Chronic Diseases Flashcards
What clotting factor is PT?
Clotting factor II
what does INR stand for?
International normalised ratio
What drug do you adjust dose for depending on INR?
warfarin
What does aPTT stand for?
activated partial thromboplastin time
What drug do you adjust dose for depending on aPTT?
Heparin
What do INR and aPTT both assess?
- How fast blood clots
- Assess pathways of coag cascade
What pathway does PT/INR measure?
Extrinsic pathway
What type of drug is warfarin? how does it work?
- anticoagulant
- vit K antagonist
what is normal INR range?
1
what is Normal INR range on warfarin?
2-3
Patient is on warfarin. What would value of less than 2 mean?
increased risk of blood clots
Patient is on warfarin. What would value of more than 3 mean?
Increased risk of bleeding
What is heparin? how does it work?
- Anticoagulant
- Indirect thrombin inhibitor
What is normal aPTT range?
30-40 seconds
What is normal aPTT range on heparin?
1.5-2.5 x the normal range (60-80)
What regular blood checks to patients on NOACs/DOACs need?
none! ha
What does a higher INR value mean?
- Longer it takes for you’re blood to clot
- increased risk of bleeding
Questions to ask patient on warfarin?
- Why are you taking warfarin?
- how long have you been taking it?
- Any side effects?
- how is it affecting your life?
- Diet (vit K)?
- Alcohol ?
What dietary stuff have vitamin K
- all those green things! (celery, green grapes, kale, broccoli, cucumber, green beans, green apples)
What is idea number (not range) for INR on warfarin?
2.5
what conditions could cause a raised INR
- reduced clotting factors (bleeding disorders)
- liver failure
- too much anticoagulant medicine
How should warfarin be taken (timing)?
- Same time every day
- Do not double dose to catch up
Describe action of warfarin (patient friendly)
It is an anticoagulant. This means that it stops the blood from clotting too easily.
What is warfarin commonly used to treat?
DVT, PE, prevent stroke in AF
What high INR symptoms?
- Headache
- Severe stomach ache
- Increased bruising
- Prolonged bleeding after minor cuts/ menstural bleeding/ gum bleeding
- Blood in urine
What low INR symptoms?
- sudden weakness/numbess/tingling in limb
- Visual changes
- Inability to speak
- New pain, swelling, redness, heat
- New SOB or chest pain (DVT/PE symptoms)
What PMH do you ask about when discussing INR?
- Liver disease
- Bleeding disorders (haemophilia, factor 7 deficiency)
How would taking a double dose of warfarin impact INR?
increase INR
How does smoking affect INR?
increase INR
How to treat low INR?
- LMWH, warfarin
- Compression stockings if immobile
How to treat elevated INR
- Vit K
- Decrease warfarin dose and recheck INR
What is HbA1c? (patient friendly)
HbA1c shows the average blood glucose level over the previous 2-3 months as the sugar sticks to cells in the blood
How often does HbA1c need to be tested
every 3 months
what is is most common haemoglobin and what is it made up of?
- HbA1
- 2 alpha + 2 beta chains
describe HbA1 compared to HbA1c
- have no protein structural differences
- HbA1c is glycosylated
why HbA1c high in diabetic patients
In diabetic patient: not/reduced insulin response => increase blood glucose => longer encounter with RBC => glycosylated Hb => increase HbA1c
What Qs should you ask in general history taking for HbA1c?
- T1 or T2 diabetes?
- How long ago were you diagnosed?
- Explain HbA1c and benefits of low HbA1c
What is normal HbA1c range? (% and mmol/L)
<6.0% or <42mmol/L
What is prediabteic HbA1c range? (% and mmol/L)
6.0 - 6.4% or 42-47 mmol/L
What is diabetic HbA1c range? (% and mmol/L)
> 6.5% or >48 mmol/L
HbA1c SH Qs?
- How is it affecting your life?
- Diet and exercise?
- Smoking?
- Alcohol?
- Medication compliance?
What are the benefits of reducing HbA1c?
Reduce risk of:
- Retinopathy
- Neuropathy
- Diabetic nephropathy
- Cataracts
- Heart failure
- Amputation
HbA1c PC Qs?
- How are they feeling
- Any recent infection
- Any hospital admissions for DKA/hypos?
- Any symptoms of diabetes?
What are the symptoms of diabetes?
- Polyuria
- Polydipsia
- Weight change
- Visions changes
- tingling in feet
- Impotence (ED)
What can HbA1c be falsely raised in?
- Kidney failure
- Chronic excessive alcohol intake
- Vitamin B12 deficiency
HbA1c DH Qs?
- What diabetes medication do you take?
- How/when are you taking the medication?
- Site rotation?
- Any side effects
HbA1c SH Qs?
- Mood/ sleep?
- Home circumstances?
- Affecting ADL?
- Diet (dietary restrictions/ trying to lose weight)
- Exercise
- Smoking + alcohol