The rate of intravenous Fosphenytoin sodium injection administration should not exceed 150 mg phenytoin sodium equivalents (PE) per minute because of the risk of severe hypotension and cardiac arrhythmias. Careful cardiac monitoring is needed during and after administering intravenous Fosphenytoin sodium injection.
Does scar tissue developed after heart attack can lead to heart failure? Yes: The area that is scarred does not work and help in the pumping and the heart gets weaker. The scarred tissue also impedes the contraction and makes the pumping even weaker, and it does not conduct electrical current like the normal muscles. The weaker heart, puts out less blood that goes in the heart, hence, the heart failure. ...Read more.
A blood clot can partly or fully block the flow of oxygen-rich blood to the portion of heart muscle fed by the artery. This causes a heart attack. During a heart attack, some heart muscle cells die and are replaced with scar tissue. The scar tissue damages the heart's electrical system.