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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Long QT Syndrome?

I have had ekg that indicated that I had Prolong QT Syndrome. Now the doctors have being telling my family for years that we have Prolong QT but I just had a gene test done and it came back negative for Prolong QT. I would like to know what else it could be.
Fri, 23 Feb 2018
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General & Family Physician,  's  Response
Hello. Thank you for trusting HealthcareMagic with your concerns.

Prolonged QT has a number of causes:
1.Drugs-there are many drugs out in the market that may cause a prolong QT in susceptible patients. Some drugs include-Loratidine, diphenhydramine; some antibiotics like Erythromycin; antidepressant drugs like-amytriptylin, imipramine, citalopram, bupropion; cardiac medications like-quinidine, amiodarone, sotalol, and flecanide.
2.Metabolic abnormalities
a. low calcium
b. low potassium
c. low magnesium
3. Heart attack
4. Raised intracranial pressure.

I hope I was able to answer your question. Please let me know if you have any further concerns.
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What Causes Long QT Syndrome?

Hello. Thank you for trusting HealthcareMagic with your concerns. Prolonged QT has a number of causes: 1.Drugs-there are many drugs out in the market that may cause a prolong QT in susceptible patients. Some drugs include-Loratidine, diphenhydramine; some antibiotics like Erythromycin; antidepressant drugs like-amytriptylin, imipramine, citalopram, bupropion; cardiac medications like-quinidine, amiodarone, sotalol, and flecanide. 2.Metabolic abnormalities a. low calcium b. low potassium c. low magnesium 3. Heart attack 4. Raised intracranial pressure. I hope I was able to answer your question. Please let me know if you have any further concerns.