Electrocardiography

Heart has SA node, AV node, bundle of His, right bundle branch, interventricular septum, left bundle branch, Purkinje fibers, and ventricular myocardium.

Electrocardiography (ECG) is a technique of graphic records of heart work.

Method of the Procedure

Patient does not need any preliminary preparations before examination. The examination causes no pain. Patient lies down flat on the back on a bed. During a standard procedure an electrode is put on each extremity. Doctor puts electroconductive gel on the electrodes. 6 chest electrodes are put on the chest. After doctor has placed the electrodes ECG procedure is performed. The examination takes about a minute. Finally, the patient wipes the gel off. Doctor interprets the ECG and hands the ECG report with its description.

ECG is Recommended

  • Suspicion of heart disease (chest pain, irregular rhythm, palpitation, short breath)
  • Risk factors for cardiovascular diseases, especially their combination:

· Close relatives have cardiovascular diseases –men before age 55 and women before age 65

Hypercholesterolaemia (especially high level of low-density lipoproteins, low level of high-density lipoproteins)

Smoking cigarettes

Overweight

Eating too much salt

Hypodynamia

Stresses

Male

Old age

Diabetes and intolerance to glucose

  • Inpatient supervision of cardiology patients
  • Chronic inflammatory diseases of internal body parts on suspicion of cardiovascular response
  • Endocrine diseases, especially thyroid conditions, pancreas and adrenal gland
  • Cardiovascular complication control, in taking some asthma-control medications frequently
  • Before surgery
  • As part of preventive checkups before permission for certain professions pilots, drivers, sailors
  • Pregnancy

Other indications are possible.

Diseases ECG can detect include:

  • Ventricular hypertrophy
  • ECG showing ischemia, myocardial infarction, stenocardia, post-infarction cardiosclerosis
  • Disorders of cardiac rhythm and conduction

ECGs are performed in the following diseases:

  • Cardiomyopathy
  • Dishormonal climacteric cardiopathy
  • Pericarditis
  • Myocarditis
  • Congenital heart diseases
  • Acquired heart diseases
  • Pulmonary embolism and pulmonary heart disease
  • Cardiac tumours
  • Electrolyte disorders
  • Electrical stimulation of the heart
  • Taking some medications
  • Obesity
  • Pheochromocytoma
  • Miksedema
  • Thyrotoxicosis
  • Disorders of blood supply to brain
  • Peritoneal disorders
  • Nephritis