Systolic blood pressures of severely injured children are very often hypertensive compared with APLS ‘norms’. A lower pulse rate is associated with more severe brain injury
Comparing the systolic blood pressure (SBP) and pulse rate (PR) in injured children with and without traumatic brain injury
Resuscitation. 2010 Apr;81(4):418-21
Tag Archives: Trauma
European Trauma Bleeding Guidelines updated
Update 2013: since this post was written in 2010, new guidelines have been written entitled: “Management of bleeding and coagulopathy following major trauma: an updated European guideline” which are available here
The 2007 guidelines on management of bleeding in trauma have been updated in the light of new evidence and modern practice. The guideline group summarises their recommendations as:
- We recommend that the time elapsed between injury and operation be minimised for patients in need of urgent surgical bleeding control. (Grade 1A).
- We recommend adjunct tourniquet use to stop life-threatening bleeding from open extremity injuries in the pre-surgical setting. (Grade 1C).
- We recommend that the physician clinically assess the extent of traumatic haemorrhage using a combination of mechanism of injury, patient physiology, anatomical injury pattern and the patient’s response to initial resuscitation. (Grade 1C).
- We recommend initial normoventilation of trauma patients if there are no signs of imminent cerebral herniation. (Grade 1C).
- We recommend that patients presenting with haemorrhagic shock and an identified source of bleeding undergo an immediate bleeding control procedure unless initial resuscitation measures are successful. (Grade 1B).
- We recommend that patients presenting with haemorrhagic shock and an unidentified source of bleeding undergo immediate further investigation. (Grade 1B).
- We recommend early imaging (FAST or CT) for the detection of free fluid in patients with suspected torso trauma. (Grade 1B).
- We recommend that patients with significant free intraabdominal fluid and haemodynamic instability undergo urgent intervention. (Grade 1A).
- We recommend further assessment using computed tomography for haemodynamically stable patients who are either suspected of having torso bleeding or have a high risk mechanism of injury. (Grade 1B).
- We do not recommend the use of single haematocrit measurements as an isolated laboratory marker for bleeding. (Grade 1B).
- We recommend both serum lactate and base deficit measurements as sensitive tests to estimate and monitor the extent of bleeding and shock. (Grade 1B).
- We recommend that routine practice to detect post-traumatic coagulopathy include the measurement of international normalised ratio (INR), activated partial thromboplastin time (APTT), fibrinogen and platelets. INR and APTT alone should not be used to guide haemostatic therapy. (Grade 1C) We suggest that thrombelastometry also be performed to assist in characterising the coagulopathy and in guiding haemostatic therapy. (Grade 2C).
- We recommend that patients with pelvic ring disruption in haemorrhagic shock undergo immediate pelvic ring closure and stabilisation. (Grade 1B).
- We recommend that patients with ongoing haemodynamic instability despite adequate pelvic ring stabilisation receive early preperitoneal packing, angiographic embolisation and/or surgical bleeding control. (Grade 1B).
- We recommend that early bleeding control of the abdomen be achieved using packing, direct surgical bleeding control and the use of local haemostatic procedures. In the exsanguinating patient, aortic cross-clamping may be employed as an adjunct. (Grade 1C).
- We recommend that damage control surgery be employed in the severely injured patient presenting with deep hemorrhagic shock, signs of ongoing bleeding and coagulopathy. Additional factors that should trigger a damage control approach are hypothermia, acidosis, inaccessible major anatomic injury, a need for time-consuming procedures or concomitant major injury outside the abdomen. (Grade 1C).
- We recommend the use of topical haemostatic agents in combination with other surgical measures or with packing for venous or moderate arterial bleeding associated with parenchymal injuries. (Grade 1B).
- We recommend a target systolic blood pressure of 80-100 mmHg until major bleeding has been stopped in the initial phase following trauma without brain injury. (Grade 1C).
- We recommend that crystalloids be applied initially to treat the bleeding trauma patient. (Grade 1B) We suggest that hypertonic solutions also be considered during initial treatment. (Grade 2B) We suggest that the addition of colloids be considered within the prescribed limits for each solution in haemodynamically unstable patients. (Grade 2C).
- We recommend early application of measures to reduce heat loss and warm the hypothermic patient in order to achieve and maintain normothermia. (Grade 1C).
- We recommend a target haemoglobin (Hb) of 7-9 g/dl. (Grade 1C).
