Please do not hesitate to contact Dr. Matthews regarding any heart problems or symptoms, which you desire to discuss. He will gladly answer as promptly as possible!

Anatomy of the Heart
Angina Pectoris

Aortic Aneurysm

Athlete's Heart

AtrioVentricular (AV)-Conduction Disturbances

Atrial Fibrillation
Autonomic Nervous System

Blood Supply of the Cardiac Conduction System

Bradycardia Evaluation
Bradycardia Managment

Bypass Surgery
Cardiac Conduction System
Congestive Heart Failure

Congenital Heart Disease in Adults

Coronary Arteries
Doppler Echocardiogram
Electrocardiogram (EKG)
Flail Valve
Fetal Echocardiography
Intravascular Ultrasound
Lipid Plaque
Magnetic Resonance Imaging (MRI)
Mitral Valve
Myocardial Infarction
Mitral Valvuloplasty
Normal Heart Rate
Nuclear Stress Test
Open Heart Surgery
Pericardial Constriction
Pericardial Effusion
Pulmonic Valve
Rhumatic Fever
Sick Sinus Syndrome
Supraventricular Tachyarrhythmias
24 Hour EKG Holter Test
Tricuspid Valve
Ventricular Fibrillation
Ventricular Tachycardia

Cardiology is that branch of medicine which deals with the diagnosis and treatment of heart diseases. Cardiologists investigate patients with suspected heart disease by taking a very careful, extensive history of the patient's condition, and performing a complete physical examination.

Consult this site on the regular basis, as it will be progresively updated with information of interest to you.

See Flash animations for the following:

   1. Normal atrioventricular cardiac conduction

   2. Abnormal cardiac conduction in Atrial Fibrillation

   3. Mechanism of perpetuation of Atrial Fibrillation through continuous number
of multiple abnormal wavelets

  4. The radiofrequency ablation of the above abnornmal pulmonary vein elecrical
potential focus causing atrial fillibration
5. Left lateral accesory pathway

