MSRA Flashcards
Which 5 medications are commonly first line in the treatment of TB?
Isoniazid
Ethambutol
Rifampicin
Pyrazinamide
+Pyridoxine (vitamin supplement given with Isoniazid to prevent peripheral neuropathy)
What is the most common cause of adrenal insufficiency?
Secondary - Long term exogenous steroid exposure
What is the first line treatment for an Addisonian Crisis?
IV Hydrocortisone (e.g. 100mg STAT)
Is primary biliary cirrohsis/cholangitis (PBC) more common in women or men?
Women
Is primary sclerosis cholangitis more common in women or men?
Men
Are anti-mitochondrial antibodies positive in PBC or PSC?
Anti-mitochondrial (AMA) antibodies are positive in PBC
What appearance of the bile ducts is indicative of PSC on cholangiogram/MRCP/ERCP?
Beaded appearance of the bile ducts
Which condition is strongly associated with ulcerative colitis? PBC or PSC?
PSC
Both PBC and PSC can lead to cirrhosis however which one can lead to cholangiocarcinoma?
PSC
For a diagnosis of COPD, what is the FEV1/FVC ratio?
<0.7
Mild COPD FEV1 is?
> 80% predicted
Moderate COPD FEV1 is?
50-79% predicted
Severe COPD FEV1 is?
30-49% predicted
Very severe COPD FEV1 is?
<30% predicted
What is the first line treatment for COPD patients?
Offer a
- Short acting beta-2 agonist (SABA) - e.g. salbutamol, terbutaline
Or
- Short-acting muscarinic antagonist (SAMA) e.g. ipratropium
If patients have exacerbations despite first line treatment for COPD, with NO asthmatic features, what should be offered?
- Long acting beta-2 agonist (LABA) e.g. salmeterol, formoterol PLUS a long acting muscarinic antagonist (LAMA) e.g. tiotropium
If patients have exacerbations despite first line treatment for COPD, with NO asthmatic features but have trialled a LABA/LAMA, what should be offered?
Consider a 3 month trial of LABA+LAMA AND inhaled corticosteroid (ICS).
If not improvement @ 3 months - stop ICS and continue LABA+LAMA
If symptoms have improved, continue LABA+LAMA+ICS and review annually.
If patients have exacerbations despite first line treatment for COPD, WITH asthmatic features, what should be offered?
LABA (e.g.salmeterol,formoterol) + ICS
If continue to be symptomatic, offer LABA+LAMA+ICS
Complication of taking an ACE inhibitor during pregnancy
First trimester: Relatively safe
Second and third trimester: Associated with renal tubular aplasia and intrauterine growth retardation (IUGR)
Which antibiotics are safe during pregnancy?
Penicillins, erythromycin and cephalosporins
Which trimester is trimethoprim contraindicated in?
First
Which trimester are tetracyclines contraindicated in?
Third
What is diethylstillbestrol and why is it contraindicated in pregnancy?
Synthetic, non-steroidal oestrogen used in the treatment of breast cancer in postmenopausal women.
Causes a rare vaginal tumour (vaginal clear cell adenocarcinoma) in girls and young women exposed in utero
Malformation linked to Vitamin A (e.g. retinoid acid) and pregnancy?
Malformations of the ear
Malformation linked to warfarin and pregnancy?
First trimester:
- Foetal warfarin syndrome: skeletal abnormalities, brachydactyly (short fingers and toes), underdeveloped extremities
Second and third trimester:
- Less commonly assoc with birth defects. Most commonly: CNS disorders
Most common paediatric malignancy?
Acute lymphoblastic leukaemia (ALL)
Peak age incidence of Acute lymphoblastic leukaemia (ALL)?
2-5 years old
Which type of haematological malignancy is associated with clonal expansion of immature lymphoid progenitor cells (e.g. T-lympocytes) that express a protein called terminal deoxynucleotidyl transferase (TdT)?
Acute lymphoblastic leukaemia (ALL)
Which infectious disease often presents with erythema migrans?
Lyme Disease
- Bulls eye rash around tick bite
Which oral antibiotics can be used to treat Lyme disease?
Doxycycline or Amoxicillin
Which haematological malignancy features the Philadelphia chromosome?
Chronic Myeloid Leukaemia
What a two main risk factors for chronic myeloid leukaemia?
- Male Sex
- Exposure to ionising radiation
Most common age affected by CML?
65-74 years old
FBC findings in CML?
- Raised WCC
- Anaemia
- Platlets can be normal, raised or low
3 conditions which can worsen during pregnancy?
