A-E for specific emergencies Flashcards
Initial management of ACS
MONAC
- Morphine - 10mg in 10mL slowly IV (+ metoclopramide IV)
- Oxygen - if outside 94-98% target
- Nitrates - sublingual GTN/2sprays
- Aspirin - 200mg PI loading dose (then 74mg OD)
- Clopidogrel: 300-600mg PO loading dose (then 75mg OD) ; if undergoing PCI, preferred if prasugrel (1 dose of 60mg PO, then 10mg OD)
+ refer to cardiology for reperfusion if indicated
Indications for PCI
- emergency: STEMI (any amount of ST elevation/ new LBBB)
- urgent: NSTEMI; unstable angina
Short term management ACS for
(1) ST elevation
(2) non-ST elevation
(3) all
(1) reperfusion therapy - PCI
(2) stabilize medically and admit for cardio review - high risk (raised troponin/persistent pain/ST depression/diabetics) = semi-elective/urgent
(3)
- ACS-specific LMWH 5/7 + hospital protocol for VTE prophylaxis
- admit 4-7 days (testing cardiac enzymes + investigation +/- reperfusion)
- start some of the long term meds - B-blocker (reduces myocardial demand); ACEi btw 6-24hrs after an MI or LVF (prevents cardiac remodelling)
- correct eletrolytes
ACS-specific LMWH
- subcut fondaparinux 2.5mg OD or
- enoxaparin 1mg/kh
if PCI planned <24hrs (in a STEMI) unfractionated heparin)
Findings - ACS
- ECG - ST elevation/new LBBB, inverted T waves, Q waves
- Troponin - increased (in unstable angina is N)
- CXR - normal +/- HF
Definitive test - ACS
coronary angiography - see occlusion
Classical history - ACS
- crushing central chest pain
- radiation to neck/left arm
- A/w nausea/SOB/sweating
- CVD risk factors
Signs - tension pneumothorax
- Resp distress - incr WOB
- tachycardia, hypotension, hypoxia
- tracheal deviation to OPPOSITE side
- incr percussion note + absent breath sounds on affected side
Initial management - tension pneumothorax
Needle thoracostomy
- Confirm side
- Sterility
- 14-16G (orange/grey) IV cannula + 10mL syringe
- second intercostal space; mid clavicular line at 90degrees, anove 3rd rib
- once air is aspirated, advance cannula (tube not needle) + secure with tape
= now a simple pneumothorax
Definitive management pneumothorax
chest drain
Classical history - pneumothorax
- sudden onset pleuritic chest pain
- may be SOB
- risk factors = Marfan’s appearance, COPD/asthma
Signs - simple pneumothorax
ispilateral
- reduced chest expansion
- absent breath sounds
- hyperresonance
management simple pneumothorax
1ry - <2cm - CXR monitoring - > 2cm or Sx - aspirate 2ry - <1cm - observe 24hrs - 1-2cm - aspirate - >2cm or Sx - chest drain
Classic presentation - arrhythmia
- fall after transient arrhythmia
- +/- palpitations or ‘feeling strange’ prior to collapse
- cardiac PMH or FHX of sudden death
- during exercise or when supine
Initial management - arrhythmia
- no pulse: cardiac arrests ALS algorithm
- any adverse signs +
tachy -> synchronised DC cardioversion
brady -> atropine +/- pacing - no adverse signs - according to type of arrhytmia
all
- apply defibrillator’s 3-lead cardiac monitoring
- treat reversible causes (electrolyte abnormalities)
- Review 12 lead ECG to find cause
Adverse signs in arrhythmias
- shock (SBP<90)
- Syncope
- Myocardial ischaemia (chest pain)
- Heart failure
Initial management - sinus tachycardia
1- treat cause
2- if necessary = beta blocker or rate-limiting Ca2+ channel blocker (verapamil)
Initial management - First onset AF
Life-threatening haemodynamic instability: emergency electric cardioversion
Non-life-threatening haem instability
- <48hrs rate or rhythm control
- > 48hrs/unknown/risk factors (>65 + IHD/no sx) - rate control (b-blocker or verapamil IV)
Pharmacological cardioversion
IV amiodarone hydrochloride
- 1st - 5mg/kg over 20-120mins / ECG monitoring
- max 1.2g/day
Define ‘paroxysmal’ SVTs
= narrow complex tachy + regular (no/abnormal P waves)
Initial management - ‘Paroxysmal’ SVT
1st - 3rd line
1st - vagal manoevres
2nd - IV adenosine 6mg (if asthma use CCB)
3rd - B blocker
Define - Atrial fibrillation
irregular with no P waves
Define - Atrial flutter
regular with sawtooth baseline
Initial management - atrial fibrillation or flutter
1- treat cause
2a - if >65yr + IHD/no Sx/not suitable for cardioversion => b-blocker or rate-limiting CCB (digoxin if sedentary)
2b - if not above + clear onset <48hrs => electrical DC cardioversion or pharmacological (flecanide or amiodarone if structural heart disease)
3- reduce thromboemoblic risk if not cardioverted - LMWH/warfarin
ECG features of VT
- rapid HR >100
- regular
- uniform QRS in each lead
- V broad QRS >160ms
- AV dissociation (P and QRS at different rates)
= looks like mostly up and down waves u
ECG Features of polymorphic VT (Torsade de pointes)