1. PSVT due to AV Nodal Rentry
2. Paroxysmal Supraventricular Tachycardia
3a. Wolff-Parkinson-White Syndrome
3b. Ablation Therapy, Arrhythmia
4. Atrial Tachycardia Induced By Digitalis
5a. Atrial Flutte, Saw Tooth Pattern
5b. Atrial Flutte, Carotid Sinus Massage
6. Normal Blood Flow Pattern
7. Sustained Ventricular Tachycardia, (VT)
8. Sustained VT
9a. Sustained VT
9b. Sustained VT
10. Monomorphic VT
11. Polymorphic V, Ablation
11a. Ablation Atrial Fibrillation(AF)
11b. Ablation AF
11c. Ostial Ablation, Pulmonary Veins(PV)
11e. Ablation, A ,R.S.PV.Focus
11f. Ablation, Atrial Flutter, C.Sinus Area
11g. Sites Foci Triggering AF
11h. Onset A, Foci, RI, LS, PV's
12. VT, Implantable Cardiac Defibrillator
13. Torsades de Pointes VT
14. Atrial Fibrillation, Aberant Conduction
15a. Fine Atrial Fibrillation
15b. Atrial Fibrillation, wide QRS
16. ECG Sinus-Node Dysfunction
17. ECG Atrioventricular-Conduction Disturbances18. Schematic ECG (94)
19. ECG, Premature Atrial Contraction
20a. Mitral Valve (MV)
20b. Normal MV
20c. MV Flail Posterior Leaflet
21. Flail Mitral Valve
22. Patent Ductus Arteriosus
23a. Coarctation of Aorta
23b. Echo, X'ray Coarctation Aorta
23c. Bicuspid Aortic Valve
23d. Tetralogy Fallot
23e. Ebstein Anomaly
23f. Atrial Switch Operation
23g. Atrial Baffle Surgery
23h. Transposition Great Arteries
23i. Transposition Switch Surgery
23j. Eisenmenger Syndrome
24a. Types Aortic Stenosis
24b. ECG Aortic Stenosis
24c. Differences, Heart Chambers
25a. Angiogram Pulmonary Stenosis
25b. Illustration Pulmonary Stenosis
26. Normal Pulmonary Valve
27. Fibrinous Pericardial Effusion
28. Autonomic Nervous System
29. Origin Major Coronary Arteries
30. Blood Supply Interventricular Septum
31. Blood Supply Cardic Conduction
32a. Drawing M-mode Echocardiogram(ECHO)
32b. M-mode ECHO record
32c. Drawing Various Planes ECHO
32d. Parasternal Long-Axis ECHO Drawing
33. Parasternal Long-Axis Views ECHO
34a. Parasternal Short-Axis Views ECHO
34b. Systolic, Diastolic Views ECHO
35a. Apical Views ECHO(2D)
35b. Subcostal Views ECHO(2D)
35c. Ecg Acute Pericarditis
36a. 2D ECHO Cardiac Tamponade
36b. M-mode ECHO Pericardial Effusion
37. Pericardial Constriction
38a. Pericardial Constriction, Chest X'ray
38b. Pericardial Constriction, CAT
38c. Pericardial Constriction, Biopsy
38d. Pericardial Constriction, Special Stains
38e. Pericardial Constriction, MRI
39a. Hypertrophic Cardiomyopathy, Anatomical, X'ray
39b. Hypertrophic Cardiomyopathy, IV Septum Enlarged
39c. Hypertrophic Cardiomyopathy, Abnormal Collagen
39d. Hypertrophic Cardiomyopathy, Abnormal Collagen
39f. Hypertrophic Cardiomyopathy, Myocardial Infarction(MI)
39g. Hypertrophic Cardiomyopathy(HCM), MI, Microscopic
40a. Onset Left Ventricular Hypertrophy, HCM
40b. Morphology HCM
40c. Valve Abnormalities, HCM
40d. Abnormal MV Motion, HCM
40e. Abnormal Doppler Tracing, HCM
40f. Abnormal Echo, HCM
43a. Amyloid Heart Disease
43b. Dilated Cardiomyopathy
44a. Moderate Mitral Stenosis
44b. Mitral Stenosis Viewed Left Ventricle
44c. Phonocardiogram, Echo, Mitral Stenosis
44d. Chest XR, MS, Pulmonary Hypertension
44e. Pressure Records, MS
45. Echo Mitral Valve Prolapse, MPV
46a. Echo, Calcific Aortic Stenosis, AS
46b. Fibrous AS
46c. Echo, AS, Bicuspid Aortic Valve
46d. Catheter Aortic Valve Area, AV
46d. Doppler Aortic Valve Area
47. Echo, AS, Bicuspid Aortic Valve
48a. Echo Aortic Valve Vegetation
48b. Chronic Rheumatic Aortic Insufficiency
48c. Bacterial Endocarditis, AV
48d. Aortitis, AV
48e. Transesophageal Echo Vegetation, AV
48f. Septic Thromboembolism Coronary Artery
49. Echo, Prosthetic MV
50. Echo Type 1 Aortic Dissection
51a. Echo, Anterior Myocardial Infarction
51b. Sites Aneurysms Aorta
51c. Surgical Class Dissecting Aneurysms
51d. Dissecting Aortic Aneurysm, Hematoma
51e. Type I Aortic Dissection, CXR
51f. Serial Frames Aortogram, 51e
51g. TEE Aortic Dissection
52. Left Coronary Arteriogram
53. Coronary Arteriogram, Andreas Gruentzig
54. Angioplasty, Stenosis, LAD, Diagonal
55. Angioplasty, LAD, Diagonal
56a. Directional Atherectomy, RCA
56b. Angioplasty, Dilatation Catheter
56c. Atherectomy Catheter
59. TEE Right Atrial Myxoma
60. Angiogram, Atrial Myxoma
61. Defibrillator, Ventricular Fibrillation, HCM
62. Cardioverter-Defibrillator,V.F.,Long QT
65. Dipyridamole Stress Test,SPECT
66. Ultrasound Arteriosclerotic Plaque
67. Angiogram,Emergent Angioplasty
68. Doppler Velocities, LAD,C.Artery
69. Mitral Regurgitation, Mitral Percutaneous Mitral Valvulopasty
70. Acute Myocardial Infarction Mechanisms
72b. TEE, Tumor, Right Ventricle(RV)
73a. ECHO, Amyloidosis, Heart
73b. ECHO,Amyloidosis, LV Hypertrophy
74a. Doppler, Mitral,Pulmonary Flow, Amyloidosis
74b. CXR, Cardiomegaly, Amyloidosis