- SLE
- HSV
- Acne Rosacea
First cranial nerve?
Olfactory
- smell
Second cranial nerve?
Optic
- Vision
Third cranial nerve?
Oculomotor
- Pupillary constriction (light and accommodation)
- Moves eye up, down and peripherally
- Moves eye lid
Fourth cranial nerve?
Trochlear
- Inferior lateral movement of the eye (superior oblique - SO4)
Fifth cranial nerve?
Trigeminal
- Corneal reflex
- Sensation of eyebrows, cheeks and chin)
- Chewing, biting and lateral jaw movements
Sixth cranial nerve?
Abducens
- Inferior lateral movements of the eye (lateral rectus - LR6)
Seventh cranial nerve?
Facial
- Taste - anterior 2 thirds of tongue
- Forehead and facial movements
Eighth cranial nerve?
Vestibulocochlear
- Hearing and balance
Ninth cranial nerve?
Glossopharyngeal
- Swallowing and phonation
- Posterior third of tongue
Tenth cranial nerve?
Vagus
- Tongue and back of throat sensation
- Gag reflex
- Swallowing
Eleventh cranial nerve?
Accessory
- Shoulder movement
Twelfth cranial nerve?
Hypoglossal
- Tongue movement
Incubation period of campylobacter jejuni?
2-5 days (long)
Incubation period of Bacillus cereus?
2-12 hours (short)
Incubation period of clostridium perfringens?
8-18 hours (short)
Incubation period of s aureus (gastroenteritis)?
2-6 hours (short)
Recurrent infection, especially with n. meningitidis and n. gonorrhoea could indicate what kind of immunodeficiency?
Membrane attack complex (MAC) deficiency
- Made up of C5-9
- Final stage of complement activation which leads to the formation of a hole in the cell wall and cell lysis
Anaphylaxis to blood transfusions could indicate what kind of immunodeficiency?
IgA deficiency
Which cancers does the COCP increase risk of?
Breast and Cervical
- Way to remember: increased the risk of cancers we screen for
Which cancers does the COCP decrease risk of?
Endometrial and ovarian
Unwanted side effect of nicorandil?
Oral ulceration
Which other skin condition is palmoplantar pustulosis associated with?
Psoriasis. Also strong association with smoking.
Which type of hypersensitivity reaction is mediated by IgE?
Type 1 (allergy) - mast cell degranulation
Which type of hypersensitivity reaction is antibody mediated i.e. antibody/antigen interaction? And what are some examples?
Type 2. Examples include haemolytic anaemia of the newborn and goodpastures syndrome.
Which type of hypersensitivity reaction is immune complex mediation? Give examples.
Type 3 - e.g. rheumatoid arthritis and SLE
Which type of hypersensitivity is ‘delayed hypersensitivity’ reaction? Give examples
Type 4 - chronic transplant rejection and contact dermatitis.
Which type of hypersensitivity is ‘receptor mediated’ or ‘autoimmune’? Give examples
Type 5 - Grave’s disease, Myasthenia gravis
What is the first stage of diabetic retinopathy and what are some of the findings on fundoscopy?
First stage = Background diabetic retinopathy
Features:
- Microaneurysms
- Haemaorrhages
- Exudates
No Rx needed. Needs annual screening and improving diabetic control
What is the second stage of diabetic retinopathy and what are some of the findings on fundoscopy?
Second stage = Pre-proliferative retinopathy
Features:
- Multiple large deep haemorrhages (blots)
- Cotton wool spots
Second = blots and spots
What is the third stage of diabetic retinopathy and what are some of the findings on fundoscopy?
Third stage = Proliferative retinopathy
Features:
- Neovascularisation however these are fragile vessels which can burst and cause vitreous haemorrhages
More common in T1DM
What is the fourth stage of diabetic retinopathy and what are some of the findings on fundoscopy?
Fourth stage = Diabetic maculopathy
More common in T2DM
Which pneumonia (causative organism) often follows a viral infection such as influenza and is commonly seen in IVDUs? And what changes are seen on FBC?
Staphylococcus chest infections. Causes a raised leucocyte count.
What is the most common causative organism in community acquire pneumonia?
S. Pneumoniae
Which type of pneumonia (causative organism) is associated with cavitating lesions in the upper lobes and associated with alcoholism and the elderly?
Klebsiella
Which immunoglobulin deficiency predisposes to mucosal infections?
IgA
Which immunoglobulin deficiency predisposes to parasitic/helminthic infections and non-allergic reactive airways disease?
