Disorders of the heart

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A diagram of a heart with an ECG indicator; diagrams like this are used in Cardiology.

Cardiology is the branch of medicine dealing with disorders of the heart and blood vessels. The field is commonly divided in the branches of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. Physicians specializing in this field of medicine are called cardiologists. Cardiologists should not be confused with cardiac surgeons who are surgeons who perform cardiac surgery - operative procedures on the heart and great vessels.

The term cardiology is derived from the Greek word καρδιά (transliterated as kardia and meaning heart or inner self).

Contents [hide] 1 The heart 1.1 Cardiac pacemaker (Electrical system of the heart) 1.2 Basic cardiac physiology 2 Disorders of the heart 3 Disorders of the coronary circulation 4 Sudden cardiac death (The abrupt cessation of blood flow, leading to death) 4.1 Treatment of sudden cardiac death 5 Disorders of the myocardium (muscle of the heart) 6 Disorders of the pericardium (outer lining of the heart) 7 Disorders of the heart valves 8 Disorders of the electrical system of the heart (Cardiac electrophysiology) 9 Inflammation and infection of the heart 10 Congenital heart disease 11 Diseases of blood vessels (Vascular diseases) 12 Procedures done for coronary artery disease 13 Devices used in cardiology 14 Diagnostic tests and procedures 15 Cardiac pharmaceutical agents 16 See also 17 External links

[edit] The heart

Main article: heart

[edit] Cardiac pacemaker (Electrical system of the heart)

• Electrical conduction system of the heart
  
  
  
  • Action potential
    
    
    
    • Ventricular action potential
    
    
    
    
  
  
  
  


• Sinoatrial node


• Atrioventricular node


• Bundle of His



• Purkinje fibers

[edit] Basic cardiac physiology

• Systole


• Diastole


• Heart sounds



• Preload


• Afterload


• Kussmaul's sign

[edit] Disorders of the heart

Main article: Heart Disease

[edit] Disorders of the coronary circulation

• Atherosclerosis


• Restenosis


• Coronary heart disease (Ischaemic heart disease, Coronary artery disease)



• Acute coronary syndrome
  
  
  
  • Angina
  
  
  • Myocardial infarction (Heart attack)
  
  
  
  

[edit] Sudden cardiac death (The abrupt cessation of blood flow, leading to death)

• Cardiac arrest

[edit] Treatment of sudden cardiac death

• Cardiopulmonary resuscitation (CPR)

[edit] Disorders of the myocardium (muscle of the heart)

• Cardiomyopathy
  
  
  
  • Ischemic cardiomyopathy
  
  
  • Nonischemic cardiomyopathy
    
    
    
    • Amyloid cardiomyopathy
    
    
    
    • Hypertrophic cardiomyopathy (HCM)
      
      
      
      • Hypertrophic obstructive cardiomyopathy (HOCM) (Idiopathic hypertrophic subaortic stenosis (IHSS))
      
      
      • Apical hypertrophic cardiomyopathy
      
      
      
      
    
    
    • Dilated cardiomyopathy
      
      
      
      • Alcoholic cardiomyopathy
      
      
      
      • Tachycardia induced cardiomyopathy
      
      
      • Takotsubo cardiomyopathy (Transient apical ballooning, stress-induced cardiomyopathy)
      
      
      
      
    
    
    • Arrhythmogenic right ventricular dysplasia (Arrhythmogenic right ventricular cardiomyopathy)
    
    
    • Restrictive cardiomyopathy
    
    
    
    
  
  
  
  
  


• Congestive heart failure
  
  
  
  • Cor pulmonale
  
  
  
  


• Ventricular hypertrophy
  
  
  
  • Left ventricular hypertrophy
  
  
  
  


• Primary tumors of the heart
  
  
  
  
  • Myxoma
  
  
  
  


• Myocardial rupture

[edit] Disorders of the pericardium (outer lining of the heart)

• Pericarditis


• Pericardial tamponade


• Constrictive pericarditis

[edit] Disorders of the heart valves

• Aortic valve disorders
  
  
  
  • Aortic insufficiency
  
  
  • Aortic stenosis
  
  
  • Aortic valve replacement
  
  
  • Aortic valve repair
  
  
  • Aortic valvuloplasty
  
  
  
  


• Mitral valve disorders
  
  
  
  
  • Mitral valve prolapse
  
  
  • Mitral regurgitation
  
  
  • Mitral stenosis
  
  
  • Mitral valve replacement
  
  
  • Mitral valve repair
  
  
  • Mitral valvuloplasty
  
  
  
  


• Pulmonary valve disorders
  
  
  
  
  • Congenital pulmonic stenosis
  
  
  
  


• Tricuspid valve disorders

[edit] Disorders of the electrical system of the heart (Cardiac electrophysiology)

• Tachycardia


• Cardiac arrhythmias
  
  
  
  • Supraventricular tachycardia (Fast rhythms that originate above the ventricles)
    
    
    
    • Atrial fibrillation
    
    
    • Atrial flutter
    
    
    • Atrial tachycardia
    
    
    • Sick sinus syndrome (Tachy-Brady syndrome)
    
    
    
    • AV nodal reentrant tachycardia (AVNRT)
    
    
    • AV reentrant tachycardia (AVRT)
    
    
    
    
  
  
  • Bigeminy
  
  
  • Premature ventricular contraction
  
  
  • Ventricular tachycardia
    
    
    
    
    • Torsades de pointes
    
    
    
    
  
  
  • Ventricular fibrillation
  
  
  • Sick sinus syndrome
  
  
  • Bundle branch block
    
    
    
