Random Crap I Should Know Flashcards

1
Q

Child-Pugh score

A

Each 1-3 points.
Used to predict surgical mortality

A - 5/6;
B 7-9 points
c - >10; >50% mortality; 1 year survival 45%, 2yr 33%

Bilirubin 50
Albumin (g/l) >35, 30-35, 2.3
Encephalopathy none, grade 1-2, grade 3-4
Ascites none, moderate, marked

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2
Q

Sarcoidosis is;

A

A multi system granulomatous disease that causes non caseating granulomas in involved organs

Lung disease in 50 %; restrictive or obstructive picture, skin issues, laryngeal sarcoid, may have mediastinal mass

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3
Q

SLE is;

A

A chronic autoimmune inflammatory condition

Pericarditis, libman-Sachs endocarditis, accelerated CAD
Pulm HTN, interstitial lung disease, risk of PE
Small vessel vasculitus
Renal involvement
Joint issues in 90%
High risk thromboembolic events

May be on steroids

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4
Q

Signs of an innocent murmur in a child

A
Clinically well, growing normally, feeding normally
Pulses are normal
No history of recurrent chest infection
Murmur is;
Soft
EarlySystolic or continuous 
Often varies with posture 
No thrill
Quality - blowing, musical
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5
Q

Nerves to block for scalp block

A
7 paired nerves;
Supraorbital - V1
Supratroachlear - V1
Zygomaticotemporal - V2
Auriculotemporal - V3
Lesser occipital - cn2/3
Greater occipital - cn2
Greater auricular - cn2/3
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6
Q

Non technical skills

A

Situational awareness
Team working
Task management
Decision making

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7
Q

Effects of quitting smoking

A

1 day - HbCO levels and nicotine levels lower; better oxygen delivery
3 weeks - improved wound healing
6-8 weeks - sputum volume not > than non smokers, improved pulmonary function
>6/12 - improved immune function

Ask, advise, refer

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8
Q

Classification of equipment;

A

Critical - will penetrate skin, mucous membranes, enter vascular system. Must be sterilised.

Semi-critical - will be in contact with intact mucous membranes or be contaminated with readily transmissible organisms. Need high level disinfection or sterilisation.

Non-critical - intact skin, or no direct patient contact. Low level disinfection or cleaning.

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9
Q

Hand hygiene solution contains;

A

2-4% chlorhex and 60-95% alcohol

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10
Q

Classification of equipment re cleaning;

C = critical
SC = semi critical
NC = non critical
A

Face mask - SC
Laryngoscope - c
Bougie - c
Breathing systems - used for more than one patient if bacterial filter used
Sampling line - need viral filter
Surfaces/monitor - cleaned between each patient with detergent and water
Flexible bronch - C
Ultrasound - will depend on what used for; NC use, just clean; SC use - use a cover; critical use will need high level disinfectiono

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11
Q

Definitions asepsis, disinfection, sterilisation

A

Asepsis - prevention of microbial contamination of living tissues or sterile materials

Disinfection - inactivation of non-sporting organisms using thermal or chemical means

Sterilisation - compete destruction of all microorganisms including spores

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12
Q

Systemic sclerosis;

A

Immune activation, vascular damage and deposition of collagen

Classified as;
limited cutaneous - hands/face and CREST
Diffuse cutaneous - risk of renal, lung, CVS disease

Develop -
Myocarditis and conduction abnormalities
Pulmonary fibrosis and HTN
Chronic renal failure
Oesophageal hypomotility
Thick skin - difficult iv access
Limited mouth opening
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13
Q

ETT size for children;

Depth;

Size of LMA

A

Age/4 +4

Age/2 + 12

LMA - on packaging
1, 5kg
1.5 5-10kg
2 10-20kg
2.5 20-30
3 >30kg
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14
Q

Assessment before any procedure;

A

Simple!

Consent
Iv access
Monitoring
Position
Local anaesthetic
Evaluate
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15
Q

Active cardiac conditions

A

Unstable coronary syndromes (Mi last 30 days, CCS 3 or 4)
Dulecompensated failure
Severe valve disease
Significant arrhythmias

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16
Q

Drugs that raise PVR

A

Nitrous
Ketamine
Protamine

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17
Q

WHO pulm HTN classification.

A
  1. Arterial - portal HTN, shunts
  2. Venous - MR
  3. Due to respiratory disease or hypoxia
  4. Due to thrombus
  5. Due to direct vasculature changes
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18
Q

Monitoring during anaesthesia;
Required
Available
Should be available

A
Must;
O2 analyser
Sats
ETCO3
ETAA
Disconnection alarm

Clinical monitoring must occur; circulation, ventilation, oxygenation

Should;
ECG
NIBP
Temp
NMT
Available;
IBP
CVP
5lead
BID
TOE
CO monitor
Resp mechanics
19
Q

Preventive vs pre-emptive analgesia

A

Pre emptive - given before incision to try and reduce pain

Preventive - an intervention that has benefit that lasts longer than 5xt 1/2

20
Q

CRPS diagnosis

A

Vasomotor/colour
Sudomotor
Sensory
Motor

2 signs, 3 symptoms

And pain disproportionate to inciting event

21
Q

Indications for CEA;

A

Symptomatic >70% stenosis NNT 6 to reduce risk of stroke

50-69% stenosis NNT 22

Asymptomatic - absolute risk reduction 1%/year CEA vs medical management

22
Q

Bridging therapy for anticoagulation for AF;

A
CCF
HTN
Age >75
Diabetes
CVA/TiA/thromboembolism - 2
Vascular disease
Age 65-75
Sex female

