The chief of trauma surgery at Boston Medical Center said most of the injuries his hospital treated were to the legs.
Boston Medical Center trauma surgery chief Peter Burke said hospitals were saving "large quantities" of fragments extracted from victims for the police.
"All I feel is joy, " said Dr. George Velmahos, chief of trauma surgery at Massachusetts General Hospital, referring to his hospital's 31 blast patients.
George Velmahos, chief of trauma surgery at Massachusetts General Hospital, where many of the wounded were taken, said some had blast wounds "as well as small metallic fragments that entered their body - pellets, shrapnel, nails".
Shock waves emanating from bomb blasts can cause bruises to the lungs and intestines that don't become symptomatic for a day or two after a blast, said Babak Sarani, chief of trauma and acute surgery at George Washington University Hospital in Washington, D.
The centre provides routine surgery and treatment to NHS patients in areas such as ear, nose and throat, trauma, orthopaedics, general surgery, gynaecology and ophthalmology.
Without properly-functioning adrenal glands the body cannot cope at times of stress - such as surgery, trauma or serious infection.
They say their criteria apply to conditions which are considered lower priority, not surgery following trauma, cancer, degenerative or other conditions.
BBC: NEWS | Programmes | Politics Show | Wales: NHS operations withheld
Anti-circumcisionists also believe the surgery can cause psychological trauma, affecting parent-child bonding.
He said the research would work across the range of wounds clinicians treat from trauma, burns and post-surgery complications to chronic conditions such as ulcers and diabetes complications.
BBC: ?4m wound research 'will save NHS cash,' Prof Harding says
Ketamine is also used to treat acute pain after significant tissue trauma, either as the result of surgery or an accident.
After his time in the Navy, he became the Chief of Trauma and Critical Care and Professor of Surgery at the University of Arizona Medical Center.
Dr Fumito Ichinose, assistant professor of anaesthesia at Harvard Medical School said that if the effects of hydrogen sulphide was confirmed in larger mammals it could be useful in helping to sustain the functionality of organs in patients undergoing cardiac surgery or in patients with severe trauma.
The whole point of the "risk adjusted" element of RAMI is that it's meant to allow at least some degree of comparison between death rates in different hospitals, even if say, one is a small hospital doing very little complex surgery, and another is a large hospital treating a high number of trauma and critical cases.
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