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Doctor insights on: Prolonged Qt Interval On Ecg

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I was prescribed codeine and after taking it passed out and woke up & taken to hospital ecg showed prolonged qt interval. ECG has been fine 6 months on. Do I have an arrythmia or sensitive to codeine?

I was prescribed codeine and after taking it passed out and woke up & taken to hospital ecg showed prolonged qt interval. ECG has been fine 6 months on. Do I have an arrythmia or sensitive to codeine?

Codeine, maybe: Codeine lowers the threshold for mast cell release and, like morphine, some people are highly sensitive. A systemic reaction can occur similar to anaphylactic shock (although this is more of an idiopathic drug side effect than true allergy). Possible that long QT is unrelated. It is equally possible that codeine was unrelated to the event. This is just one possibility. ...Read more

Dr. Mark Ingerman
3 Doctors shared insights

Electrocardiogram (Definition)

Electrocardiogram (ecg, ekg) is a print-out of the electrical forces detected by electrodes on the chest wall, as electricity travels through the heart with each heart beat. The electrodes are placed in different positions, and each position "sees" the electrical activity of the heart from its own vantage point. Abnormalities in signal detected at chest surface ...Read more


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I took liquid codeine and tablets of codeine together for abdominal pain and I developed a prolonged qt interval on an ecg. Did this combo cause this?

I took liquid codeine and tablets of codeine together for abdominal pain and I developed a prolonged qt interval on an ecg. Did this combo cause this?

Unlikely but...: It is unlikely that Codeine alone would cause QT prolongation. Usually the other medications it is combined with are the culprit. Certainly this is concerning and may indicate you have QT prolongation as a baseline not previously identified. Get this checked out soon by a qualified health care provider. ...Read more

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2 days of chest pain /tightness. Insomnia had ecg in emerge only prolonged qt interval. Could be lung clot even after 2 days of having symptoms?

2 days of chest pain /tightness. Insomnia had ecg in emerge only prolonged qt interval. Could be lung clot even after 2 days of having symptoms?

More information plz: I think a bit more information is needed on your symptoms & how it came on before saying lung clot were HIGH on list. Of course, it MUST be thought of with your symptoms. But then, why are you not in ER getting ruled out? Perhaps, docs know you DON'T have PE? Write me at: www. Healthtap. Com/drsaghafi Use Key Code: PDXFNR to make calendar appointment. Otherwise, get seen while the sun's still out. ...Read more

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My mother ECG report showing prolonged qt interval 510. Is that something serious?

My mother ECG report showing prolonged qt interval 510. Is that something serious?

QT: Prolonged qt can be caused by genetics, electrolyte abnormalities and various drugs. It can be benign or can predispose to dangerous rhythm abnormalities. It would be advisable to consult your mother's doctor relative to what the meaning particular to your mother's situation is. ...Read more

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Recent ecg showed prolonged qt interval I have had Holter monitor and echo in past. Should I be concerned?

Recent ecg showed prolonged qt interval I have had Holter monitor and echo in past. Should I be concerned?

See a Cardiologist: An EKG showing a prolonged QT interval may be associated with a potentially dangerous heart rhythm known Torsades De Pointes. Medications, genetic causes both can be associated with a prolonged QT interval. Concerning historical features also would include a history of fainting or a family history of sudden death. Need more detailed workup with a cardiologist as well as an electrophysiologist ...Read more

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Here's what my dad ECG report says. SINUS RYTHM LEFT, ARIAL ABNORMALITY, LVH WITH REPOLARIZATION ABNORMALITY, PROLONGED QT INTERVAL. Please interpret?

Here's what my dad ECG report says. SINUS RYTHM LEFT, ARIAL ABNORMALITY, LVH WITH REPOLARIZATION ABNORMALITY, PROLONGED QT INTERVAL. Please interpret?

Must see: It's not possible to "interpret" an ECG without seeing it. These reports suggest the possibility that high blood pressure has effected the heart, making it thicker, but again I am only speaking in general terms having not looked at the ECG myself. ...Read more

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Prolonged Qt Interval? Should I be worried that my QTc was 608 with a pulse rate of 117? Doctor confirmed the ECG and I'm waiting for my appointment with the cardiologist. Thank you.

Prolonged Qt Interval? Should I be worried that my QTc was 608 with a pulse rate of 117? Doctor confirmed the ECG and I'm waiting for my appointment with the cardiologist. Thank you.

