Table 2.
Common genotypes, triggers and directed therapies
| Genetoype | Triggers | Genotype directed therapy |
|---|---|---|
| LQT1 | - exercise | -avoid competitive and exertional sports |
| - tachycardia from other causes | -high efficacy of beta blockers therapy | |
| LQT2 | - exercise | -remove clocks, telephones etc. from bed room |
| - auditory stimuli | ||
| -avoid sudden loud noises such as fire drills in school | ||
| -avoid competitive and exertional sports | ||
| -moderate efficacy of beta blocker therapy | ||
| LQT3 | - bradycardia | -strict restriction from sports may not be necessary |
| - rest/sleep | ||
| -beta blockers may not be efficacious | ||
| -consider adding flecainide or mexiletine | ||
| -consider ICD |