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lengthens Phase 2
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What happens to R-R interval after exercise?
During exercise an increase in heart rate corresponds to a shortening of the cardiac cycle (RR interval decreases). Most of this shortening occurs in the TP interval. The QT interval also shortens, but only slightly. then the interval shortens as the heart rate increases.
3 gal 2 qt - 2 gal 3 qt?
That's 18 qt less 7 qt ie 11 qt = 2 gal 3 qt
If you have a 5 qt pail and 3 qt pail how can you get exactly 4 qt of water?
Fill 5 qt pail. Then from full 5 qt fill 3 qt pail. You now have 2 qt left in 5 qt pail. Now empty 3 qt pail then put the 2qt from 5qt pail into this 3 qt pail. Now refill 5 qt pail Use this top off 3 qt till full this leaves you with 4 qts in 5 qt pail
70 qt equals gal qt?
17 gal 2 qt
4 qt - 2 qt 1pt equals?
5 qt 2pt
Why does hypocalcemia prolong the QT interval If calcium influx is compromised by hypocalcemia how is the isoelectric plateau phase maintained much less prolonged as manifested by the ECG?
more potassium
What would be a patients ecg show with Hypocalcemia?
The ECG of a patient with hypocalcemia will show q number of different distinct patterns. The ECG will show a T wave that is inverted and flattened, a prolongation of the QT interval, a narrowing of the QRS complex, a prolonged ST and ST depression, a reduction in the PR interval, and a prominent U wave.
What is average QT interval?
400
What effect does hypocalcemia have on the cardiac action potential?
It can prolong the cardiac action potential. It can also have other effects, such as torsades de pointes,and it can mask digitalis toxicity.
How do you calculcate QTcB interval on an ECG?
(QT/ RR^(1/3))*10
How do you calculate QTcF interval on an ECG?
(QT/ RR^(1/3))*10
How do you correct qt for heart rate?
Use the Bazett's formula; which is the pt's QT intervaldivided by the square root of the RR interval. QTc should be less than 440msecs.
Is the side effect of lasix is hypocalaemia or hypocalcemia?
Hypocalcemia
What happens to R-R interval after exercise?
During exercise an increase in heart rate corresponds to a shortening of the cardiac cycle (RR interval decreases). Most of this shortening occurs in the TP interval. The QT interval also shortens, but only slightly. then the interval shortens as the heart rate increases.
How is QT syndrome determined?
The QT of LQTS refers to an interval between two points (Q and T) on the common electrocardiogram (ECG, EKG) used to record the electrical activity of the heart.
Can Hypocalcemia cause depression?
Hypocalcemia can cause depression
What is the effect of fluoroquinolones on cardiac arrhythmia?
This drug (a broad spectrum antibiotic) can change the QT interval and that can cause arrhythmia.
