Clinical Questions Flashcards
Definition of acute pulmonary oedema
Rapid buildup of fluid in the alveoli and interstitium that has extravasated out of the pulmonary circulation, imparing gas exchange and lung compliance
Primary survey acute pulmonary oedema
Look at pt and assess if sick patient - sweaty, nauseated, anxious. Ask for obs and any nursing investigations already done, e.g. urine dip and ecg. Consider calling for help.
A - nil
B
-LOOK:
severely breathless
dry or pink, frothy cough
sitting upright/several pillows [Paroxysmal nocturnal dyspnoea or orthopnoea]
cyanosis
-FEEL
nil
-LISTEN:
Fine crackles- widespread or basal
-MEASURE
Sats <90% room air
Tachypnoea
ABG
CXR
-DO
15L high flow oxygen through a non rebreathe mask
C
-LOOK
Congested neck veins
Raised JVP
-FEEL
Weak pulse
-LISTEN
Gallop rhythm (3rd heart sound)
-MEASURE
Hypotensive (or hypertensive if SNS), tachycardic
ECG
Catheterise (oliguric)
Bloods: FBC, renal function, electrolytes, glucose, cardiac enzymes, LFTs, clotting, BNP, TFTs
-DO
Obtain intravenous access and give
Nitrates if SBP>90 (2spray GTN or 1-3mg isosorbide dinitrate)
Diuretic: 20-40mg slow I.V furosemide (transient venodilation)
Thromboembolic prophylaxis
D - nil
E - hepatomegaly, peripheral oedema
Causes of acute pulmonary oedema
Cardiogenic:
- Left ventricular failure (ACS, arrythmia, pericarditis, endocarditis, myocarditis, valve dysfunction)
- Increased intravascular volume (fluid overload, renal failure)
- Pulmonary venous outflow obstruction (mitral valve stenosis)
Non-cardiogenic
- High output (sepsis, anaemia, thyrotoxicosis)
- Vascular permeability (pancreatitis, eclampsia, DIC, burns)
- Environment (High altitude, downing)
- Other (head injury, drugs, PE)
Definition of acute heart failure
Acute decompensated heart failure is a life-threatening condition on a background of chronic heart failure where the heart function suddenly and severely deteriorates. Both pulmonary and systemic congestion are common findings.
Heart failure is when the heart fails to maintain blood flow to meet metabolic demand.
30-day mortality is 15% in those with NT-proBNP>5000ng/L and 5% in those with NT-proBNP<5000ng/L
Can rule out HF if NT-proBNP<300 (BNP<100)
Patients with heart failure should generally be discharged from hospital only when their clinical condition is stable and the management plan is optimised.
Primary survey acute heart failure
Look at pt for a sense of whether this is a sick patient. Ask for obs and any nursing investigations already done, e.g. urine dip and ecg. Consider calling for help - if cardiogenic shock, may require continuous heart monitoring (classically HDU).
A - nil
B
-LOOK:
severely breathless
dry or pink, frothy cough
sitting upright/several pillows [Paroxysmal nocturnal dyspnoea or orthopnoea]
cyanosis
-FEEL
nil
-LISTEN:
Fine crackles- widespread or basal
-MEASURE
Sats <90% room air
Tachypnoea
ABG
CXR
-DO
15L high flow oxygen through a non rebreathe mask
Cardiogenic pulmonary oedema + severe dyspnoea + acidaemia is an indication to call for senior to provide CPAP
C
-LOOK
Congested neck veins
Raised JVP
-FEEL
Weak pulse
-LISTEN
Gallop rhythm (3rd heart sound)
-MEASURE
Hypotensive (or hypertensive if SNS), tachycardic
ECG
Catheterise (oliguric)
Bloods: FBC, renal function, electrolytes, glucose, cardiac enzymes, LFTs, clotting, BNP, TFTs
-DO
Obtain intravenous access and give
Nitrates if SBP>90 and in hospital (2spray GTN or 1-3mg isosorbide dinitrate sublingual)
Diuretic: 40mg slow I.V furosemide (transient venodilation)
Thromboembolic prophylaxis
D - nil
E - hepatomegaly, peripheral oedema
When pt is stabilised, will need medications:
ACEI - reduce peripheral vascular resistance, myocardial remodelling
Beta blocker - slow heart rate to improve perfusion and increase end diastolic volume
Spironolactone - aldosterone antagonist (RALES study)
Diuretic -symptomatic
Consider surgical treatment of some precipitants e.g. severe aortic stenosis
SBAR handover for pulmonary oedema/ Acute decompensated heart failure
Situation: name of nurse, name of patient, ward, age, concern
Background: reason for admission, comorbidities including heart disease, renal failure, thyroid disease, treatment in hospital (including recent i.v. fluids and drugs taking), most recent obs and trend
Assessment: what is nurse’s main concern
Recommendation: does the nurse have a sense of how urgent? reassure that I am on the way, if pt deteriorates call 2222 for periarrest, retake obs, catheter and urine dip, ECG. Have notes and drug chart at bedside. Stop CCB and NSAIDs (removing beta blockers is assoc. with increased mortality - propensity dependent?)