This is impossible: A heart rate of 117 BPM means one QRS complex every 512 msec. It is impossible to have a QT interval of 608 msec when the entire RR interval is 512 msec. You cannot have a QT that is longer than the RR. Something is not correct. Please upload your EKG to the system and request consultation for evaluation. ...Read more

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What does it mean that my EKG reads nonspecific t wave and prolonged qt interval?

EKG: Often the computer that prints the ekg's will type these comments on the top best to review it with either you regular physician or someone that reads them regularly, likely a cardiologist. Sometimes these are incorrect and in any case often not indicative of any disease. ...Read more

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An EKG showed a prolonged QT interval and it typed that I may be low in calcium. Blood work came back fine. He didn't seemed concerned, should I be?

An EKG showed a prolonged QT interval and it typed that I may be low in calcium. Blood work came back fine. He didn't seemed concerned, should I be?

Ask some questions.: A lot of EKG machines do automatic interpretations. I think they over read and report issues that aren't there or aren't significant. Prolonged QT can be a clinically significant finding but there are some ifs. It can be seen if you are on certain medications. It is a normal finding in certain percentage of the population. Clearly, you are concerned. Call your doctor and ask for clarification ...Read more

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My friend had an EKG done and his qt/qtc was 475/400. Does this mean he has prolonged qt interval? He's on seroquel (quetiapine)

My friend had an EKG done and his qt/qtc was 475/400. Does this mean he has prolonged qt interval? He's on seroquel (quetiapine)

Lots of drugs do: The qtc interval is prolonged by multiple commonly used drugs, and seroquel (quetiapine) is but one. The duration is not severe, and likely appropriate at this point, but certainly on the high normal side. Maybe need to monitor, but typically these items do not cause symptoms unless too many drugs affect the a/v nodal conduction. ...Read more

Dr. Alan Ali Dr. Ali
1 doctor agreed:
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Could a panic attack causing borderline prolonged qt interval?

Dr. Alan Ali Dr. Ali
1 doctor agreed:
Could a panic attack causing borderline prolonged qt interval?

Panic & QT: Not likely to affect the heart ventricles & cause prolonged q-t interval. Check with a cardiologist to better interpret the ekg findings. ...Read more

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I suffer from chronic hyperventilation at times. I read that this can cuase hypocalcemia and prolonged qt interval. Is this true? Is it dangerous?

Mildly: Hyperventilate, and you'll drop your ionized calcium (it's your body adjusting to keep you healthy) and change your ekg. The only danger to life is if you already have something badly wrong such as coronary artery atherosclerosis, or if you get worked up with invasive testing by an overzealous physician. Hope you're able to get the hyperventilation under control -- be brave & good luck. ...Read more

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I'm on methadone, I have prolonged qt interval, so have to come off. I've heard the tapering off is so difficult, true?

not impossible: You certainly don't want to remain on Methadone if you have prolonged qt. Risk of sudden cardiac death is real, especially at higher doses. If tapering becomes intolerable, work with an addiction specialist to help you through the process and possibly transition you to another safer agonist based replacement therapy. ...Read more

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I've been on my period for 15 days. What does this mean. I have a prolonged qt interval aswell?

I've been on my period for 15 days. What does this mean. I have a prolonged qt interval aswell?

Not normal: 15 days of bleeding isn't normal and should be evaluated by a gynecologist. There are many options for menstrual cycle control. QT syndrome should be evaluated by a cardiologist ...Read more

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Is Macrobid (antibiotic) safe or unsafe for people with a pre-existing prolonged QT interval? Will it prolong QT even more?

Safe in Long QT: Always tell prescribing doc about anything & everything you're taking, including dietary supplements. Also tell him/her about conditions that might affect medication choice eg allergies & abnormal heart conditions eg Family History of sudden cardiac death. Check out http://www. Sads. Org. Uk/drugs_to_avoid. Htm for list of medications to avoid in long QT syndrome. ...Read more

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Should I be tested for hypomagnesemia? I took prilosec for over a year and I heard it can cause this with prolonged qt interval. My legs feel sore also

Should I be tested for hypomagnesemia? I took prilosec for over a year and I heard it can cause this with prolonged qt interval. My legs feel sore also

Yes: If having muscle aches, it sometimes can be a sign of imbalance such as potassium& magnesium but not necessarily related to prilosec. A comprehensive metabolic panel (CMP) lab test is sufficient with adding a magnesium level. A prolonged qt interval is an abnormality on egg caused by many things. If someone has a low magnesium it can prolong the qt. Prilosec can do this but less likely. ...Read more

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In general, do you prefer Zoloft or Lexapro (escitalopram) for GAD, panic, agoraphobia? I of course worry about side effects - prolonged qt interval - read too much!

