Miscellaneous Flashcards
(317 cards)
What are the biochemical features of Tumour Lysis Syndrome?
Treatment of cancer results in lysis which releases components into bloodstream: raised phosphate raised potassium raised uric acid lowered calcium (chelated by elevated phosphate) raised creatinine (renal failure)
What is the MOA of Rasbirucase?
rh-Urate oxidase which converts uric acid into allantoin. Allantoin is water soluble thus more easily excreted by the kidneys
What is the most common form of Malaria?
M falciparum
What are the features of Malaria falciparum?
Fever >39C
Hypoglycaemia
Acidosis
Severe anaemia: TATT
Schizonts on blood film
What are the complications to be concerned of regarding malaria falciparum?
Cerebral spread: seizures/coma
Acute renal failure: blackwater fever (haemorrhaging of RBCs releasing Hb into urine)
ARDS
Hypoglycaemia
DIC
What is the most common non-falciparum malaria cause?
A. P falciparum
B. P malariae
C. P ovarle
D. P vivax
D
Which forms of malaria is associated with nephrotic syndrome?
A. P vivax
B. P malariae
C. P falciparum only
D. P malariae and P falciparum
D
A 55-year-old man presents with fever, fatigue, and chest pain. The patient was discharged after a successful mitral valve replacement 6 weeks ago. An urgent echo showed the presence of a new valvular lesion. Three sets of blood cultures are taken, and a diagnosis of infective endocarditis is confirmed.
Given the background, what is the most likely causative organism?
S epidermis
A 12-hour old baby girl is noted to have dysmorphic features, including webbing of the neck and wide-spaced nipples. She is also noted to have ‘puffy’ hands and feet. She is in the 10th percentile for length and weight.
There is no family medical history and, other than being small for gestational age, there were no abnormalities noted during pregnancy.
What cardiac condition is commonly associated with the likely underlying diagnosis?
CoA
You review a patient in the respiratory clinic who has a history of recurrent pulmonary embolism despite anticoagulation with warfarin.
What lung-specific, physiological change may be expected?
TLCO reduced
What drugs should be stopped in an AKI as they are nephrotoxic?
Mnemonic: NADA
NSAIDs ACEi Diuretics Aminoglycosides ARBs
A 23-year-old woman presents with dysuria, malaise, vaginal pain, fever, and myalgia. She consents to a vaginal examination which reveals multiple painful ulcerations around the vagina and perineum. Urinalysis reveals trace leukocytes, no nitrites, and microscopic haematuria. Swabs are taken and sent and a urine MCS is also sent.
Given the most likely diagnosis, what is the most appropriate treatment?
This woman has genital herpes. The painful nature rules out lymphogranuloma venereum.
Therefore it is a Genital Herpes caused by HSV-1 which requires an antiviral for 10 days.
Valaciclovir for BDS 10/7
A 27-year-old man presents to his GP feeling generally unwell complaining of joint pain and swelling. He returned from a walking trip in Thailand one month ago and one day after his return he developed severe watery diarrhoea and abdominal cramps that lasted for one week.
On examination he appears unwell and looks fatigued. He has large effusions of the left knee and right ankle along with tender planter fascia bilaterally. He also has tender metatarsophalangeal joints on both feet. On closer inspection of the feet he has a papular rash on the soles of both feet.
For the last week he has been taking regular paracetamol and ibuprofen with minimal improvement in symptoms.
Given the most likely diagnosis what is the most appropriate next step in this patients management?
This man has Reactive Arthritis
Therefore oral steroids required for 4/6/52
A 38-year-old woman presents with a litany of symptoms that have been ongoing for the past four months. These include weight gain, which particularly bothers her around the abdomen, with troubling purplish stretch marks, thin skin and easy bruising. She has been noticing increased swelling in her ankles and poor mood. In the diagnostic work-up, a range of laboratory tests is taken.
What is the expected electrolyte abnormality in this patient?
This woman has Cushing’s Syndrome.
The elevated cortisol is due to ectopic production or exogenous sources.
Cortisol may simulate aldosterone thus increased sodium reabsorption, potassium excretion. At high levels of potassium excretion, bicarbonate is absorbed.
This results in a metabolic alkalosis that is hypokalaemic thus Hypokalaemic metabolic alkalosis.
What are the features of severe acute asthma?
RR >25
HR >110bpm
PEF 33-50% of normal
Cannot complete sentences in one breath
A 68-year-old male presents to the Emergency Department with a two-hour history of crushing left-sided chest pain radiating to the jaw. He has a past medical history of dyslipidaemia and hypertension. You perform an electrocardiogram and serum troponin which confirm an anterior ST-elevated myocardial infarction (STEMI). The nearest primary percutaneous coronary intervention (PCI) centre is three hours away by ambulance and urgent fibrinolysis is therefore given in preference to PCI.
What is the most appropriate management plan regarding myocardial revascularisation of this patient?
Take ECG 60-90 minutes later and if no correction, transfer for PCI
What are the clinical features of Port wine stains?
Do they require treatment?
Unilateral
Deep red/purple (vascular birthmark)
Darken and raise over time
Not symptomatically, but potentially if Sturge-Weber Syndrome or psychosocial implications
Cosmetic camouflage
Laser therapy
What are the clinical features of a dermatofibroma?
Solitary firm papule resulting from trauma
5-10mm in size
Skin dimples on pinching skin
What are the clinical features of Mongolian blue spots?
Flat blue/grey skin markings occurring at birth/after
Base of spine/back
Dermal melanosis with melanocytes remain deep in dermis (red wavelengths of light absorbed and blue wavelengths reflected back from brown melanin pigment deep in dermis) - “Tyndall Effect”
What is Eisenmenger Syndrome?
Give the clinical features.
Reversal of L-to-R shunt in CHD due to pulmonary hypertension.
Murmur may not be heard Cyanosis Clubbing RV failure Haemoptysis/Embolism
What is Transposition of the Great Arteries?
Give the clinical features.
What is the management of this?
Congenital heart defect with failure in embryonic development.
Aorta leaves from RV
Pulmonary artery leaves LV
Cyanosis Tachypnoea Found S2 (ejection systolic murmur) RV impulse prominent CXR: Egg-on-side appearance
Must surgically correct.
Maintain patency of any shunt with PGEs
Surgically correct
Outline what a Stokes-Adams attack is?
Syncopal episodes occurring from cardiac arrhythmia - heart block or sick sinus syndrome
How may Syncope be classified?
Cardiac
- Arrhythmia
- Structural
- Others: e.g. PE; Myocarditis
Neural
- Vasovagal
- Situational
- Carotid sinus
Orthostatic syncope
- Autonomic failure
- Drug-induced
- Volume depletion
What is a femoral aneurysm?
How may it present?
Bulging weakness in wall of femoral artery
Pulsation in groin
Pain in leg/abdomen/back
Claudication symptom
Nerve compression (femoral nerve/obturator nerve)