Score >/= 2 - anticoag indicated
- 2% stroke risk
Score 1- discussion

Score >/=6 - bridging recommended

23
Q

Filter modes for ECG

A

Diagnostic - minimal filtering
- good representation but lots of interference
Monitor - maximal filtering
- good rhythm monitor but poor assessment of ST segments
ST segment

5 lead, V5 and 2 = highest detection of changes

24
Q

Stages of diastole;

A

Isovolumetric relaxation
Early rapid filling (E wave)
Diastasis
Late rapid filling (A wave)

Usually E:A > 1 (a only provides 30%)

Mild - reversal
Progresses with E:A >1.5 ( with pseudo normalisation in between)

25
Q

Quality assurance

A

An organised process that assesses and evaluates health services to improve practice or quality of care

Planning
Implementation
Review
Setting standards

26
Q

Classification acute renal dysfunction;

A

RIfLE

Risk creat x 1.5, u/o low 6 hours
Injury creat x 2, u/o low 12 hours
Failure creat x3, Anuria 12 hrs 
Loss - complete loss for > 4 weeks
End stage - complete loss >3/12
27
Q

CTG recording;
Early decels
Late decels
Variable decels

A

Early - head compression
Late - uteroplacental insufficiency
Variable - umbilical cord compression

28
Q

Requirements for pneumonectomy/lobectomy;

A

Lobectomy;
FEV1 >1.5L or >80% predicted
Need to be able to climb 3 flights stairs

Pneumonectomy;
FEV1 >2L
Ppo-FEV1 0.7-0.8l
Need to be able to climb 5 flights stairs - approx equal to VO2 max >20ml/kg/min 
If VO2 max
29
Q

Power supply in theatres

A

Mains power plus two levels of redundancy (white sockets = only connected to mains);
1. SPS (secondary power supply), Onsite generator (secondary power supply) - red sockets = connects to sps
This does take 15seconds or 2 mins to connect
2. Uninterrupted power - back up battery bank = dark blue power circuit

30
Q

Adverse effects of transfusion;

A
Immediate;
Febrile reaction
Allergic urticarial reaction 
Severe allergic reaction
Acute haemolytic reaction
Bacterial contamination
TRALI
Volume overload
Hypothermia
Citrate toxicity
Potassium effects
Delayed;
Delayed haemolysis
Alloimmunisation
Transfusion associated graft vs host
Immunomondulatory effects
Iron accumulation
Infectious disease transmission
31
Q

Block for lower leg surgery;

A

Sciatic nerve;
Find popliteal artery with probe under leg.
Tibial nerve lateral to it.
Common peroneal is superficial to the tibial.
They join together usually 5-10cm from knee crease.

Saphenous nerve; branch of femoral.
Supplies medial aspect
Lies medial to femoral artery, below sartorius muscle

32
Q

How does aortic Doppler estimate cardiac output;

A

CO = VTI x CSA x HR

VTI - velocity-time index
- calculated using descending aortic flow -> velocity time curve -> AUC

CSA - cross sectional area, use USS or algorhythm

33
Q

Grades of murmur

A

1 listen carefully
2 soft but heard readily
3 easily heard immediately
4 thrill and loud
5 thrill heard with just rim touching chest
6 thrill audible with stethoscope off chest wall

34
Q

Values of ejection fraction

A

Normal >55%
Mildly impaired 45-54%
Moderate 30-44%
Severely impaired

35
Q

Nerves of lumbar plexus

A
Iliohypogastric
Ilioingiinal
Genitofemoral
Lateral femoral cutaneous
Femoral
Obituarator

T12-L4

36
Q

Pre-thoracotomy assessment

A

Respiratory mechanics; ppoFEV1 >40% low risk
Calculated; preop FEV1 x (1- functional tissue removed/100)

Gas exchange;
DLCO ; predixted 20ml/kg/min good = 5 flights stairs
If ppoVO2 max

37
Q

Post op delirium vs POCD

A

POD- a change in mental state characterised by a reduced awareness of the environment and a disturbance in attention. Between 1-3 days post op. May be associated with hallucinations, disorientation. Increased mortality. Ketamine appears to reduce incidence.

POCD- a deterioration in cognition temporally related to surgery. Need preop neuropsychological testing to confirm. 25%. >60s at 1 week, 1% unresolved at 2 years. ? Due to micro emboli or inflammatory response.

38
Q

Pre eclamptic BP 170/110, headache proteinuria. Which not used to control hypertension;

A

Magnesium

39
Q

Commonest organism causing meningitis post spinal;

A

Strep salivarius

40
Q

Bias

A

Systematic deviation from the truth

Selection - use random allocation, clear inclusion/exclusion criteria
Performance - ensure blinding
Measurement - standard measure
Attrition - due to withdrawal - assess using intention to treat
Reporting - all results reported
Publication - negative studies published

41
Q

Systematic review

A

Formal process

Involves identification, appraisal and evaluation

Used to draw conclusions about a specific issue

Includes;
Literature review using clearly defined and reproducible search criteria
Faster and cheaper than reexamination
Can include large and small studies

Meta analysis (statistical analysis) can then provide level one evidence

42
Q

How to determine sample size

A

Alpha error - probability of committing type 1 error

Beta - probability of committing type 2 error

Effect size - small differences harder to detect

Variance - increased variance needs bigger numbers

Test statistic - how sensitive is the test

43
Q

Trauma induced coagulopathy

A

Due to; depletion, dysfunction and dilution

Exacerbated by; hypothermia, acidosis, fluid resus

Characterised by;
Factor five inhibition 
Low fibrinogen
Systemic anticoagulation
Impaired platelet function
Management;
Early detection
MBT protocol
Prevent hypothermia and treat acidosis
Use TXA and calcium
Consider factor 7