Doctor insights on:
Does Cardioversion Correct An Abnormal Heart Rhythm Due To Prolonged Pr Interval
No: A pr interval represents the time of conduction from the time it originates in the sa node, depolarizes the atria causing contraction and reaches the av node. A cardioversion is a procedure to shock the heart back into a normal rhythm and does not correct intrinsic pathway defects. A pacemaker is used for that purpose when necessary, . ...Read moreSee 1 more doctor answer
Rhythm "any regular recurring motion, symmetry may be generally defined as a movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions, this general meaning of regular recurrence or pattern in time may be applied to a wide variety of cyclical natural phenomena having a periodicity or frequency of anything microseconds ...Read more
In general no: If the heart rhythm problem is any type of heart block (first degree av block, second degree av block, or complete heart block), cardioversion won't help. Having said that, certain types of cardiac rhythm problem (such as atrioventricular nodal reentrant tachycardia (avnrt)) can in rare cases look like a fast heart rhythm with a long pr interval. These a cardioversion could correct. ...Read more
What other measures may be successful in restoring the normal heart rhythm if cardioversion is not successful?
Highly effective: It "sets the clock back to zero" so to speak. It synchronizes all the electrically conducting cells in the heart to begin their cycle at the same instant. It interrupts and stops abnormal rhythms. It doesn't hurt and there are generally no side effects so in that regard, it's better than medicines. The downside is that one must be put to sleep, albeit briefly, for it. ...Read more
How does a phycisian decide which anti-arrhythmic drug is best for patients abnormal heart rhythm?
What are the chances i get qt prolongation or abnormal heart rhythm from taking Zofran (ondansetron) 4mg tabs for nausea?
Unlikely-but watch : Zofran (ondansetron) can cause qt prolongation which can produce dangerous cardiac arrhythmias and even sudden cardiac death. This would be unlikely at this dosing but should be watched for particularly if low potassium or calcium, or familial qtprolongation (such as in familial sudden cardiac death). Use of other drugs that prolong qt could result in higher likelihood of dangerous qt prolongation w zofran (ondansetron). ...Read more
Do I have an abnormal heart rhythm? I have been having irregular heart beats, whenever i stand up my heartbeat fastens. Is my heart normal?
Good question: When anyone stands up, their heart rate quickens - that part is normal. Regarding your irregular heart beat: the most important factor in determining if it's dangerous to you or not is whether or not your heart is normal. So your question is right at the "heart" of the matter! you need an evaluation with history, exam, ekg, echo, blood work, and possibly a stress test. ...Read moreSee 1 more doctor answer