Medical Advances





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                      Thank you to the following reviewers of the curriculum: Andrew Demko, Rainier Junior/Senior High School; George Herring, University of Kentucky; Mark Lawrence, University of Texas at Austin; Susan Tomlinson, Franklin Central High School.



What are some of the positive impacts of war? It may be hard to identify many, but all can agree that the advancement of medicine and medical care are positive consequences of the challenges faced in war.

During World War II, combat medics, or military personnel whose primary duty is to provide frontline trauma care, provided the first step of care to an injured solider at aid stations on the field, as depicted in slide 1. For those that needed further care, ground evacuations by ambulance, such as the one depicted in slide 2, brought soldiers to mobile field hospitals if present in the area. Slide 3 depicts a field hospital in Bougainville, New Guinea during WWII, where necessary procedures like amputations might have been performed to treat traumatic injuries. Over 15,000 soldiers received amputations of limbs in World War II as a result of their injuries.

During the Korean War, the installation of Mobile Army Surgical Hospitals (MASH), which were first introduced in World War II, became the standard for treating extensive traumatic combat injuries. Injured soldiers would first be taken to aid stations and then routed to MASH facilities, such as the ones depicted in slides 4 and 5. As a result of the wide presence of MASH facilities, the mortality rate for those evacuated from the field dropped from 4% in World War II to 2.5% in Korea, meaning a wounded soldier who was evacuated had over a 97% chance of surviving.

Another major medical advance of the Korean War was the improvement in vascular reconstruction surgery, or the repair of arteries and vessels. Improvement in vascular reconstruction led to a significantly lower rate of amputation as compared with World War II, at just 13% of the injured vs. 36% in World War II. Famed Army surgeon Michael DeBakey (seen in slide 6) was a pioneer in both the widespread establishment of MASH facilities and the improved methods for vascular reconstruction. Further improvements in vascular reconstruction reduced the amputation rate in Vietnam to just 8%.

With the Vietnam War came major advances in medical care, some of which continue to be used as standard practice in civilian medical care today. Perhaps the most significant innovation in medical care of the Vietnam War was the widespread use of air ambulances for helicopter evacuation—also known as medevacs (see slide 7). The Bell UH-1 helicopter reduced the amount of time from wounding to treatment to an average of 35 minutes, a monumental decrease as compared to the 4-6 hours from wounding to treatment for the evacuated in Korea (see slide 8). There were a total of 116 helicopter ambulances operating in Vietnam by 1968, and after state authorities in the US began following suit in using helicopters to transport highway crash victims, the practice became the norm—many hospitals in the US have helicopter landing pads for this purpose.

Another innovation which factored into a greater ability to receive medical care was the installation of long-range radios able to cover distances of up to 5 miles- they were known as PRC-25s, as seen in slide 9. The widespread use of long-range radios reduced the response time to an injured solider—it took an average of just 9 minutes from request to the launch of a medevac toward its destination. Improved radio communication also meant that the status and needs of the injured solider could be relayed to the hospital while en route. “Dust-off” became the radio signal to call for air evacuation (see slide 10). Dust-off continues to be the term used to refer to air evacuation crews.

Perhaps the greatest innovation in medical care introduced on a wide scale in Vietnam was the use of pre-hospital care by para-medical professionals, a system which is now known to the public as EMS (Emergency Medical System). The para-medics that administered care before a wounded solider could be transported to a hospital would perform certain procedures such as shock resuscitation and fluid replacement, with a more organized blood program to more quickly assist those suffering from major blood loss. The use of non-type specific blood (O negative, which is the universal donor) was introduced on a wide scale in Vietnam and has become the standard practice in blood transfusion for traumatic injuries.

Since Vietnam, medical care has continued to evolve as result of challenges faced on the battlefield. In 1995, damage control surgery was introduced and has since become the standard procedure for care in settings like Iraq and Afghanistan. The goal of damage control surgery is to perform stabilizing surgery before an injured solider is able to reach intensive care, doing only what’s needed to prevent ongoing blood loss and organ spillage (see slide 12). Soldiers serving in Iraq and Afghanistan have also have benefitted from medical innovations such as chitosan or Quik-Clot, which are derived from the shells of shrimp and speed up the process of clotting when applied to a wound, to prevent major blood loss (see slide 13).

Innovations in the transportation of the injured have also impacted the level and immediacy of care for wounded soldiers. The use of medevacs in Vietnam was revolutionary in the 1960’s; the use of “Flying ICUs” is considered a remarkable advance in the context of today’s military conflicts. Flying ICUs (intensive care units), as seen in slide 14, are Air Force planes which have permanently installed ICU devices and a range of skilled medical professionals able to provide the highest level of care within minutes of wounding.  While many advancements in medical care were introduced at a wide scale in Vietnam, military medical care continues to advance today and influence medical care in your own local hospitals. In looking at the level of trauma that soldiers often must go through, it is important to recognize their service to the nation.