23/9/21 Flashcards
What is Koebner’s Phenomenon?
Describes the appearance of new skin lesions on sites of cutaneous injury in otherwise healthy skin.
How Koebner’s Phenonemon it diagnosed?
Diagnosis: Clinical
- develops at sites of cutaneous injury to previously healthy skin
- usually has the same clinical and histological features as the patient’s original skin disease → e.g herpes zoster (shingles) or psoriasis
- NOT due to seeding of an infectious agent, an allergic reaction to a contact agent or skin breakdown
Triggers for Psoriasis (6 points)
- infections (streptococcal) + viral (including HIV)
- skin trauma (e.g Koebner phenomenon) - cuts, abrasions, sunburn
- stress
- smoking, alcohol
- medications - lithium, beta-blockers, antimalarials, NSAIDs
Next step in management in establishing a diagnosis of a clinically concerning pigmented lesions?
Excisional Biopsy with 2 mm lateral margin and as deep as the subcutaenous fat
Why do you need to complete a excisional biopsy with 2mm margins of this clinically concerning lesion? (explain to pt - 2 points)
- Difficult to identify whether a lesion has been completely encompassed in a punch biopsy - incomplete sampling leads to increased risk of underdiagnosis
- Breslow thickness which is important for management + prognostication can only be determined if complete lesion is excised.
If melanoma is confirmed following excisional biopsy, what needs to happen next? How fast does this need to happen and what does this depend on.
WLE of the lesion with margins that depend on tumour thickness.
- if initial excision removed all the lesion - WLE should take place within 4 weeks.
- if some lesion was left behind after first excision → WLE should take place ASAP.
Who should you refer to if suspecting metastatic disease?
oncologist or multidisciplinary specialist melanoma unit
True or False. Pts who have had melanoma are at no increased risk of future skin cancers.
Pts with melanoma are at an increased risk of further melanoma and non-melanoma skin cancers → need life-long surveillance
How many fold is the increase in melanoma risk in first degree relatives of pts with melanoma?
4 fold :O - yearly skin check
Glycaemic Targets for Diabetics with Heart Failure.
Moderate Glycaemic Targets - HbA1c 7.1-8
Medications Choices for Diabetics with Heart Failures (1st and 2nd Line Please) + what class of meds to avoid.
- Metformin
- SGLT2 Inhibitors - flozins
Avoid thiazolidinediones
Recommended combination for HFrEF in hypertensive patients.
ACEi, ARB or ARNI + beta-blocker and MRA
3 drugs to avoid in HFrEF in patients with coronary artery disease OR HTN
Avoid diltiazem, verapamil, moxonidine in patients with HFrEF
Recommended combination in HFpEF in pts with HTN
optimal BP control is important, use MRA with or without an ACE/ARB
Optimal drugs for ventricular rate control in AF in patient with HF.
Beta-blockers and digoxin
Drug used to maintain sinus rhythm in AF in patients with HF
Amiodarone may facilitate attainment/maintenance of sinus rhythm
In patients with coronary artery disease, consider _____ if HR >70 + LV <35% despite max beta blockers.
Ivabridine
When do you use ivabridine in CAD in patients with HF?
If HR >70 + LV <35% despite max beta blockers
SLGT2 Inhibitors aka _______
The Flozins #teamflozins
How to the SGLT2 inhibitors work?
They inhibit the sodium-glucose co-transporter (2) which means less glucose is reabsorbed (SGLT2)
True or False. SGLT2 works in improving glycaemic control in impaired kidney function.
False. not effective for glycaemic control in patients with impaired kidney function
Additional benefits of SGLT2 inhibitors. (2 points)
- can cause modest weight loss → plateaus at 6 months
- weak diuretics → contribute to blood pressure reduction + sustamed increased in haematocrit