Medicine II Flashcards
(82 cards)
A 72-year-old man presents to his general practitioner with new-onset constipation. This started about a week ago and coincided with the onset of regular stomach cramps. His wife reports that he has also been increasingly confused in the past few days, and has been very drowsy and lethargic, with weak muscles.
His past medical history is only significant for hypertension, for which he takes regular amlodipine, atenolol, bendroflumethiazide, and ramipril. He has taken over-the-counter macrogol in the past 7 days to try and help with his constipation.
Given the likely cause of his presentation, which medication could have this side effect?
Thiazide diuretics can cause hypercalcaemia and hypocalciuria
A 56-year-old man has deteriorated rapidly after an ST-elevation myocardial infarction yesterday. During an initial ABCDE assessment, he has a cardiac arrest. The resuscitation team begin cardiopulmonary resuscitation and he is found to be in ventricular fibrillation. Three shocks have been delivered and the team has administered amiodarone along with adrenaline.
How often should adrenaline be given in this scenario?
1mg ever 3-5 mins
A 23-year-old male is undergoing a medical review at a professional football club when an ejection systolic murmur is found. He is sent for echocardiogram and subsequently diagnosed with hypertrophic obstructive cardiomyopathy (HOCM). Electrocardiogram (ECG) is normal and pulse is regular. Which of the following complications of this condition is most likely to cause sudden death in this athlete?
ventricular fibrillation
Hypertrophic obstructive cardiomyopathy - is associated with sudden death in young athletes due to ventricular arrhythmia
A 65-year-old man presents to the emergency department with central crushing chest pain 2 hours ago. His ECG on admission showed ST elevation in leads II, III and aVF. Suddenly, the patient develops worsening breathlessness. Upon cardiac auscultation, a new pan-systolic murmur is heard.
What complication is the most likely cause of this patient’s breathlessness?
Flash pulmonary oedema can occur after acute mitral valve regurgitation due to myocardial infarction
Dressler’s syndrome
refers to recurrent pericarditis following a myocardial infarction, with fever, anaemia, raised erythrocyte sedimentation rate (ESR) and pleural effusions. It typically occurs between 2 and 6 weeks following infarction and can be managed with non-steroidal anti-inflammatory drugs (NSAIDs).
A 23-year-old man is given intravenous adenosine to treat a supraventricular tachycardia. What is the approximate half-life of adenosine?
Adenosine has a very short half-life of about 8-10 seconds
A 55-year-old patient presents to the Emergency Department with severe chest pain, chills and high-grade fever. He has no known past medical history. During the examination, poor dental hygiene was noted. On auscultation, a pansystolic murmur was heard in the left lower sternal border. Blood cultures result and echocardiogram are awaited to confirm the diagnosis.
Given the likely diagnosis, what organism is most likely to have caused his condition?
streptococcus viridans - poor dental hygiene
bacterial causes of endocarditis
IV drug user-S. aureus
poor dental hygiene- S. viridans
tests for infective endocarditis
x3 separate blood culture
Transoesophageal echocardiography (TOE) will detect 95% of vegetations.
- TOE is particularly useful for the detection of mitral valve and prosthetic valve vegetation
- More sensitive at detecting aortic root and septal abscesses and leaflet perforations
vitamin k dependent clotting factors
2 7 9 10
II, VII, IX and X
A 75-year-old gentleman with a past medical history of hypertension only presents with a 3-month history of increasing breathlessness and swollen ankles. You decide to order a BNP test. Which of the following may give him a falsely low BNP result?
Aldosterone antagonists
ACE inhibitors,
ARB
beta-blockers
diuretics
obesity.
patients with suspected PE should be started on
DOAC (even before CTPA)
- some places may say LMWH and then go onto DOAC
You are reading the notes of a patient on the coronary care unit. The notes say that the patient suffered a posteriorly situated myocardial infarction. You review the ECG on admission.
Which of the following ECG findings would be most likely in this scenario?
tall R waves V1-2
The most common cause of primary hypothyroidism
is Hashimoto’s thyroiditis
- autoimmune destruction of thyroid
hyperthyroidism causes
- graves- autoimmune
- thyroid
- thyroiditis
cause of secondary hypothyroidism
- Due to TSH deficiency and usually due to pituitary disease
- Low T3 levels and non-elevated TSH
Graves disease
- Autoimmune mediated stimulation of TSH receptor on thyroid gland stimulates thyroid hormone synthesis
Effects
- Graves ophthalmopathy
- Pretibial myxoedema (Graves dermopathy)
- Thyroid acropathy
causes of thyroiditis
Q
thyroiditis
A
- Inflammation of thyroid
- Release of thyroxine into circulation
- Viral infection- de quervains thyroiditis
- After birth- post partum
- Medication- amiodarone
limited scleroderma
- Diffuse skin tightness below knees and below elbows
- Usually years of raynauds before scleroderma
- Development of Pulmonary arterial (PA) hypertension after a mean of 10 years of symptoms
CREST syndrome
- Calcinosis Cutis
-
Raynaud’s phenomenon
- Ulcers
- White/blue skin
- Oesophageal dysmotility
-
Sclerodactyly
- Very tight skin
- Telangiectasia
diffuse sclerodoma
- Less common
- High risk of mortality
- Sudden onset of skin involvement and proximal to the elbow sand knees (can effect anywhere)
scleroderma treatment
Treatment
- No cure
- Psychological support
- Calcium channel blocker- nifedipine for raynauds
- Methotrexate and mycophenolate mofetil may reduce skin thickening
- ACEi prevent hypertensive crisis and reduce mortality from renal failures
- Short courses of prednisolone for flares
- PPI for GI symptoms
sjogrens presentation
Most pts present with sicca symptoms – xerophthalmia (dry eyes), xerostomia (dry mouth) and fatigue
- Myalgia
- Arthralgia
- Dry mouth
- Fatigue
- Raynauds phenomenon
- Enlarged parotids
- Dry eyes
pathophysiology of gout
monosodium urate (MSU) crystals that accumulate in joints and soft tissues, result in acute and chronic arthritis, soft-tissue masses called tophi, urate nephropathy, and uric acid nephrolithiasis
- negatively bifringement (monsodium urate)
- needle-shaped and yellow
pseudogout
- less RF for gout
- positively birefringent crystals (calcium)
- rhomboid shape