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Effects of interventions on the LVOT gradient and murmur in patients with hypertrophic cardiomyopathy.
| Intervention | Gradient and cardiac murmur |
|---|---|
| Valsalva maneuver | Increase |
| Orthostatic position | Increase |
| Post extrasystole | Increase |
| Squatting position | Decrease |
| Handgrip maneuver | Decrease |
