<prompt> Hypocalcemia is characterized by all EXCEPT:Numbness and tingling of circumoral regionHyperactive tendon reflexes and positive Chvosteks signShoening of Q-T interval in ECGCarpopedal spasm  <response>: Plasma Ca stabilizes membrane potentials. Hence, hypocalcemia may lead to various manifestations of increased membrane excitability. For nerve and muscles, their threshold comes closer to RMP. Spontaneous APs are fired in the nerves. The hyperirritability of the motor nerves and the innervated muscles leads to the symptoms of tetany. Carpopedal spasm: may occur spontaneously or by inflation of BP cuff applied to arm - Trousseaus sign. Tapping of facial nerve over the angle of mandible causes unilateral spasm of facial muscles - Chvosteks sign. Laryngeal stridor or laryngeal spasm. Death may occur from asphyxia. Tendon reflexes - hyperactive. ECG changes: Prolongation of the ST segment and consequently QT interval. Reason: Low serum Ca decreases K permeability, lengthens phase 2 plateau of the AP, and slows the rate of repolarization, thereby prolonging the Q-T interval. Thus, option C is an incorrect statement, hence the answer. There is tingling and numbness of the extremities; in the circumoral region it may be a rare manifestation. 