74c. Myocardial Stain, Amyloidosis
74d. Myocardial Stain, Amyloidosis
77b. Amyloid Replacement Myocardium
77c. RV Pressure Tracing, Amyloidosis
77d. RV Pressure Tracing, Amyloidosis
77e. RV Pressure Tracing, Amyloidosis
78a. Left Atrial Myxomas
78b. TEE,Left Atrial Myxoma,LV
79. Angiogram, Myxoma, Arterial Supply
80. TEE, RV,Myxoma
81a. LA Myx oma ,Angiogram,MRI
81b. TEE LA Angiosarcoma
82. Coronary Artery Dissection
83a. Stents, Coronary Arteries
83b. Stents, Coronary Arteries
84a. Movie, Cardiac Conduction Wave
84b. Pacing Leads Sites, CXR
85. ECGs, Bipolar,Unipolar Pacing
86. Three Modes Ventricular Pacing
87. ECG,Atrial Pacing
88. ECG Dual-Chamber Pacing
89. Normal Ventricular Inhibited Pacing
90. Pacing Electrode (Medtronic)
91. Titanium Pacing Electrode
92a. Active Fixation Lead.Electrode
92b. External Transthoracic Pacing
92c. VT Treated With Pacing
93. ECG, Asymptomatic Bradycardia
94. Diagram Normal ECG
94-1. Determination ECG Electrical Axis
94-2. Acute Inferior Myocardial Infarction
94-3. Normal Variant ST Elevation
94-4. ECG Ischemia
94-5. Tachycardia-dependent LBBB
94-6. Reciprocal ST Changes
94-7. Non-Q Wave Infarction(MI)
94-8. Acute Inferior MI,RV MI
94-9. Left Anterior Fascicular Block(LAFB)
94-10. Frontal Plane QRS, LAFB
94-11. Postsurgical LAFB, Right Bundle Branch Block (RBBB)
94-12. LAFB, RBBB
94-14. PAC's With Increasing Left Posterior Fascicular Block(LPFB)
94-15. LPFB, RBBB
94-16. LPFB, LAFB,Acute MI
94-17. Wenckebach In RBB
94-18. LBBB, AS MI,ECG
94-19. LBBB, Acute Inferior MI
94-20. WPW, Left Assessory Pathway
94-21. WPW, Posteroseptal Assessory Pathway
94-22. WPW, Rightl Assessory Pathway
94-23. WPW, Right Anteroseptal Pathway
94-24. QRS's, Different Pacing Sites
94-25a. ECG, Pulmonary Emphysema
94-25b. ECG, RVEnlargement,AtrialSeptal Defect
94-26. ECG, RV Enlargement(RVH), Mitral Stenosis
94-27. ECG, Pulmonary Stenosis, RVH
94-28a. ECG, Hyperkalemia
94-28b. ECG, Hyperkalemia
94-28c. ECG, Hyperkalemia, Arrhythmias
94-28d. Hyperkalemia Simulating Acute MI
94-29a. ECG, Hypokalemia
94-29b. ECG, Hypokalemia
94-30a. ECG, Hypokalemia
94-30b. ECG, Hypercalcemia, Hypocalcemia
94-31. ECG, Hyperthermia
94-32. ECG, RBBB, ST Elevation, V1-V3
94-33. ECG, Brugada Syndrome
94-34. ECG, Polymorphic Ventricular Tachycardia
95a. Various Cardiac Stents
95b. Angiograms, Stents, Before/After
95c. Metal Stent Coated Rapamycin
95d. Intimal Hyperplasia, Rapamycin Treatment
95e. Followup Results After Rapamycin
96a. 24 hr ECG Holter Report
96b. ECG, Holter Report
102. Example of 24 hr Holter
103. Normal Pulmonary Valve(PV)
104a. Sketch PV,X-Section,Heart
104b. X-Section, Heart, PV
104c. Diagram Origin Coronary Arteries
104d. Blood Supply, IVS
104e. Diagram Vessels, Heart
104f. Myocardial Perfusion Coronary Arteries
104g. Blood Supply, Cardiac Conduction
104h. Blood Supply, IVS
104-i. Tomography, Heart, Echo
105a. Morphology, Four Chambers, Heart
105b. Mitrial, Tricupsid Valves
105c. Model, Normal Mitral Valve
105d. Morphology Tricupsid Valve
106a. Morphology Mitral Valve
106b. Movie, Heart Blood Flow
107. Types of Prosthetic Heart Valve
108. Sequence Percutaneous Mitral Valvotomy
109. Echo, Mitral Regurgitation
111. Echo Aortic Regurgitation
112a. Picture Atrial Septal Defect (ASD)
112b. Doppler Echo ASD
112c. Picture Ventricular Septal Defect (VSD)
114. Picture Mitral Regurgitation
115. Picture Myxomatous Mitral Valve
116. Myxomatous Mitral Valve Rupture (MV)
118. TEE Posterior Ruptured MV Leaflet
120a. TEE,Cardiac Sarcoma,MV
120b. Cardiac Sarcoma, MV, microscopy
121a. Illustration, Bypass G rafts
121b. Sequencing Coronary GraftS
122a. BP Graph
122b. BP Technique
123a. BP Classification
123b. Prevalence Systolic Hypertension
123c. Risk Stroke, Heart Disease, Hypertension
123d. Indication Hypertension Treatment
123e. 24Hr. Holter Ambulatory BP
123. Coronary Perfusion Areas,MRI
124. MRI,Reversible, Ireveversible LV Dysfunction
124a. Capotril Renography
125. Refer to 124
126. ECHO,Histology,Dilated HCm
140. Angiogram Renal Artery Stenosis(RAS)
141. RAS, Hypertension, Chronic Renal Failure
142. Progressive Atherosclerosis, RAS Ischemic Nephropathy
143. Signal Averaged ECG (SAECG)
144. SAECG, temporal
145. TEE Probe
146. TEE LA Appendage Thrombus
147. TEE LA Appendage,PRE,POST,Cardioversion
148. TEE Pitfalls LA Appendage
149. Sites, Transvenous Leads, Cardiac Pacing
150. View 2 Leads, CS, Pace LV
151a. LVDysfunction, Activation Baroreceptors
151b. Reduction LV- Plasty
152. Intra-Aortic Balloon
153. Permanent Implantable Balloon Pump
154. TOTAL Artificial Heart
155. Cardic T ransplant
156. Color Cardic T ransplant
159. Movie, Mechanisms, Atrial Fibrillation
160. Movie, Maintenance AF,Circulets ,Excitation