    • Left bundle branch block
    
    
    • Right bundle branch block
    
    
    
    
  
  
  
  • Heart block
    
    
    
    • First degree AV block
    
    
    • Second degree AV block
    
    
    • Bifascicular block
    
    
    • Trifascicular block
    
    
    • Third degree AV block
      
      
      
      • Lev's disease
      
      
      
      
      
    
    
    
    
  
  
  
  


• Specific diseases of the electrical system of the heart
  
  
  
  • Brugada syndrome
  
  
  • Long QT syndrome
    
    
    
    • Andersen-Tawil syndrome
    
    
    • Romano-Ward syndrome
    
    
    • Jervell and Lange-Nielsen syndrome
    
    
    
    
    
  
  
  • Short QT syndrome
  
  
  • Wolff-Parkinson-White syndrome (WPW syndrome)
  
  
  
  

[edit] Inflammation and infection of the heart

• Endocarditis
  
  
  
  • Rheumatic heart disease
  
  
  
  


• Myocarditis


• Pericarditis

[edit] Congenital heart disease

• Atrial septal defect


• Ventricular septal defect


• Patent ductus arteriosus


• Bicuspid aortic valve


• Tetralogy of Fallot


• Transposition of the great vessels (TGV)


• Hypoplastic left heart syndrome

[edit] Diseases of blood vessels (Vascular diseases)

• Vasculitis


• Atherosclerosis


• Aneurysm


• Varicose veins



• Economy class syndrome


• Diseases of the aorta
  
  
  
  • Coarctation of the aorta
  
  
  • Aortic dissection
  
  
  • Aortic aneurysm
  
  
  
  


• Diseases of the carotid arteries
  
  
  
  • Carotid artery disease
  
  
  
  • Carotid artery dissection
  
  
  
  

[edit] Procedures done for coronary artery disease

• Percutaneous coronary intervention
  
  
  
  • Atherectomy
  
  
  
  • Angioplasty (PTCA)
  
  
  • Stenting
  
  
  
  


• Coronary artery bypass surgery (CABG)


• Enhanced external counterpulsation (EECP)

[edit] Devices used in cardiology

• Stethoscope


• Devices used to maintain normal electrical rhythm
  
  
  
  • Pacemaker
  
  
  • Defibrillator
    
    
    
    
    • Automated external defibrillator
    
    
    • Implantable cardioverter-defibrillator
    
    
    
    
  
  
  
  


• Devices used to maintain blood pressure
  
  
  
  • Artificial heart
  
  
  • Heart-lung machine
  
  
  • Intra-aortic balloon pump
  
  
  
  • Ventricular assist device
  
  
  
  

[edit] Diagnostic tests and procedures

• Blood tests


• Echocardiogram



• CMR


• Cardiac stress test


• Auscultation (Listening with the Stethoscope)

Electrocardiogram (ECG or EKG)

• 
  
  
  
  • QT interval
  
  
  • Osborn wave
  
  
  
  
  


• Ambulatory Holter monitor


• Electrophysiologic study
  
  
  
  • Programmed electrical stimulation
  
  
  
  


• Sphygmomanometer (Blood pressure cuff)


• Cardiac enzymes



• Coronary catheterization
  
  
  
  • Myocardial Fractional Flow Reserve (FFRmyo)
  
  
  • IVUS (IntraVascular UltraSound)
  
  
  
  

[edit] Cardiac pharmaceutical agents

The followings are medications commonly prescribed in cardiology:

• Antiarrhythmic agents
  
  
  
  • Type I (sodium channel blockers)
    
    
    
    • Type Ia
      
      
      
      
      • Quinidine
      
      
      
      
    
    
    • Type Ib
      
      
      
      • Lidocaine
      
      
      • Phenytoin
      
      
      
      
    
    
    • Type Ic
      
      
      
      • Propafenone
      
      
      
      
      
    
    
    
    
  
  
  • Type II (beta blockers)
    
    
    
    • Metoprolol
    
    
    
    
  
  
  • Type III (potassium channel blockers)
    
    
    
    
    • Amiodarone
    
    
    • Dofetilide
    
    
    • Sotalol
    
    
    
    
  
  
  • Type IV (slow calcium channel blockers)
    
    
    
    • Diltiazem
    
    
    • Verapamil
    
    
    
    
    
  
  
  • Type V
    
    
    
    • Adenosine
    
    
    • Digoxin
    
    
    
    
  
  
  
  


• ACE inhibitors
  
  
  
  • Captopril
  
  
  • Enalapril
  
  
  
  • Perindopril
  
  
  • Ramipril
  
  
  
  


• Angiotensin II receptor antagonists
  
  
  
  • Candesartan
  
  
  • Eprosartan
  
  
  • Irbesartan
  
  
  • Losartan
  
  
  
  • Telmisartan
  
  
  • Valsartan
  
  
  
  


• Beta blocker


• Calcium channel blocker

[edit] See also

• Interventional cardiology


• Clinical cardiac electrophysiology


• Heart Failure Society of America


• American Heart Association


• National Heart Foundation of Australia

[edit] External links

• Cardiology News


• European Society of Cardiology


• U.S. National Institute of Health (NIH) : Heart and Circulation


• American College of Cardiology


• Coronary heart disease


• Virtual Cardiac Centre - latest comprehensive information on the field of Cardiology.



• Cardiovascular Physiology - comprehensive explanation of basic concepts in cardiology.


• Preventive Cardiology


• A cardiac atlas using CMR images

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