Dental Implications For Managing Pateints With Systemic Disease Flashcards
What follows vascular response in haemostasis?
Platelet becomes activated once bound to the VWF at the damaged tissue site and adhesion and aggregation which produced an unstable clot
What is the first stage in haemostasis ?
Vascular response where there’s is vasoconstriction
What happens once the platelets become activated?
The coagulation cascade begins
What is fibrin?
It is a natrual anticoagulant controlled by fibrinolysis which give the clot stability
What are the types of coagulation defects?
Genetic: haemophilia A, B, C and Von Willebrands Aquired: drugs: warfarin , heparin, NOAC Liver disease Vit K def DIC Blood transfusion
What is haemophilia A?
Factor 8 def
How can haemophilia A be classified?
Mild moderate and severe
What is mild haemophilia A?
5-40%
What is moderate haemophilia a?
2-5%
What is severe haemophilia A?
0-1%
What is haemophilia B?
Factor 9 missing
How long is the glad life for factor 9 compared to factor 8?
Factor 9 is longer which means can be given daily
What is haemophilia C?
Factor 11 def
What is the consequence of factor 11 missing?
Rapid fibrinolysis
How do you manage haemophlili c?
FFP
Factor 11 and transexamic acid
How many types of VWD are there?
1 (mild)
2 and 3 (most symptomatic )
Pseudo VWD
What type of haematological disease is VWD similar to?
Haemophilia A
How do you manage VWD in major procured?
Factor 8 infsuin
How do you manage VWD in minor procedures?
Desmopressin acetate and transexamic acid
What types of injections must you avoid in people with genetic haematological diseases?
Regional blocks and IM
When is heparin given?
Immediate effect in acute thromboembolism
What does warfarin do?
Impairs synthesis of VIt K dependant. 2, 7, 9, 10
When would warfarin be administered?
Short term: CABG 2 months Prophylaxis to prevent DVT 3 months MI 3 months Established DVT 3 mths Xenograft cardiac valves 3 months PE 3-6 months
Long term
Recurrent DVT
RHD and AF
Cardiac prosthetic valves and arterial grafts
How do you manage the level of anticoagulant with warfarin?
INR which measures PT time
What is the normal PT ?
1
What is the PT time in DVT, PE and AF?
2.5
What is the PT in in recurrent DVT and PE and pros heart valves ?
3.5
What is the effect of amoxicillin on warfarin?
Be vigilan
3xg does usually okay
What is the effect of metronidazole on warfarin?
Avoided since warfarin rescued by half
What is the effect of erythromycin on warfarin?
Unpredictable
What is the effect of NSAIDS on warfarin?
Increaed bleeding and GI bleeds
What is the effect of daktarkn gell on warfarin?
INR 20
T/F the effects of the NOAC are reversible?
F
What are the pitons for anti platelet medication?
Ticlopidine
Clopidegerel
Low doses aspirin
Dypyramidole
What is the effect of aspirin , ticlopidind and clopodefrel? How long do they last for?
Inhibit platelet aggregation to blood vessel wall
Last for 7-10 days which is life time of platelet d
T/F dypyrimidole effect is reversible?
T
Since only acts directly on enzyme In platelets and vessel cell walls
What are the examples of NDAIDS?
Ibuprofen
Disclofensc
NSAIDS
T/F ibruprofen and Disclofensc have a reversible effect?
T once with drug is cleared platelet function restored
How commonly are NSAIDS used for anti platelet effect?
Not common
How long is the normal bleeding time?
2-10 mins longer in women
What is the normal platelet count?
150-400 x 10^9
What is the effect of having only 100-150 x 10^9 platelets?
None
Normal bleeding time
What is the effect of having 20-100x 10^9 platelets on bleeding time?
Increaed and transfusion may be needed
What is the effect of having less than 20 x 10^9 platelets on bleeding time?
Risk of spontaneous bleeding
When is thrombocytopenia significant? And what are the signs of this?
When platelets less than 100 x 10^9 /l
Petechia
Ecchymoses
Purpura
Gingival bleeding
Post op bleeding
How do you manage AI thrombocytopenia ?
Steroid or splenectomy
What can be given prophylictcally for people with high risk for IE?
Corsodyl mouthwash o.2% held 10ml held in mouth for 1min
In which type of patients should AB prophylaxis be provided other than those at risk form IE?
Hip replacement
Which type of hip replacement patients should have AB prophylaxis?
Those that are susceptible. Including Previous infection RA Immunosuppression Insulin dependant diabetic
Which AB is the drug of choice for hip replacement?
cephalosporins with clindamycine for penicillin allergy
1g cephadrine orally 1-1.5 hours pre op
600 mg clinidamycin 1 hour pre op