passmed :) Flashcards

1
Q

what are the macroscopic and microscopic and biochemical changes in alzheimers disease?

A

macroscopic: widespread cerebral atrophy, particularly involving the cortex and hippocampus
microscopic: cortical plaques due to deposition of type A-Beta-amyloid protein and intraneuronal neurofibrillary tangles caused by abnormal aggregation of the tau protein. Hyperphosphorylation of the tau protein has been linked to AD
biochemical: there is a deficit of acetylcholine from damage to an ascending forebrain projection

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2
Q

what antipsychotic should be avoided in parkinsons?

A

haloperidol - it is a dopamine antagonist

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3
Q

what antidepressant should not be used in those with Alzheimer’s?

A

. One example of this is the use of tricyclic antidepressants in patients with dementia, due to the risk of worsening cognitive impairment.

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4
Q

what levels of drop in BP count as postural hypertension?

A

a. A drop in systolic BP of 20mmHg or more (with or without symptoms)
b. A drop to below 90mmHg on standing even if the drop is less than 20mmHg (with or without symptoms)
c. A drop in diastolic BP of 10mmHg with symptoms (although clinically much less significant than a drop in systolic BP).

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5
Q

what score is used to assess pressure sores?

A

waterlow score

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6
Q

what is the action of memantine and when is it used?

A

NMDA receptor antagonist

used in Alzheimer’s

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7
Q

what are the features of acute fatty liver of pregnancy?

A
abdominal pain
nausea & vomiting
headache
jaundice
hypoglycaemia
severe disease may result in pre-eclampsia
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8
Q

what are the features of cholestasis of pregnancy?

A
pruritus, often in the palms and soles
no rash (although skin changes may be seen due to scratching)
raised bilirubin
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9
Q

what is the RMI and what are the three components?

A

RMI is a pre-surgical prognostic criteria

it is based on CA125 levels, menopausal status and US findings

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10
Q

what cancers does the combined oral contraceptive pill increase and decrease the risk of?

A

increases risk of breast and cervical cancer

protective against ovarian and endometrial cancer

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11
Q

how are fibroids managed if fertility is wanted?

A

myomectomy

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12
Q

A 19-year-old woman who is 9 weeks into her first pregnancy is seen in the early pregnancy assessment unit with vaginal bleeding. Her ultrasound scan confirms a viable intrauterine pregnancy. However, the high vaginal swab has isolated group B streptococcus (GBS). How should she be managed?

A

intrapartum IV benzylpenicllin

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13
Q

where is an ectopic pregnancy likely to occur?

A

the isthmus of the fallopisan tube

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14
Q

how should you manage a woman who has come into contact with chickenpox for the first time in pregncny?

A

varicella zoster immunoglobulin

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15
Q

what is tranexamic acid used for?

A

heavy menstrual bleeding

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16
Q

how should dysmenorrhoea be managed?

A

mefenamic acid

17
Q

what is an absolute contraindication to caesarean section?

A

previous vertical caesarean scar

18
Q

A 35-year-old obese gravida 3 para 2 has developed a swollen and tender left leg; she is currently at 32 weeks of gestation and started on the appropriate treatment regimen. Due to her weight, the clinician decides to monitor her treatment with a specific blood test. Which blood test is this?

A

Anti-Xa activity

The guidance states that: ‘In clinically suspected DVT or PE, treatment with low-molecular-weight heparin (LMWH) should be commenced immediately until the diagnosis is excluded by objective testing, unless treatment is strongly contraindicated.’

The guidance also states that: ‘Routine measurement of peak anti-Xa activity for patients on LMWH for treatment of acute VTE in pregnancy or postpartum is not recommended except in women at extremes of body weight (less than 50 kg and 90 kg or more) or with other complicating factors (for example, with renal impairment or recurrent VTE).’ and that ‘Routine platelet count monitoring should not be carried out.’

19
Q

how do you medically manage a miscarriage?

A

misoprostol

20
Q

what is laryngomalacia and how does it present?

A

Laryngomalacia is a very common, benign cause of noisy breathing in infants
Laryngomalacia should be suspected in an otherwise well infant with noisy breathing. It is caused by a congenital softening of the cartilage of the larynx, causing collapse during inspiration. Laryngomalacia can present at birth, and worsens in the first few weeks of life. It usually self-resolves before 2 years of age.

21
Q

when a child is on Ritalin (Methylphenidate) what do you need to monitor?

A

Methylphenidate, a stimulant, may suppress appetite and cause growth impairment in children. It is advised to monitor growth as well as blood pressure and pulse in these patients on a regular basis.

22
Q

what score is used to assess the health of a new born baby?

A

apgar

23
Q

You are working in a busy emergency department. A worried mother brings her 3-year-old boy to see you. He has been crying excessively for the last 12 hours and has had bilious vomiting on multiple occasions. The boy passed one stool around 2 hours ago which contained small amounts of blood.

With the patients likely diagnosis what initial investigation would you do?

A

Ultrasound is the investigation of choice for intussusception

24
Q

when should you consider pneumonia in children?

A

Consider a diagnosis of pneumonia if the child has:
high fever (over 39°C) and/or
persistently focal crackles.

25
Q

what is a poor prognostic factor in congenital diaphragmatic hernias?

A

the presence of the liver in the thoracic cavity

26
Q

where is the most common location for a hypospadias to occur?

A

distal, ventral surface of the penis

27
Q

what are the major risk factors for sudden infant death syndrome?

A
prone sleeping
parental smoking
bed-sharing
hyperthermia and head covering
prematurity
28
Q

when do you see a strawberry tongue?

A

scarlet fever

kawasaki

29
Q

what are the features of pyloric stensosis?

A

‘projectile’ vomiting, typically 30 minutes after a feed
constipation and dehydration may also be present
a palpable mass may be present in the upper abdomen
hypochloraemic, hypokalaemic alkalosis due to persistent vomiting

30
Q

how is coeliac disease diagnosed?

A

IgA TTG antibodies

31
Q

what is the emergency treatment of croup?

A

high-flow oxygen

nebulised adrenaline

32
Q

what are the signs of normal pressure hydrocephalus?

A

wet wacky and wobbly
urinary incontinence
dementia
gait abnormality - ataxia

33
Q

what is a bartholins cyst and how is it managed?

A

Bartholin’s glands are a pair of glands located next to the entrance to the vagina. These are normally about the size of a pea, but can become infected and enlarge - forming a Bartholin’s abscess.

This can be treated by antibiotics, by the insertion of a word catheter or by a surgical procedure known as marsupialization.

34
Q

how long should children be excluded from school if they have whooping cough?

A

A child with whooping cough should be excluded from school for 48 hours following commencement of antibiotics

35
Q

what are the symptoms spontaneous intracranial hypotension?

A

Spontaneous intracranial hypotension

Spontaneous intracranial hypotension is a very rare cause of headaches that results from a CSF leak. The leak is typically from the thoracic nerve root sleeves.

Risk factors include connective tissue disorders such as Marfan’s syndrome.

Key features
strong postural relationship with the headache generally much worse when upright. Patients may, therefore, be bed-bound

Investigations
MRI with gadolinium: typically shows pachymeningeal enhancement

Management
usually conservative
if this fails an epidural blood patch may be tried