test results and other information, to develop classification stage batch verification plan. The metrological verification qualified or the maintenance after passing the test of electrocardiogram machine, in accordance with the measures for the administration of strong inspection of measuring instruments, each paste measurement mark of conformity, clearly marked metrological verification h period and the period of validity, notices and supervision. Will the metrological verification certificate copy backup copies sent to various departments. Half a month prior to a round of verification cycle, submit a written application to the periodic verification of metrological verification institutions, timely arrangements for verification.

Do the other measures of the metrological management is the management department to grasp the instrument changes. According to the provisions of the system, clinical departments for electrocardiogram machine quantity distribution and types of changes, we must in the first time to fulfill the relevant procedures, metering management organizations in the archives to make corresponding records, not to tow does not extend, in order to ensure the effectiveness of the instruments. Not only the new instrument to achieve timely registration and weekly inspection arrangement and scrapped appliances also in accordance with the provisions of the metrology completing the formalities, do not missed not false detection, in metrological verification link grasp management work, promote the improvement of clinical service quality of electrocardiograph (ECG).