4,200
edits
Clinical Disorders: Difference between revisions
Jump to navigation
Jump to search
m
→Digoxin
m (→Beta blockers) |
m (→Digoxin) |
||
| Line 8: | Line 8: | ||
===Digoxin=== | ===Digoxin=== | ||
[[Image:med_digitalis.png|thumb|300px|Typical for digoxin intoxication is the oddly shaped ST-depression]] | [[Image:med_digitalis.png|thumb|300px|Typical for digoxin intoxication is the oddly shaped ST-depression]] | ||
ECG changes typical for digoxin | ECG changes typical for digoxin '''use''' (digoxin = Lanoxin) are: | ||
*Oddly shaped ST-depression | *Oddly shaped ST-depression with 'scooped out' appearance of the ST segment (see figure) | ||
* | *Flat, negative or biphasic T wave | ||
*Short QT interval | *Short QT interval | ||
*Increased u-wave amplitude | *Increased u-wave amplitude | ||
*Prolonged PR-interval | *Prolonged PR-interval | ||
*Sinus bradycardia | |||
ECG changes typical for digoxin '''intoxication''' are: | |||
*Bradyarrhythmias: | *Bradyarrhythmias: | ||
**AV block. Including complete AV block and Wenkebach. | **AV block. Including complete AV block and Wenkebach. | ||
*Tachyarrhythmias: | *Tachyarrhythmias: | ||
| Line 24: | Line 25: | ||
Intoxication can lead to an SA-block or AV-block, sometimes in combination with tachycardia. '''NB''' these effects are increased by hypokalemia. In extreme high concentrations rhythm disturbances (''ventricular tachycardia, ventricular fibrillation, atrial fibrillation'') may develop. | Intoxication can lead to an SA-block or AV-block, sometimes in combination with tachycardia. '''NB''' these effects are increased by hypokalemia. In extreme high concentrations rhythm disturbances (''ventricular tachycardia, ventricular fibrillation, atrial fibrillation'') may develop. | ||
{{clr}} | {{clr}} | ||
===Antiarrhythmics=== | ===Antiarrhythmics=== | ||
* '''Anti-arrhythmics:''' These may lead to several ECG-changes; | * '''Anti-arrhythmics:''' These may lead to several ECG-changes; | ||