- We recommend that monitoring and measures to support coagulation be initiated as early as possible. (Grade 1C).
- We recommend that ionised calcium levels be monitored during massive transfusion. (Grade 1C) We suggest that calcium chloride be administered during massive transfusion if ionised calcium levels are low or electrocardiographic changes suggest hypocalcaemia. (Grade 2C).
- We recommend early treatment with thawed fresh frozen plasma in patients with massive bleeding. (Grade 1B) The initial recommended dose is 10-15 ml/kg. Further doses will depend on coagulation monitoring and the amount of other blood products administered. (Grade 1C).
- We recommend that platelets be administered to maintain a platelet count above 50 × 109/l. (Grade 1C) We suggest maintenance of a platelet count above 100 × 109/l in patients with multiple trauma who are severely bleeding or have traumatic brain injury. (Grade 2C) We suggest an initial dose of 4-8 platelet concentrates or one aphaeresis pack. (Grade 2C).
- We recommend treatment with fibrinogen concentrate or cryoprecipitate if significant bleeding is accompanied by thrombelastometric signs of a functional fibrinogen deficit or a plasma fibrinogen level of less than 1.5-2.0 g/l. (Grade 1C) We suggest an initial fibrinogen concentrate dose of 3- 4 g or 50 mg/kg of cryoprecipitate, which is approximately equivalent to 15-20 units in a 70 kg adult. Repeat doses may be guided by thrombelastometric monitoring and laboratory assessment of fibrinogen levels. (Grade 2C).
- We suggest that antifibrinolytic agents be considered in the bleeding trauma patient. (Grade 2C) We recommend monitoring of fibrinolysis in all patients and administration of antifibrinolytic agents in patients with established hyperfibrinolysis. (Grade 1B) Suggested dosages are tranexamic acid 10-15 mg/kg followed by an infusion of 1-5 mg/kg per hour or ε-aminocaproic acid 100-150 mg/kg followed by 15 mg/kg/h. Antifibrinolytic therapy should be guided by thrombelastometric monitoring if possible and stopped once bleeding has been adequately controlled. (Grade 2C).
- We suggest that the use of recombinant recombinant activated coagulation factor VII (rFVIIa) be considered if major bleeding in blunt trauma persists despite standard attempts to control bleeding and best-practice use of blood components. (Grade 2C).
- We recommend the use of prothrombin complex concentrate for the emergency reversal of vitamin K-dependent oral anticoagulants. (Grade 1B).
- We do not suggest that desmopressin (DDAVP) be used routinely in the bleeding trauma patient. (Grade 2C) We suggest that desmopressin be considered in refractory microvascular bleeding if the patient has been treated with platelet-inhibiting drugs such as aspirin. (Grade 2C).
- We do not recommend the use of antithrombin concentrates in the treatment of the bleeding trauma patient. (Grade 1C).
Management of bleeding following major trauma: an updated European guideline.
Crit Care. 2010 Apr 6;14(2):R52 (Pub Med abstract)
Full Text Link
Battlefield resuscitation
An excellent review of the current British military practice to prevent and treat the acute coagulopathy of trauma shock (ACoTS) describes pathophysiology and treatment options and offers an algorithm for management. Key components of the system (when indicated according to their algorithm) outlined include:
- Pre-hospital damage control shock resuscitation by a forward medical team, consisting of RSI with reduced dose thio or ketamine with suxamethonium or rocuronium, large bore sublclavian access, and early use of warmed blood products
- 1:1:1 packed red cells, fresh frozen plasma, and platelets,
- Cryoprecipitate
- Tranexamic acid
- Recombinant activated factor VII
- Permissive hypotension aiming for a systolic BP of 90 mmHg, using blood products and avoiding vasopressors according to a ‘flow rather than pressure’ philosophy
- Avoiding hypothermia by giving warmed blood products and employing active patient warming methods
- Buffering acidosis using Tris-hydroxymethyl aminomethane (THAM), which may be superior to bicarbonate by not affecting minute ventilation or coagulation, and maintaining its efficacy in hypothermic conditions
- Minimising hypoperfusion with an anaesthetic strategy that provides effective analgesia and vasodilation, using high dose fentanyl and a low concentration volatile agent
- Using fresh whole blood for resistant coagulopathy
Battlefield resuscitation
Curr Opin Crit Care. 2009 Dec;15(6):527-35
Sorting ABCD issues pre-hospital
Prospectively collected data on 727 major trauma patients from a Portugese trauma centre registry enabled the comparison of mortality between three groups of patients with a priori defined life threatening ‘ABCD’ problems: those whose ABCD issues were treated in the field by a pre-hospital emergency physician, those that were treated at another hospital prior to trauma centre transfer, and those whose ABCD issues were first treated on arrival at the trauma centre. The study population included mixed urban and rural trauma.
