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Stress testing is one of the most widely used tools in cardiology. It provides diagnostic and prognostic information in patients with suspected or known coronary heart disease, and is a useful tool for assessing the…

Coronary heart disease, or atherosclerotic coronary artery disease, is the commonest cause of cardiovascular disability and death in the United States. Men are more often affected than women by an overall ratio of 4:1,…

Congenital lesions account for only about 2% of heart disease that presents in adulthood. Only the most common acyanotic lesions are discussed here. The review articles cited below provide further discussion of the major…

While most cases of valvular disease in the United States were at one time due to rheumatic heart disease (still true in developing countries), other causes are now more common. The typical findings of…

The chest x-ray provides information about heart size, the pulmonary circulation (with characteristic signs suggesting both pulmonary artery or pulmonary venous hypertension), primary pulmonary disease, and aortic abnormalities. The echocardiogram provides much more reliable information…

By Barry M. Massie, MD, & Thomas M. Amidon, MD

The electrocardiogram (ECG) is a visual representation of the electrical impulses generated by the heart with each beat. Ever since Willem Einthoven developed the ECG in the early 1900s, it has become an invaluable tool…

A thorough physical examination can provide clues to the presence and severity of cardiovascular disease, and alert one to the presence of life-threatening conditions even before the results of any diagnostic…

Palpitations are the subjective awareness of the heart beating and are usually the result of a change in heart rate, heart rhythm, or the force of cardiac contraction.

Etiologies

A wide variety of disorders can…

Dyspnea is an uncomfortable awareness of breathing. It is a common symptom of cardiac and pulmonary diseases, and may also result from neurological conditions, chest wall problems, and anxiety states.

Differential Diagnosis of dyspnea (see…

History and Physical Examination
Despite major innovations in diagnostic technology and advances in medical therapy, a well-performed history and physical examination remain the cornerstone of good patient care. In addition to providing important clues…

Alveolar-arterial gradient = [(P_atm - P_H2O)(FIO₂) - (PCO₂/0.8)] - P_a02

Blood pressure = CO x SVR

CO = SV x HR (units: 1/min)

Chest Pain

• Angina
• Myocardial infarction
• Aortic dissection
• Pericarditis
• Pulmonary embolism
• Pneumonia
• Pleurisy
• Pneumothorax
• Pulmonary hypertension
• Gastroesophageal reflux disease
• Esophageal spasm
• Costochondritis
• Rib fracture
• Anxiety

A₂: aortic component of the second heart sound
ABE: acute bacterial endocarditis
ABI: ankle-brachial index
ACS: acute coronary syndrome
ACE: angiotensin-converting enzyme
AF: atrial…

According to researchers a new heart failure drug designed especially for blacks could reduce the amount it costs to treat the disease by as much as 34 percent.

Research in monkeys suggests that the perimenopause - the five to 10 years before a woman’s menopause - is a critical time for preventing heart disease and osteoporosis.

“Research…

Mayo Clinic researchers have found that - contrary to current thinking by some in the medical community - a patent foramen ovale (PFO), a small hole between…

Nearly two-thirds of heart attack patients said they feared a second heart attack, more so than dying, but more than a third spurned some basic lifestyle preventive measures, according to…

Micronutrient supplementation improves heart function and quality-of-life in elderly patients with chronic heart failure, according to a report from investigators in Germany and the UK.

“The vitamin story has been confused…

“While our research reaffirmed the risk of stroke among patients with heart disease, the surprise was that the risk was so high in the month after a heart attack,”…

A small but compelling pilot study indicates that many children with serious congenital heart disease, who are typically urged to restrict their activity, can improve their cardiovascular function and exercise…

Americans’ odds of surviving a heart attack seem to partially depend on which state they live in, according to researchers.

Their study of hospital data from 11 states…

Giving people advice about healthy eating, even in small doses, appears to produce changes in diet that lead to modest improvements in some cardiovascular risk factors, according…

Virginia Commonwealth University researchers have found that changes in the plasma lipoprotein profile of patients with severe periodontitis – a condition characterized by chronic infection and inflammation of the gums…

The presence of depressive symptoms when patients are hospitalized for a heart attack seems to reduce survival in the next 5 years, Canadian researchers report. However, a long-standing history of…