To know more about Cardiology

What is Cardiology?

Derived from the Greek words, “Cardia” meaning heart and “logy” that means “study of”, cardiology is the branch of medicine that deals with the defects and diseases associated with the heart. Such diseases are managed by cardiologists.

The surgery, however, is performed by heart surgeons who specialize in surgical procedures to correct heart problems. Below are some of the important things people should know about cardiovascular diseases:

Types of Cardiovascular Diseases

Most of the heart problems occur due to structural problems, blood clots and damaged vessels. Some of the most common types of cardiovascular diseases include: Angina, Arrhythmia, Heart Attack, Heart Failure, Rheumatic Heart Disease, Congenital Heart Disease and Valvular Heart Disease


Most of the cardiovascular diseases share some common signs and symptoms such as shortness of breath and pain in the chest. This leads to confusion among the patients and instead of visiting a cardiologist they start self-diagnosis or even self-treatment. Self-treatment may worsen the situation.

To avoid serious complications, people are advised to seek medical assistance and get the diagnosis done for suitable treatment done on time.  Below are some of the common diagnostic tests that are performed to diagnose cardiovascular diseases:

  • Blood Tests - The doctors perform various lab tests to check for the usual signs of heart diseases and their risk factors. Some of the things that are checked include troponins, cholesterol level, lipid components of blood and fats.
  • Electrocardiogram (ECG) - One of the most common tests, an EKG/ECG is used to record the electrical activity of the heart. An electrocardiogram shows the speed and the rhythm of the heart. During this painless test, the patient is strapped to the machine with several patches over the chest, ankles and wrists. Then, the doctor records the activities of heart on a small portable machine. This test is usually used to determine angina
  • Echocardiogram - Also known as echocardiography or diagnostic cardiac ultrasound, this test is used to check the working and structure of the heart. The test uses sound waves that create a moving picture of the heart on the monitor. At times, doctors also combine echocardiography with Doppler to see the areas of the heart with poor blood supply. This is also used to check which heart muscles are not contracting normally.
  • Stress Test - This test is performed to check how the patient’s body reacts to the external stress. The patient is asked to run on a treadmill with the patches of EKG/ECG placed over their body which is used to measure the heart’s activity. People who cannot exercise are given pills that increase their heart rate.
  • Holter Monitoring - Doctors perform Holter monitoring to check irregularities in the heart rhythm which are not easily detected during an ECG exam. The portable device is usually of a camera’s size and has wires with silver dotted electrodes that are stuck on the skin. The patient needs to wear a Holter monitor to record a continuous ECG. The test lasts for at least 24 to 72 hours.
  • Cardiac Catheterization - Another test to diagnose cardiovascular disease, cardiac catheterization is an invasive procedure in which doctors insert a long thin tube, known as a catheter, in an artery or vein in neck, arm or groin. The tube is then threaded through the blood vessel to the heart. A contrast dye is also inserted through the catheter to get detailed images of the valves, coronary arteries and heart chambers. The test is performed to examine the working of the heart by measuring pressure and flow of the blood.
  • Cardiac Computerized Tomography (CT) Scan - A common imaging test, a cardiac CT scan is used to collect the images of the heart and chest to check for the issues. During the test, the patients are made to lie on a table inside the machine which consists of an X-ray tube that scans the body and collects images.
  • Cardiac Magnetic Resonance Imaging (MRI) - This test is performed to get 3D images of the heart. This imaging test uses magnets, radio waves and a computer to create the pictures that help the doctors in determining the heart problem.



Once the diagnosis is done, the doctors suggest the best suitable treatment for the patients. Here are some of the common treatment options that are followed for cardiovascular diseases:

  • Lifestyle Changes - Doctors advise patients to follow a healthy lifestyle that includes eating a low-fat diet, performing regular exercise, quitting smoking and alcohol.
  • Medications - In cases where lifestyle changes are not enough to treat the heart disease, the doctors prescribe medications. The prescription depends on the type of heart disease the patient has been diagnosed with.
  • Pacemakers or ICD - Mostly used for patients suffering from arrhythmia, a cardiac pacemaker or an implantable cardioverter defibrillator (ICD) are devices that are implanted in the chest or abdomen to control irregular heartbeats. The devices are placed through minor surgery.
  • Surgery - Surgeries are also performed in severe cases when medications cannot treat the patient. Some of the common heart surgeries that are performed include coronary artery bypass grafting, Heart Valve Repair or Replacement and percutaneous coronary intervention and heart transplant



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