Patients from the pre-hospital and first hospital groups had 20% and 27% mortality respectively, compared to 38% among those whose life-threatening events were corrected only at the trauma centre.
Patients whose life- threatening events were treated in the pre-hospital environment had lower mortality but at the same time were younger and less severely injured, so a multivariate logistic regression was performed to adjust the odds of death to patient characteristics and trauma severity as well as time from accident to trauma centre. Logistic regression showed that increases in mortality were associated with female gender and older age, penetrating type of trauma, higher anatomic severity (ISS), higher physiological severity (RTS) and having the life-threatening events corrected only at the trauma centre. Logistic regression showed that patients whose life-threatening events were corrected only at the trauma centre had an odds of death 3.3 times greater than those from the pre-hospital group, adjusted for patient and trauma characteristics and time to trauma centre.
Correcting life-threatening events pre- trauma centre (pre-hospital and first hospital) increased the total time from the accident to trauma centre, but long pre-hospital times were not associated with worse outcome.
The importance of pre-trauma centre treatment of life-threatening events on the
mortality of patients transferred with severe trauma
Resuscitation. 2010 Apr;81(4):440-5
Spine immobilisation in penetrating trauma
In a retrospective study of 45,284 penetrating trauma patients, unadjusted mortality was twice as high in the 4.3% of patients who underwent spine immobilisation, compared with those who were not immobilised.
An accompanying editorial comments: ‘The number needed to treat with spine immobilization to potentially benefit one penetrating trauma patient was 1,032. The number needed to harm with spine immobilization to potentially contribute to one death was 66.‘
Spine immobilization in penetrating trauma: more harm than good?
J Trauma. 2010 Jan;68(1):115-20
NIV in chest trauma
ICU patients with thoracic trauma who had no other indication for intubation than marked hypoxaemia (pO2/FiO2 < 200 mmHg) were randomised to intubation vs non-invasive ventilation (NIV). Analgesia was via epidural bupivacaine / fentanyl or iv remifentanil. Numbers are small (total 50 patients) - partly because the trial was stopped early due to large difference in the outcome of tracheal intubation between the two groups favouring NIV. Length of hospital stay was significantly shorter in the NIV group but there was no survival difference.
Noninvasive ventilation reduces intubation in chest trauma-related hypoxemia: a randomized clinical trial
Chest. 2010 Jan;137(1):74-80
Estimating burn survival
Even though we might not know it’s called that, many of us are familiar with the Baux score, defined as the sum of age in years and percent body burn, to predict percent mortality after severe burns. This is however a little out of date due to advances in burn care, and does not take into account inhalational injury.
The Baux score was modified using data on 39,888 burned patients using a logistic regression model that showed that age and percent burn contribute almost equally to mortality and that the presence of inhalation injury added the equivalent of 17 years (or 17% burn). These observations suggested a revised Baux Score:
Per Cent Mortality = Age + Percent Burn + [17 x (Inhalation Injury, 1= yes, = no)]
Simplified Estimates of the Probability of Death After Burn Injuries: Extending and Updating the Baux Score
J Trauma. 2010 Mar;68(3):690-7
Guidelines on penetrating abdominal trauma
The Eastern Association for the Surgery of Trauma has published guidelines on the nonoperative management of penetrating abdominal trauma.
RECOMMENDATIONS
- Patients who are hemodynamically unstable or who have diffuse abdominal tenderness should be taken emergently for laparotomy (level 1).
- Patients who are hemodynamically stable with an unreliable clinical examination (i.e., brain injury, spinal cord injury, intoxication, or need for sedation or anesthesia) should have further diagnostic investigation performed for intraperitoneal injury or undergo exploratory laparotomy (level 1).
- A routine laparotomy is not indicated in hemodynamically stable patients with abdominal stab wounds (SWs) without signs of peritonitis or diffuse abdominal tenderness (away from the wounding site) in centers with surgical expertise (level 2).
