The second category (ie, drugs addressing the reflex arc at ≥1 sites) includes β-adrenergic blockers, disopyramide, certain vasoconstrictors (eg, etilephrine, midodrine), serotonin reuptake inhibitors ...

The hung-up knee jerk is demonstrated when there is delayed relaxation of the quadriceps femoris after eliciting the patellar tendon reflex and can be seen in stiff-person syndrome as well as ...