Tamponade:

Tamponade is a condition of blood flow stoppage into a blood vessel by a constriction of the vessel by an outside force.
Tamponade is a useful method of stopping a hemorrhage. This can be achieved by applying an absorbent dressing directly onto a wound, thereby absorbing excess blood and creating a blockage, or by applying direct pressure with a hand or a tourniquet.

There can, however, be disastrous consequences when tamponade occurs as a result of health problems, as in the case of cardiac tamponade. In this situation, fluid collects between the heart muscle and the pericardial sac. The pressure within the sac prevents the heart from expanding fully and filling the ventricles, with the result that a significantly reduced amount of blood circulates within the body. If left unchecked, this condition will result in death.

Emergency medicine:

Emergency medicine is a medical specialty in which a physician receives practical training to provide patients with acute illnesses or injuries which require immediate medical attention. While not usually providing long-term or continuing care, emergency medicine physicians diagnose a variety of illnesses and undertake acute interventions to stabilize the patient. Emergency medicine physicians practice in hospital emergency departments, in pre-hospital settings via emergency medical service, other locations where initial medical treatment of illness takes place, and recently the Intensive-care unit.

Just as clinicians operate by immediacy rules under large emergency systems, emergency practitioners aim to diagnose emergent conditions and stabilize the patient for definitive care.Urgent care centers are staffed by physicians, physician assistants, and nurses including nurse practitioners. Such practitioners may or may not be formally trained in emergency medicine. The centers offer primary care treatment to patients who desire or require immediate care, but who do not reach the acuity that requires care in an emergency department or admission to a hospital.