- A routine laparotomy is not indicated in hemodynamically stable patients with abdominal gunshot wounds (GSWs) if the wounds are tangential and there are no peritoneal signs (level 2).
- Serial physical examination is reliable in detecting significant injuries after penetrating trauma to the abdomen, if performed by experienced clinicians and preferably by the same team (level 2).
- In patients selected for initial nonoperative management, abdominopelvic CT should be strongly considered as a diagnostic tool to facilitate initial management decisions (level 2).
- Patients with penetrating injury isolated to the right upper quadrant of the abdomen may be managed without laparotomy in the presence of stable vital signs, reliable examination, and minimal to no abdominal tenderness (level 3).
- The majority of patients with penetrating abdominal trauma managed nonoperatively may be discharged after 24 hours of observation in the presence of a reliable abdominal examination and minimal to no abdominal tenderness (level 3).
- Diagnostic laparoscopy may be considered as a tool to evaluate diaphragmatic lacerations and peritoneal penetration (level 2).
Practice Management Guidelines for Selective Nonoperative Management of Penetrating Abdominal Trauma
J Trauma. 2010 Mar;68(3):721-733
CT cervical spine in obtunded trauma patients
Prolonged collar use and spinal immobilisation in ICU patients can contribute to pressure sores, increased intracranial pressure, venous obstruction, difficulties with airway management, difficulties with central venous access, respiratory complications, and DVT, so a reliable investigation to rule out unstable cervical spine injury is required. Several studies demonstrate the high sensitivity of CT, and now a prospective study from Canada attempts to lend further support to this.
Comparing against their chosen gold standard of dynamic radiography, ie. flexion/extension views (F/E) in 402 patients who received both tests, there was one case of injury detected by F/E but not by CT, leading to quoted sensitivity of 99.75%. However this negative CT turned out to be a reporting error – the scan, which the authors include in their article, was clearly abnormal.
One weakness of this study is that they excluded patients who died on ICU. More worrying are the stats quoted. The authors stat ‘four hundred one patients (99.75%) had normal CT and F-E images facilitating clinical clearance of their C-spine and discontinuation of spinal precautions‘. So in other words, there was only one patient in their series of 402 with an injury (according to the gold standard), and this was missed. The sensitivity is therefore zero percent, not 99.75%. What seems to be a further error is the reporting in a table of 401 patients who had ‘Positive CT and Negative F-E’, which if true, would give a specificty of zero too!
This paper covers an important topic for intensivists but it seems to me to be too flawed to add meaningfully to the existing evidence that necks can be ‘cleared’ by CT in patients without signs of cervical spine injury, in whom it has been said that the risks of prolonged collar use and immobilisation may outweigh the risks of missed cervical injury.
Cervical spine clearance in obtunded blunt trauma patients: a prospective study
J Trauma. 2010 Mar;68(3):576-82
Better TBI outcome with HEMS
A retrospective study from Italy compared outcomes of head injured patients cared for by a ground ambulance service (GROUND) with those managed by a HEMS team that included an experienced pre-hospital anaesthetist. Interestingly 73% of the ground group were also attended by a physician, but one ‘with only basic life-support capabilities and no formal training in airways management’. Despite these limited skills a results table shows that 36% of the GROUND group were intubated on scene (compared with 92% of the HEMS group), although without the use of neuromuscular blockers.
The HEMS group consisted of 89 patients and the GROUND group of 105 patients. There were no statistical differences in age, ISS, aISShead, or GCS, although arterial hypotension at arrival at the ER was present in 18% of HEMS patients and in 36% of GROUND patients (P < 0.001).
The overall mortality rate was lower in the HEMS than in the GROUND group (21 vs. 25% , P < 0.05). The survival with or without only minor neurological disabilities was higher in the HEMS than in the GROUND group (54 vs. 44% respectively, P < 0.05); among the survivors, the rate of severe neurological disabilities was lower in the HEMS than in the GROUND group (25 vs. 31%, P < 0.05). The out-of-hospital phase duration was longer in the HEMS group but this group had a faster time to definitive care (neurosurgery or neurocritical care).
Influence of prehospital treatment on the outcome of patients with severe blunt traumatic brain injury: a single-centre study
Eur J Emerg Med. 2009 Dec;16(6):312-7