Hemorrhagic and obstructive shock in pediatric patients.

Shock in childhood is most commonly related to injury and blood loss, but hemodynamic compromise is occasionally caused by severe head or spinal injury, tension pneumothorax, myocardial injury, arrhythmias, and sepsis. Regardless of the cause, the initial management of the hypertensive child is establishment of a secure airway, maintenance of ventilation, and initiation of volume replacement via an adequate intravenous catheter. At the present time, crystalloid resuscitation with lactated Ringer's solution and buffering of acidosis with sodium bicarbonate is the standard approach, although in the future hypertonic saline solution may play a role. Hemorrhage may be classified according to the percentage of blood volume lost; losses in excess of 30% of blood volume (class III and IV hemorrhage) usually require administration of packed red blood cells and/or albumin as well. With appropriate management, the typical clinical signs of shock will be reversed and the child will demonstrate improved vital signs, peripheral circulation and sensorium, normalization of body temperature, reversal of metabolic acidosis, and resumption of normal urine output. The more aggressive the approach to resuscitation, the more prompt the patient's response and the more likely morbidity and mortality will be minimized.