VT with varying amplitude
ECG features of broad complex tachy of supraventricular origin
- Mimics VT
- pre-existing BBB/WPW
- more likely if irregular QRS
Define - sustained VT
> 30 secs
Initial treatment - Sustained VT
pharmacological cardioversion
= amiodarone
Initial treatment polymorphic VT / torsades de pointes
magnesium sulphate
Initial management - broad complex tachycardia of supraventricular origin
not sure if SVT origin or VT = treat as VT (amiodarone
1a - SVT or AF w/ BBB = treat as AF (treat cause, rate control if old, rhythm control if young - amioderone)
1b - SVT or AF with pre-excitation syndrome = amiodarone
Causes - Bradycardia`
AV hear block
Sinus brady
- extrinsic = drugs (B-blockers, ditialis), neural syndromes (carotid sinus hypersensitivity, vaso-vagal syncope), hypothermia, hypothyroid
- intrinsic = ischaemia/infarct of SA node; fibrosis of artium and SA node
Adverse signs or risk of asystole in bradycardia
- Mobitz II (unpredictable dropping QRS)
- Complete heart block (no connection btw P and QRS) + broad QRS
- Ventricular pauses > 3 secs
- Recent asystole
management of bradycardia
1- treat cause
2- haemodynamic instability/.risk of asystole - atropine; if continues get transvenous pacing (interim - further atropine + transcutaneous pacing)
3- haemodynamically stable+ no risk of asystole - observe
4- permanent pacing = Mobitz type II, 3rd degree HB
Adenosine
a- indication
b- Dose + route
a- reverting to sinus rhythm in paroxysmal supraventricular tachycardia
b. 6mg IV blous flushed quickly, followed by another 12mg x 2
Amiodarone
a. indication
b. dose + route
c. total dose/day
a. pharmacological cardioversion in structural heart disease - in SVT, V fib, VT
b. (cardioversion_ 300mg IV over 20-60min
c. 1.2g over 24hrs
Atropine
a. indication
b. dose + route + frequency
c. max dose
a. reverting to sinus from bradycardia
b. 500mcg IV + repreat every 3-5min
c. max 3mg needed
Magnesium sulphate
a. indication
b. dose + route
c. max
a. Torsades de pointes - VT with varying amplitudes
b. 2g IV over 10-15mins
c. repeated once if necessary
equipment set up in arrhythmias
- 3-lead cardiac monitoring (Ride Your Green Bike) = Red on right shoulder, Yellow on left shoulder, Green on ASIS, Black not on defib machines
- defib pads - Right - longitudinally on left sternal edge; left - longitufinally on left paraspinal muscles (in line w/ each other)
defib settings in broad complex tacgt ir AF
- synchronised mode
- 150J -> 200J –> 200 J
- biphasic
defib settings in narrow complex tachy of afib
- synchronised mode
- 70J –> 120J –> 200J
- biphasic
Classify - Life threatening asthma
33, 92 CHEST
- PEFR <33% predicted/baseline
- <92% sats
- Cyanosis
- Hypotension
- Exhaustion
- Silent chest
- Tachycardia
Classify - Severe asthma
- PEFR 33-50% predicted/baseline
- can’t complete sentences
- RR >25
- HR> 110
Initial management - ashtma attack
O SHIT ME! Oxygen - oxygen driven nebs Salbutamol - 2.5-5mg NEB Hydrocortisone 100mg IV (or pred 40mg PO) Ipratropium - 500mcg NEB Theophylline- aminophylline infusion 1g in 1L saline 0.5ml/kg/h Magnesium sulphate - 2g IV over 10 mins Escalate care (intubation/ventilation)
Describe - back to back nebs in asthma
5-10mg/ hr salbutamol neb
ipratropium 4-6 hrly
When to escalate asthma attack
if not responding to nebulized treatment (needing any IV)
Initial management COPD
- O SHIT ME as per asthma but O2 in 24-28% venturi mask
- ABG after 15 mins O2 ot determine further ventilation
- consider NIV
- antibiotics as per guidance (i.e doxycycline 10mmg OD)
- 5/7 prednisolone 30mg
- chest physio
Investigations to order - asthma attack/COPD exac
- ABG
- CXR
- Bloods - regular incl potassium monitoring
Examination findings - peritonitis
- no movement w/ respiration
- guarding
- firm, peritonitic abdomen
- rebound tenderness
- severe pain to light palpation
- percussion tenderness
Differentials - peritonitis
- perforated viscus - peptic ulcer, colonic tumour, gallbladder, appendix, spleen, ectopic
- AAA
- spontaneous bacterial peritonitis
Clinical history - peritonitis
Severe generalised abdominal pain
Investigations to order - peritonitis
- erect CXR - look for pneumoperitoneum (perf)
- urgen CT abdo/pelvis
Initial management - peritonitis
- 2 wide bore IV cannula
- fluid resus
- NBM
- Urgent laparotomy and repair
Clinical history - AAA
- severe generalised abdo pain
- back pain
- reduced GCS/collapse
- elderly
Examination findings - AAA
- hypotension
- peritonitis
- expansile mass
Management - AAA
- super urgent vasc referral and surgery
- only CT is stable
clinical history renal colic
- spasms/loin to groin pain
- nausea and vomiting
- cannot lie still