IgE
Which immunoglobulin deficiency predisposes to bacterial, fungal and viral infections?
IgM
(think M = microbes)
Which immunoglobulin deficiency predisposes to infections from encapsulated bacteria?
IgG
(e.g. N. meningococcus, H. influenzae, S. Pneumoniae)
What type of inheritance pattern is seen in multiple endocrine neoplasia (MEN)?
Autosomal dominant
What type of tumours are seen in multiple endocrine neoplasia 1 (MEN1)?
3 Ps
- Parathyroid
- Pituitary
- Pancreas
What type of tumours are seen in multiple endocrine neoplasia 2A (MEN2A)?
Phaeochromocytoma
Parathyroid
Medullary thyroid
What type of tumours are seen in multiple endocrine neoplasia 2B (MEN2B)?
Phaeochromocytoma
Medullary thyroid
Marfanoid appearance
Mucosal neuromas
What is the preferred option for treatment of thyrotoxicosis in pregnancy? What are the potential risks of the contraindicated treatments?
Thyroidectomy
- Carbimazole = teratogenic
- Propylthiouracil = crosses the placenta and can cause neonatal goitre and hypothyroidism
Fetal limb injury is a risk with amniocentesis? TRUE OR FALSE
TRUE although uncommon
After how many weeks should amniocentesis be carried out?
15 weeks
What is the ICD-10 criteria for anorexia nervosa? (5 criteria - all must be fulfilled)
- BMI <17.5
- Self induced weight loss
3.Body image distortion
- Endocrine consequences e.g amenorrhoea
5.If onset if prepubertal, it can cause delay of pubery
In adrenal insufficiency (e.g. addisons), what will the potassium, sodium, calcium and glucose be? (high or low)
Hyperkalaemia
Hyponatraemia
Hypoglycaemia
Hypercalcaemia
What is the gold standard test for diagnosing adrenal insufficiency? E.g. Addisons. And how is it carried out?
Short synacthen test
- Administer exogenous ACTH, then measure cortisol levels at 30 or 60 minutes
- Normal response = rise in cortison. If there is a deficiency then there will be no rise
- Failure to rise above 550nmol/l = deficiency
By what age should a child be able to walk?
18 months
By what age to children develop shyness around strangers?
12 months
By what age should a child be able to pull themselves up from the floor to standing and cruise?
12 months
By what age should primitive reflexes have disappeared e.g. moro and grasp reflex?
6 months
By what age can most children hop on one foot?
4 years
By what age can most children jump on 2 feet?
3 years
Why are children with DiGeorge syndrome pre-disposed to recurrent infections?
Absent or hypoplastic thymus leading to low T-cell production
Features of DiGeorge syndrome (CATCH 22)?
C - Cardiac abnormalities (most common = ToF)
A - Abnorma faces - smooth philtrum, low set nasal bridge
T - Thymic aplasia
C - Cleft palate
H - Hypocalcaemia and hypoparathyroidism
22 - Deletion on chromosome 22
Complication of tetracyclines and pregnancy?
Discoloured teeth if taken in 2nd and 3rd trimester and skeletal development abnormalities if taken in 1st trimester
Complication of ACE inhibitors in pregnancy?
Renal impairment of the foetus + possible skull deformities and oligohydramnios
Complication of streptomycin (and all other aminoglycosides) in pregnancy?
Auditory and vestibular nerve damage
Complication of B-blockers in pregnancy?
Neonatal hypoglycaemia, bradycardia and intrauterine growth restriction
Complication of NSAIDs in pregnancy?
MANY!
- Premature closure of ductus arteriosus
- Persistent pulmonary hypertension of the child
- Reduced placental blood flow
- Prolonged labour
When does physiological jaundice in newborns usually develops and when does it usually disappear?
2-7 days, usually clears by 10 days
When is jaundice pathological in newborn?
Within 24 hours of birth
When is jaundice considered prolonged in term babies?
14 days - causes inc biliary atresia, hypothyroidism, G6PD deficiency
When is jaundice considered prolonged in pre-term babies?
21 days - causes inc biliary atresia, hypothyroidism, G6PD deficiency
How is jaundice monitored to assess if action is needed? Which blood test is used? What are three outcomes?
Treatment threshold charts
Uses TOTAL BILIRUBIN LEVELS
3 outcomes:
- No action
- Phototherapy
- Exchange transfusion
A raised conjugated bilirubin in the newborn suggest the pathology originates from where?
Hepatobiliary e.g. biliary atresia