In general, do you prefer Zoloft or Lexapro (escitalopram) for GAD, panic, agoraphobia? I of course worry about side effects - prolonged qt interval - read too much!

GAD and medication: Please do what your doc asks but consider adding a behavioral approach to address the root of the situation such as clinical hypnosis, biofeedback, psychotherapy. See www. Asch. Net for licensed providers who do clinical hypnosis and www. Relaxationresponse. Org for some self-help. Peace and good health. ...Read more

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An ECG showed I have slightly long QT interval. What does this mean? And can I still dance as normal?

It is most likely: Not an accurate interpretation of the EKG especially if it is a computer interpretation. Long QT can be a very serious issue. Certain forms of long QT can trigger life threatening issues with exercise (dancing.) I think you should take the EKG to a qualified health care professional for evaluation so you can be reassured. ...Read more

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One ECG (out of 5) showed long qt intervals. Does this mean I have lqt syndrome? R/o hypocalcemia.

One ECG (out of 5) showed long qt intervals. Does this mean I have lqt syndrome? R/o hypocalcemia.

No.: Lots of reasons to have "long appearing qt" interval. Probably most common is inaccuracy of the machine in measuring the qt. Please have this verified by a human.

If verified, start looking at your meds. Medications are a common cause of real qt prolongation. If not meds, consider referral to cardiology to eval for lqt syndrome. ...Read more

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Is Advil (ibuprofen) safe to take if I have a prolonged QT interval? How much is safe daily?

Is Advil (ibuprofen) safe to take if I have a prolonged QT interval? How much is safe daily?

Ibuprofen: It usually does not cause QT prolongation and maximum dose varies with individual but for average 70 kg person up to 2400 mg would be okay in a day if you don't have other medical problems. ...Read more

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My dr. Prescribed vistaril for anxiety. But he knows I'm already on zoloft, (sertraline) which can prolong qt interval too. Why would he do this?

My dr. Prescribed vistaril for anxiety. But he knows I'm already on zoloft, (sertraline) which can prolong qt interval too. Why would he do this?

No interaction: Hydroxyzine and sertraline don't interact, can be taken together, different mechanisms of action. Sertraline doesn't cause QT prolongation, hydroxyzine may affect it, but no risk of QT prolongation if taken together, wish you wellness ...Read more

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What can cause prolonged qt and abnormal ecg?

What can cause prolonged qt and abnormal ecg?

Qt: Qt interval is a measure of electrical repolarization in the heart. Medications can cause prolongation as well as slower heart rates. Get evaluated. ...Read more

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I've had prolonged qt once lst yr since then I've had ecgs, echos, s. test which came back normal. Should I be worried my dr says it mybe electrolytes?

I've had prolonged qt once lst yr since then I've had ecgs, echos, s. test which came back normal. Should I be worried my dr says it mybe electrolytes?

Electrolytes or medications: Hello, that is correct, changes in your electrolytes, and using certain medications, can prolong your QT interval. If the interval stays the same, or improves on repeated EKGs. You do not have to worry. ...Read more

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I had an ECG, exercise stress ECG, 48-hr holter ECG, and an echo. Would prolonged QT show up on all of those tests?

I had an ECG, exercise stress ECG, 48-hr holter ECG, and an echo. Would prolonged QT show up on all of those tests?

Majority: Yes, if you are concerned for prolonged QT or there is a family history, all of those tests except for an echo should show prolonged QT syndrome. An echo measures the function of the heart. Prolonged QT is calculated from an ECG looking at the part of the heart that makes up the QT interval in the heart beat. An ECG, stress ECG and Holter ECG should be able to pick it up. ...Read more

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Been experiencing palpitations and elevated hr. I'm an athlete. Ecg usually norm but one just came back w prolonged qt? QT/QTc 404/480? hr85

Been experiencing palpitations and elevated hr. I'm an athlete. Ecg usually norm but one just came back w prolonged qt? QT/QTc 404/480? hr85

Further evaluation: Having palpitations certainly needs further evaluation with possibly a 24 hr Holter monitor. This will help evaluate if your heart rate is elevated (average HR in a 24 hour period) and also if your QTc varies over the 24 hr period. Knowing family history is also important.
Seeing a cardiologist or a cardiac electrophysiologist should be your next step.
Good luck. ...Read more

Dr. Warren Foster
132 Doctors shared insights

Long Qt Syndrome (Definition)

A heart-rhythm condition that can potentially cause fast, chaotic heartbeats. These rapid heartbeats might trigger a sudden fainting spell or seizure. In some cases, the heart can beat erratically for so long that ...Read more