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Partial Curriculum Map (2010) CCT in Anaesthetics 2010, The Royal College of Anaesthetists Basic Intermediate Higher IO_BS_09 VS_IK_12 GU_HK_02 OB_BTC_C04 CT_IS_03 GU_HS_03 GU_BK_07 PC_IK_08 OB_HS_06 OB_BK_06 PB_IK_04 MA_HS_02 PB_BK_45 MT_IK_07 CT_HK_08 PB_BK_23 MT_IK_06 CT_HS_08 MT_IS_04 CT_HK_09 OR_IK_04 AD_HS_12 MA_HK_08 MA_HS_09
Objectives ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Clinical Scenarios ,[object Object],[object Object],[object Object]
Scenario 1 67 year old female admitted with a 5 day history of severe abdominal pain, and vomiting. Anuria for 2 days. Hypotensive, peripherally shut-down, confused and lethargic in A&E. Chest x-ray shows air under the diaphragm. Scheduled for emergency laparotomy. Hb 10.3 / WBC  29.8  / platelets  48 PT  24.6  / APTT  43  / Fibrinogen  0.95 Urea  21.8  / Creat  340  Q: How would you prepare this patient for theatre? Q: How would you deal with intraoperative bleeding?
ISTH Scoring system for DIC Score  >  5 = overt DIC Repeat daily if < 5 Taylor, F.B., Jr, , Toh, C.H., Hoots, W.K., Wada, H. & Levi, M. (2001) Towards definition, clinical and laboratory criteria, and a scoring system for disseminated intravascular coagulation. Journal of Thrombosis and Haemostasis., 86, 1327–1330. Test Score Platelet count ,[object Object],[object Object],[object Object],D-dimer or FDP ,[object Object],[object Object],[object Object],Prolongation of PT ,[object Object],[object Object],[object Object],Fibrinogen g/L ,[object Object],[object Object]
Disseminated intravascular coagulation
DIC - Treatment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Levi M, Toh CH, Thachil J, Watson HG. Guidelines for the diagnosis and management of disseminated intravascular coagulation. Brit J Haematol 2009; 145: 24-33.
Scenario 2 You are called to A&E to see a 78 year old male who has fallen of a ladder from a height of 6 feet. He was unconscious for around 10 minutes. He is now drowsy but responsive.  He has bruising and pain over his left chest. X-ray demonstrates at least 3 rib fractures and pleural fluid. There is no pneumothorax. CT brain shows a right frontal contusion with a small extradural. He is in atrial fibrillation and takes warfarin. PT  29  (INR  2.8 ), APTT 33, Platelets 145, HB 12.1 Q: How will you manage this man’s coagulation? Q: How will you deal with his pain?
Warfarin reversal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],* In urgent cases or where FFP is not available
PCC (Octaplex) Factor Half-life II 48-60 hours VII 1.5-6 hours IX 20-24 hours X 24-48 hours
 
Scenario 3 47 year old crushed by forklift truck. Bilateral femoral shaft fractures and unstable pelvic fractures. Left rib fractures. BP 75/30 HR 130 ABG Hb 7.6 lactate 5.9 pH 7.22 2 litres 0.9% saline and 4 units O negative in A&E, taken to theatre for pelvic and femur stabilisation.  Ongoing pelvic bleeding ++ Q: What factors are contributing to the bleeding? Q: What do you tell the blood bank (and when)?  Q: How would you optimise haemostasis?
Predicting need for massive transfusion in trauma patients… Cotton BA, Dossett L, Haut E,  et al . Multicentre validation of a simplified score to predict massive transfusion in trauma. J Trauma 2010; 69 (Suppl1): S33-39.
Massive transfusion protocols ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
Traumatic coagulopathy
Mechanisms of Coagulopathy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hyperfibrinolysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Coagulation and fibrinolysis
The “bloody vicious circle”… The lethal triad… ,[object Object],[object Object],[object Object],Lier H, Krep H, Schroeder S, Stuber F. J Trauma. 2008;65:951–960
pH and coagulation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hypothermia and coagulation
Calcium and coagulation
Mechanisms of Trauma-induced Coagulopathy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mechanisms of Trauma-induced Coagulopathy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Other issues - platelet margination ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Key  components in haemostasis… ,[object Object],[object Object],[object Object],Innerhofer P, Kienast J. Principles of perioperative coagulopathy. Best Pract Res Anesthesiol 2010; 24: 1-14.
Fibrinogen   levels  must  be protected
Evolution of fibrinogen targets…
Potential Interventions
Fresh Frozen Plasma ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
FFP in massive transfusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Alternatives to FFP…
Cryoprecipitate ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Infection risks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Other haemostasis options
The cell-based coagulation system
Haemostatic response – cell-based
Haemostatic response – cell-based
Regulation of clot formation ,[object Object]
Questions?

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Perioperative Optimisation of Coagulation and Haemostasis

  • 1.  
  • 2. Partial Curriculum Map (2010) CCT in Anaesthetics 2010, The Royal College of Anaesthetists Basic Intermediate Higher IO_BS_09 VS_IK_12 GU_HK_02 OB_BTC_C04 CT_IS_03 GU_HS_03 GU_BK_07 PC_IK_08 OB_HS_06 OB_BK_06 PB_IK_04 MA_HS_02 PB_BK_45 MT_IK_07 CT_HK_08 PB_BK_23 MT_IK_06 CT_HS_08 MT_IS_04 CT_HK_09 OR_IK_04 AD_HS_12 MA_HK_08 MA_HS_09
  • 3.
  • 4.
  • 5. Scenario 1 67 year old female admitted with a 5 day history of severe abdominal pain, and vomiting. Anuria for 2 days. Hypotensive, peripherally shut-down, confused and lethargic in A&E. Chest x-ray shows air under the diaphragm. Scheduled for emergency laparotomy. Hb 10.3 / WBC 29.8 / platelets 48 PT 24.6 / APTT 43 / Fibrinogen 0.95 Urea 21.8 / Creat 340 Q: How would you prepare this patient for theatre? Q: How would you deal with intraoperative bleeding?
  • 6.
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  • 9. Scenario 2 You are called to A&E to see a 78 year old male who has fallen of a ladder from a height of 6 feet. He was unconscious for around 10 minutes. He is now drowsy but responsive. He has bruising and pain over his left chest. X-ray demonstrates at least 3 rib fractures and pleural fluid. There is no pneumothorax. CT brain shows a right frontal contusion with a small extradural. He is in atrial fibrillation and takes warfarin. PT 29 (INR 2.8 ), APTT 33, Platelets 145, HB 12.1 Q: How will you manage this man’s coagulation? Q: How will you deal with his pain?
  • 10.
  • 11. PCC (Octaplex) Factor Half-life II 48-60 hours VII 1.5-6 hours IX 20-24 hours X 24-48 hours
  • 12.  
  • 13. Scenario 3 47 year old crushed by forklift truck. Bilateral femoral shaft fractures and unstable pelvic fractures. Left rib fractures. BP 75/30 HR 130 ABG Hb 7.6 lactate 5.9 pH 7.22 2 litres 0.9% saline and 4 units O negative in A&E, taken to theatre for pelvic and femur stabilisation. Ongoing pelvic bleeding ++ Q: What factors are contributing to the bleeding? Q: What do you tell the blood bank (and when)? Q: How would you optimise haemostasis?
  • 14. Predicting need for massive transfusion in trauma patients… Cotton BA, Dossett L, Haut E, et al . Multicentre validation of a simplified score to predict massive transfusion in trauma. J Trauma 2010; 69 (Suppl1): S33-39.
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  • 29. Fibrinogen levels must be protected
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