Heart Attack During Exercise Causes

Cardiology Hospital in Hyderabad

Dr Shiva Prasad’s cardiac centre is one of the best cardiac centres in Hyderabad. His philosophy is to provide the same cardiac care to his patients as those treated in the major European and North American centres. This well established cardiac centre offers evidence based treatment in a multidisciplinary approach with state of the art infrastructure. Each and every patient receives personalised care with empathy and dignity. This centre is equipped with facilities for ECG, 2D Echo, treadmill, angiogram, angioplasty (PTCA) and pacemakers. It is one of the few dedicated cardiac centres in Hyderabad equipped to offer evidence based treatment for heart attacks as per international standards.

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Doctor Profile

Dr Shiva Prasad K

MBBS (OSM), MRCP (UK), MRCP (London), CCT in Cardiology (UK)
Chief Interventional Cardiologist

  • CCT in Cardiology (Joint Royal Colleges of Physicians Training Board, UK)
  • Adult echocardiography accreditation (British Society of Echocardiography, UK)
  • MRCP (Royal College of Physicians, London, UK)
  • MBBS (Osmania Medical College, Hyderabad)
  • Advanced Life Support (ALS) course instructor- Resuscitation council (UK)

  • Consultant Interventional Cardiologist, KIMS Hospitals, Kondapur
  • Consultant Interventional Cardiologist, North Wales Cardiac Centre, UK
  • Specialist Registrar in Interventional Cardiology, Liverpool Heart and Chest Hospital, Liverpool, UK
  • Specialist Registrar in Core Cardiology, Mersey Deanery rotation, Liverpool, UK
  • Clinical fellow in Cardiology, Royal Liverpool University Hospital, Liverpool, UK
  • Specialist Registrar in Tertiary Intensive care unit and Respiratory medicine, University Hospital of Wales and Singleton Hospital, UK
  • General Medicine training rotation in various UK Hospitals

  • Management of Acute Myocardial Infarction (Heart Attack)
  • Primary PTCA (Stenting Procedure for Heart Attack)
  • All forms of Complex Angioplasty (Left main stem Stenting, graft angioplasty and bifurcation lesions)
  • Rotablation for calcified lesions
  • Pressure wire, IVUS and OCT studies
  • Evaluation of chest pain/angina
  • Evaluation of heart failure
  • Arrhythmia assessment
  • Assessment of sudden cardiac death in the family
  • Lifestyle changes in coronary artery disease

  • Koyalakonda S.P, Patel B, Nair S, Perry R, Appleby C. Outcomes of primary percutaneous coronary intervention to the left main stem- a large tertiary cardiac center experience. Euro intervention. 2015May (abstract)
  • Koyalakonda S, Nair S, Patel B, Mills J, Morris JL. Cardiac arrest in the catheter laboratory: feasibility and outcomes of the mechanical chest compression device. Catheterization and Cardiovascular Interventions. 2014 May; Volume83 (Issue supplement S1, abstract).
  • Koyalakonda S, Anderson M, Burgess MI. How frequently should echocardiographic screening for pulmonary hypertension be performed in scleroderma? Eur J Echocardiogr (2011) 12 (suppl 2, abstract).
  • Koyalakonda S, Pyatt J. High output heart failure caused by a large pelvic arteriovenous malformation. JRSM Short Rep. 2011 Aug; 2(8):66.
  • Koyalakonda S, Mediratta N, Ball J, Royle M. A rare case of aortic valve myxoma: an unusual cause of embolic stroke. Cardiology.2011; 118(2):101-3.
  • Koyalakonda S, Krishnan U, Hobbs WJ. A rare instance of multiple valvular lesions in a patient with Wegener’s granulomatosis. Cardiology.2010; 117(1):28-30.
  • Singh S, Koyalakonda S, Krishnan U. Severe dilated cardiomyopathy resulting in globular cardiac silhouette on chest x-ray. Journal of Echocardiography. September 2011, Volume 9, Issue 3, 123-124.
  • Krishnan U, Koyalakonda S, Pyatt JR. Inadvertent left ventricular pacing through a patent foramen ovale diagnosed by trans-thoracic echocardiography. Journal of Echocardiography. June 2011, Volume 9, Issue 2, 75-76.
  • Koyalakonda S, Saltissi S. Left ventricular systolic dysfunction. Oxford Desk Reference: Geriatric Medicine.

  • Left main stem angioplasty (TAP stenting) in a morbid obese patient-Oral presentation, PCI Wales2017, Cardiff.
  • Can angiographic 3D reconstruction guide stenting strategy in complex left main stem bifurcation PCI? Oral presentation, EUROPCR2015, Paris.
  • Rotablator for unstable calcified lesions- Oral presentation, EUROPCR2014, Paris.
  • Cardiac arrest in the catheter laboratory: feasibility and outcomes of the mechanical chest compression device. SCAI conference2014, Las Vegas.
  • An unusual kit for Primary angioplasty: Successful combined use of Tornus Microcatheter, Guidelines, and Rotablator in acute Inferior Myocardial infarction through a 6 French guiding catheter from the radial approach. TCT conference2013, SanFrancisco.
  • How frequently should echocardiographic screening for pulmonary hypertension be performed in scleroderma? EUROECHO conference2011, Budapest.


Meet Doctor

Dr. Shiva Prasad K

Dr Shiva Prasad is a leading consultant interventional cardiologist who specialises in the treatment of heart attacks, primary angioplasty, complex coronary interventions and heart failure. Majority of the coronary procedures are done via radial approach.

