Question 1

is a qtc of 47 concerning?

Accepted Answer

: A QTc of 47 is impossible. Presumably you mean either 0.47 seconds or 470 miliseconds which is at the high end of the normal range for females. However it's not possible to make a meaningful assessment of the heart with a isolated QTc out of context. It shoul;d  only be considered as part of the entire EKG with knowledge of the medical history and medications taken.

Question 2

qtc interval 483. is this serious?

Accepted Answer

Normal: Your QTc is on the upper end of normal range, &lt; 500 ms. The QT or QTc changes based on your heart rate and other factors. Some medications can make the QT longer (some antibiotics, some psychiatric medications, some heart medications, as well as others) so it is important that you talk to your doctor about it to make sure you don't take any of these. Also discuss family history of heart attacks.

Question 3

increase in qtc interval, what does this indicate?

Accepted Answer

Increased QTc: The QT interval represents the time it takes for the electricity to pass through the bottom two heart chambers.  Normally, the QT shortens with a faster heart rate; therefore, a corrected QT (QTc) is calculated, more accurately representing the expected QT.  Normal QTc is

Question 4

if qtc is 500, (70+ female) what are the implications?

Accepted Answer

: While women tend to have a longer QTc interval than men, a value of 500 is abnormal. If it is not explainable by medication effect (quinidine, quinolone antibiotics,other antibiotics, antifungals, etc) it can imply some structural abnormalities of the heart. A cardiologist is best to evaluate and advise you.

Question 5

my qtc interval is usually around 400ms-420ms is this normal for a male? should it not be lower?

Accepted Answer

Qt interval: The majority of people have a QTc around 380 and 440 msg

Question 6

my qtc is always around 405-415ms as a 30 year old male shouldnt it be always under 400 and in the 300s?

Accepted Answer

: no.  Your corrected QT is normal if it is less that 440 for sure.  It can vary through the day and evening

Question 7

what determines a long qt?

Accepted Answer

A formula: Long qt is determined by taking a measurement from an ekg and applying a simple formula to correct for the heart rate. Certain drugs and inherited conditions can cause this interval to prolong. When the interval is particularly long (greater than 500 ms), it can, under the right circumstances, put a patient at risk of having a serious heart rhythm problem.

Question 8

what is a normal qt interval?

Accepted Answer

Increased QTc: The QT interval represents the time it takes for the electricity to pass through the bottom two heart chambers.  Normally, the QT shortens with a faster heart rate; therefore, a corrected QT (QTc) is calculated, more accurately representing the expected QT.

Question 9

is qtc more important than qt?

Accepted Answer

Yes: Within normal range of heart rate, they are close but the corrected qt would be more useful. Changes in qt interval are also important to follow.

Question 10

can a person who has long qt die suddenly?

Accepted Answer

Yes: Long qt syndrome is one of the main causes of sudden unexpected death in  childhood with otherwise normal heart.

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Doctor answers about:

Qtmb

A member asked:

Is a qtc of 47 concerning?

A member asked:

Qtc interval 483. is this serious?

A member asked:

Increase in qtc interval, what does this indicate?

A member asked:

If qtc is 500, (70+ female) what are the implications?

A member asked:

My qtc interval is usually around 400ms-420ms is this normal for a male? should it not be lower?

A member asked:

My qtc is always around 405-415ms as a 30 year old male shouldnt it be always under 400 and in the 300s?

A member asked:

What determines a long qt?

A member asked:

What is a normal qt interval?

A member asked:

Is qtc more important than qt?

A member asked:

Can a person who has long qt die suddenly?

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