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.
Figure A shows a heart with dead heart muscle caused by a heart attack. Figure B is a cross-section of a coronary artery with plaque buildup and a blood clot. A less common cause of heart attack is a severe spasm (tightening) of a coronary artery. The spasm cuts off blood flow through the artery. Spasms can occur in coronary arteries that aren't affected by atherosclerosis.