Dr Shiva Prasad graduated from prestigious Osmania medical college in 2002. After graduation he decided to move to the United Kingdom for higher specialist medical training. After rotating in various university hospitals in the UK, he achieved MRCP in general medicine from Royal College of Physicians, UK.

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Heart Diseases and Conditions We Treat

Heart Attack

Heart attack is a medical emergency in which the blood supply to the heart is compromised. The blood vessels (coronary arteries) may be blocked due to plaque rupture (the rupture of hard and thick fatty deposits) and subsequent clot formation.

Heart Failure

Heart failure is a heart condition where muscles in the heart fail to pump enough blood required for the body. Though it is a serious health condition, prompt monitoring, lifestyle changes, and treatment

Cardiac arrest

Cardiac arrest is a condition where heart stops working suddenly and unexpectedly. The person looses consciousness and remains unresponsive. The patient needs immediate cardiopulmonary resuscitation (CPR) and or use of defibrillator.

Atrial Fibrillation

The chaotic electric impulse in the upper chambers of the heart sets them into irregular and rapid pumping. This results in fast and irregular heart rhythm in the range of 100 to 175 beats per minute.

Enlarged Heart

Enlarged heart or cardiomegaly is a sign of an underlying heart or vascular condition. Cardiomegaly is also associated with heart attacks, infections, valve problems and rarely in pregnancy.

Congenital Heart Disease (CHD)

Congenital heart disease occurs as a consequence of a structural abnormality in the heart at birth such as defects in the heart valve, hole in the heart, problems in arteries and veins connected to heart or problems


Arrhythmias or dysrhythmias are a group of problems that are noted by altered heart rate caused by disruption of normal sequence of electrical impulses to the heart. In arrhythmias, your heart may beat faster

Heart Valve Disease

Heart valve disease is the term used to define diseases of heart valves which control the flow of blood across the 4 chambers of heart. Valve is a leaflet like structure that act as one-way allowing the blood to flow forward.

Angina Pectoris

Angina is a clinical term to the symptoms of chest pain and discomfort resulting usually from coronary artery disease (inadequate blood supply to the heart muscle due to narrowed coronary arteries).

Coronary Artery Disease (CAD)

Coronary artery disease occurs as a result of blockage of arteries supplying blood to the heart (Coronary artery). CAD may cause angina (chest pain), shortness of breath and heart attack.

Peripheral Artery Disease (PAD)

Peripheral artery disease is the reduced blood flow in the limbs due to narrowed arteries. This disease is marked by mild to severe pain of the legs while walking (claudication)

Diagnostics Services

Electrocardiogram (ECG)

An ECG or electrocardiogram is useful in measuring the electrical activity of the heart. This basic test result is helpful in assessing heart symptoms such as chest pain, breathing problems, suspected heart attack and fainting (syncope). ECG procedure is in clinical use for a long time and is very safe non invasive procedure.

2D Echo

A 2D echocardiogram is a cardiac imaging test using ultrasound. The images of 2D echo are extremely beneficial in viewing the chambers of heart, valves, and major blood vessels to identify if there are any abnormalities. Some of the measurements taken in 2D echo are size of the chambers, pumping function, thickness of the walls, tumors or clots (if any), pressure on the lungs, and birth defect in the heart.

Treadmill test

Treadmill test also known as cardiac stress test is useful in understanding the ability of heart to respond to external stress/ exertion in a controlled clinical environment. The ECG measurements taken at maximum exertion are compared with at rest measurements to assess indirectly for the possibility of narrowed coronary arteries. The treadmill test is useful in patients with suspected coronary artery disease and also for assessing exercise-induced irregularity in heart beat. The treadmill test is generally safe in expert supervision.

Coronary angiogram

Angiogram is used as an invasive imaging technique to view the blockages in the blood vessels (called as coronary arteries) on the surface of the heart. It is usually a day care procedure performed in the cath lab using a narrow tube called as catheter. An angiogram is helpful in the assessment of chest pains, angina and suspected heart attacks.


Dr Shiva Prasad’s cardiac centre is one of the few centres that offer radial artery procedures. We adopt latest technology and customize the treatment based on the patient’s medical condition for successful results. Some of the treatments provided:

  • Primary PTCA (Stenting Procedure for Heart Attack)
  • All forms of Complex Angioplasty (Left main stem Stenting, graft angioplasty and bifurcation lesions)
  • Rotablation for calcified lesions
  • All forms of coronary angioplasty and stenting
  • Rotablation
  • IVUS, OCT and pressure wire study
  • Pacemaker

Cardiac catheterization

Cardiac catheterization (cath) is an invasive procedure involving insertion of a catheter (a narrow tube) into the heart and major blood vessel to diagnose and treat any abnormalities. The procedure may either be performed by entering from the femoral artery (in the groin) or through the radial artery (in the wrist). However, the radial route holds promising with faster recovery.

Percutaneous coronary intervention (PCI) or percutaneous transluminal coronary angioplasty (PTCA):

A PCI is a minimally invasive cath lab procedure to open up the narrowing in the coronary artery and place a stent to ensure free blood flow. In angioplasty, a balloon is inflated at the blocked area to stretch the artery and push the plaque to the side in order to restore blood flow. The interventional cardiologist thoroughly studies the patient and the medical condition before deciding the need for these procedures.

Patient testimonials

It’s always the word of mouth that’s the best advice. Here are some of our…

Treatment is excellent. Doctor's interaction with patients is marvelous , the way he explains to patients is in a friendly way

Mr.Adam Shaffi Shaik

Good explanation which can be understood by a common man, excellent treatment.

Mr. Keshav Gaddikopula

A Doctor Who Follows Medical Ethics in this Commercial World. A Best Doctor and A Good Human Being.


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