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5 days ago · People who have had rheumatic fever (PDF) or infective endocarditis are at greater risk for heart valve problems. Heart problems such as heart attack, heart failure, arrhythmia or previous heart valve conditions from birth ( congenital heart defects) also can increase the chance for developing valve problems.
5 days ago · arrhythmia: 1 n an abnormal rate of muscle contractions in the heart Synonyms: cardiac arrhythmia Types: show 8 types... hide 8 types... flutter abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block cantering rhythm , gallop rhythm cardiac rhythm characterized by the presence of an ...
5 days ago · Some physical signs of heart valve disease can include: Chest pain or palpitations (rapid rhythms or skips) Shortness of breath, difficulty catching your breath, fatigue, weakness, or inability to maintain regular activity level. Lightheadedness or fainting. Swollen ankles, feet or abdomen.
1 day ago · The United States of America ( USA or U.S.A. ), commonly known as the United States ( US or U.S.) or America, is a country primarily located in North America. It is a federation of 50 states, a federal capital district ( Washington, D.C. ), and 326 Indian reservations. [j] Outside the union of states, it asserts sovereignty over five major unincorporated island territories and various ...
1 day ago · Frankfurt am Main ( / ˈfræŋkfərt /; German: [ˈfʁaŋkfʊʁt ʔam ˈmaɪn] ⓘ; [5] [6] lit. " Frank ford on the [a] Main ") is the most populous city in the German state of Hesse. Its 773,068 inhabitants as of 2022 make it the fifth-most populous city in Germany, [b] and it is the only city in the country rated as an "alpha world city ...
5 days ago · Would you recognize the symptoms of worsening heart valve disease? When heart valve problems are severe, there are often no recognizable symptoms until heart damage has progressed significantly.
6 days ago · As an action potential (nerve impulse) travels down an axon there is a change in electric polarity across the membrane of the axon. In response to a signal from another neuron, sodium- (Na +) and potassium- (K + )–gated ion channels open and close as the membrane reaches its threshold potential. Na + channels open at the beginning of the ...
