Mindblown: a blog about philosophy.
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Heart rate recovery
The decrease in heart rate that occurs one minute after maximal exercise. Normal people decrease their heart rates by at least 12 beats per minute (bpm) a minute after stopping maximal exercise. People whose heart rate does not decrease by 12 bpm have an increased risk of cardiac death.
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Right ventricular heart failure
Failure of the heart to maintain right ventricular output.
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Left ventricular heart failure
Failure of the heart to maintain left ventricular output.
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High output heart failure
Heart failure that occurs in spite of high cardiac output, for example, in severe anemia, thyrotoxicosis, arteriovenous fistulae, or other diseases.
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Forward heart failure
Heart failure in which forward flow of blood to the tissues is inadequate because the left ventricle is unable to pump blood with enough force to the systemic circulation (e.g., as a result of cardiomyopathy, muscular stunning, or infarction) or because outflow from the left ventricle is obstructed (e.g., in aortic stenosis).
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Backward heart failure
Heart failure in which blood congests the lungs, and often the right ventricle, liver, and lower extremities.
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Risk factors for ischemic heart disease
Conditions that predispose people to ischemic heart disease (coronary artery disease). These may be divided into those that are not reversible (aging, male gender, menopause, genetic factors) and those that are potentially reversible (tobacco use, hypertension, hyperlipidemia, diabetes mellitus, left ventricular hypertrophy, obesity, and sedentary lifestyle).
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Sinoatrial heart block
A partial or complete heart block characterized by interference in the passage of impulses from the sinoatrial node.
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Second-degree heart block
A form of atrioventricular block in which only some atrial impulses are conducted to the ventricles. Two variants exist: Mobitz I (Wenckebach) and Mobitz II. In Mobitz I, the P-R intervals become progressively longer until a QRS complex is dropped. Because of the dropped beats, the QRS complexes appear to be clustered (“grouped beating”) on…
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First-degree heart block
First-degree atrioventricular block.
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