Post by Shifu Tolson on Jan 24, 2016 16:03:38 GMT -5
Cardiac Concussion (commodio cortis):
5 - 10 cases occur each year. They seem to be trivial non-penetrating impacts to the anterior chest that leave no visible trauma, but can result in death.
Cardiac concussion involves absorption of mechanical energy from a blunt impact as harmonic oscillations which are dampened out and converted to heat. A small part of the imparted kinetic energy may be converted to electrical impulses (Hirsch and Adams 1993)
“…an impact directly over the pericardium at > 30 mph gives rise to increasing risk of ventricular fibrillation (30% at 30 mph and 70% at 40 mph), where the impact occurs at a particularly vulnerable part of the cycle (30 ms prior to T wave peak).”
www.forensicmed.co.uk/pathology/sudden-cardiac-death/cardiac-concussion/
Cardiac concussion (commotio cordis) is seen in patients in whom the precordium has been struck with relatively little force at a vulnerable period of the cardiac cycle. These patients have no predisposing cardiac problems, and autopsy reveals no evidence of heart damage. The usual clinical presentation is that of immediate collapse secondary to a lethal arrhythmia.
www.cjem-online.ca/v6/n6/p428
CC has now been recognized as the second most common cause of sudden death in youth athletes and is being reported with increasing frequency.
oxfordmedicine.com/view/10.1093/med/9780199570164.001.0001/med-9780199570164-chapter-045
Myocardial contusion:
Bruising of the heart, can occur as a result of direct force to the chest. It can lead to heart block, which in turn can cause lightheadedness, syncope, and palpitations.
Pericardial Tamponade:
Blunt chest trauma can also result in pericardial tamponade, a life-threatening condition. Also know as cardiac tamponade, it occurs when blood (alone or in combination with other fluids) fills the pericardial sac, compressing the heart. As the pressure on the heart increases, the heart doesn't refill sufficiently and cardiac output rapidly drops. If the pericardial sac fills quickly, it may take only 100 – 200 ml of blood to cause death.
www.modernmedicine.com/modern-medicine/content/trauma-nursing-blunt-chest-injuries
5 - 10 cases occur each year. They seem to be trivial non-penetrating impacts to the anterior chest that leave no visible trauma, but can result in death.
Cardiac concussion involves absorption of mechanical energy from a blunt impact as harmonic oscillations which are dampened out and converted to heat. A small part of the imparted kinetic energy may be converted to electrical impulses (Hirsch and Adams 1993)
“…an impact directly over the pericardium at > 30 mph gives rise to increasing risk of ventricular fibrillation (30% at 30 mph and 70% at 40 mph), where the impact occurs at a particularly vulnerable part of the cycle (30 ms prior to T wave peak).”
www.forensicmed.co.uk/pathology/sudden-cardiac-death/cardiac-concussion/
Cardiac concussion (commotio cordis) is seen in patients in whom the precordium has been struck with relatively little force at a vulnerable period of the cardiac cycle. These patients have no predisposing cardiac problems, and autopsy reveals no evidence of heart damage. The usual clinical presentation is that of immediate collapse secondary to a lethal arrhythmia.
www.cjem-online.ca/v6/n6/p428
CC has now been recognized as the second most common cause of sudden death in youth athletes and is being reported with increasing frequency.
oxfordmedicine.com/view/10.1093/med/9780199570164.001.0001/med-9780199570164-chapter-045
Myocardial contusion:
Bruising of the heart, can occur as a result of direct force to the chest. It can lead to heart block, which in turn can cause lightheadedness, syncope, and palpitations.
Pericardial Tamponade:
Blunt chest trauma can also result in pericardial tamponade, a life-threatening condition. Also know as cardiac tamponade, it occurs when blood (alone or in combination with other fluids) fills the pericardial sac, compressing the heart. As the pressure on the heart increases, the heart doesn't refill sufficiently and cardiac output rapidly drops. If the pericardial sac fills quickly, it may take only 100 – 200 ml of blood to cause death.
www.modernmedicine.com/modern-medicine/content/trauma-nursing-blunt-chest-injuries