Cause of acute decompensated heart failure
Chronic HF + Infection (e.g. IECOPD), MI, non compliance with medications, uncontrolled HTN, arrhythmia, renal failure, DM, anaemia, CCBs
No HF + Cardiac disease (MI, arrhythmias, valvular disease, cardiomyopathy), vascular (HTN)
Definition of coma
Unrousable unresponsiveness
Causes of coma
Metabolic: toxins (CO, ETOH, TCA), glucose dysregulation, hypoxia, co2 narcosis, septicaemia, hypothermia, myxoedema, addisonian crisis, hepatic/uraemic encephalopathy
Neurological: trauma, infection, vascular (clot or bleed), epilepsy
Primary assessment for coma
Find nurse, ask for all obs and ECG, tell me when done
D - remove any dangers
R - assess response by AVPU (pain by sternal rub)
2222 CRASH CALL
Lay bed flat, stabilise C-spine if hx of trauma
A
-LOOK
look inside mouth for obstructions and suction if found
-FEEL
for air on cheek, simultaneously look for chest rise
-LISTEN
stridor, snoring, gurgling
-MANAGE
with need for c-spine stabilisation, oropharyngeal and nasopharyngeal airways may give least displacement (guedel)
B
-LOOK:
airway central? cyanosis, chest rises/spontaneous breathing
-FEEL
for expansion
-LISTEN:
for symmetrical breath sounds
-MEASURE
Sats <90% room air
RR
ABG
-DO
15L high flow oxygen through a non rebreathe mask if spontaneous breathing and put in recovery position, if no RR begin 30:2 chest compressions and bag valve mask ventilation + adrenaline every 3-5 mins. If enough people, assess rhythm and consider defibrillator for VT/VF
C
-LOOK
Colour, fluid volume status whilst...
-FEEL
Pulse
-LISTEN
Heart sounds
-MEASURE
BP
HR
ECG
Bloods: FBC, renal function, liver function, clotting, glucose, blood culture
-DO
Obtain intravenous access and give
I.V pabrinex
I.V glucose
i.V naloxone or flumazenil if likely to be toxic
D - pupils, glucose consider CT head
E - expose and collect ID, medical jewellery
Reversible causes cardiac arrest
Hypoxia
Hypovolaemia
Hypothermia
Hypo/hyperkalaemia
Tension pneumothorax
Thrombosis (PE)
Tamponade
Toxins
Diagnosis anaphylaxis
A - airway angioedema, stridor
B - wheeze
C - tachycardia, hypotension, clammy and pale
D - anxiety, confusion, sense of doom, decreased conciousness
E - urticaria, itching, swelling, watering eyes, abdominal cramps, nausea, vomiting, diarrhoea
Anaphylaxis is likely when the following 3 are present
- sudden onset, rapid progression
- life threatening A, B or C problem
- Skin or mucosal changes
Blood tests for anaphlaxis
Timed mast cell tryptase (preferably at 2hrs, none at 4hrs fom symptom onset)
What is in a renal profile?
Urea Creatine Sodium Potasisum Chloride Bicarbonate
From this, various limits can be worked out:
eGFR (less accurate in high and low GFR states)
Urea-creatine ratio
Anion gap
Causes of a raised urea
Pre-renal:
Increased hepatic production
high protein diet
gastro-intestinal haemorrhage - “protein meal”
Increased protein breakdown
trauma, major surgery, extreme starvation with muscle breakdown
Increased renal reabsorption
Reduced renal perfusion (congestive cardiac failure, shock, severe diarrhoea)
Iatrogenic
Urea infusion for it’s diuretic action, drug therapy leading to an increased production e.g. tetracyclines, corticosteroid
Renal:
any cause of acute or chronic renal failure
Post-renal:
any cause of urinary outflow obstruction
Causes of a raised creatine
There is considerable variation in the excretion of creatinine based on individual patient factors, time, and method of testing.
Is a way of measuring glomerular filtration but actually measures:
creatine production (varies on gender and race)
glomerular filtration
tubular secretion
Raised creatine may indicate renal failure
What is in a liver function test?
Alanine aminotransferase (ALT) Aspartarte aminotransferase (AST) Alkaline phosphatase (ALP) Gamma glutamyl transferase (GGT or ‘Gamma GT’)
Bilirubin
Albumin
Clotting studies, i.e. prothrombin time (PT) or international normalised ratio (INR)
Anion gap equation
= ([Na+] + [K+]) − ([Cl−] + [HCO−
3]) = 3-11 mEq/L
Raised in KULT Ketones Urea Lactate Toxins e.g. alcohol and aspirin
Arterial alveolar gradient
A-a= FiO2(Patm-Ph2o) - 1.25PaCO2 - PaO2
Room air = 150 - 1.25PaCO2 - PaO2
Medication for anaphlaxis
Adrenaline 500 micrograms 1:1000
Chloramphenamine 10 mg slow I.V
Hydrocortisone 200mg slow I.V
Don’t forget O2 and fluids
Observation for at least 6 hrs - biphasic reaction
Definition acute asthma attack
Moderate:
increasing symptoms
PEF >50–75% best or predicted
Severe - any one of: PEF 33–50% best or predicted respiratory rate ≥25/min heart rate ≥110/min inability to complete sentences in one breath
Life threatening - any one of: PEF <33% best or predicted SpO2 <92% PaO2 <8 kPa normal PaCO2 (4.6–6.0 kPa) silent chest cyanosis poor respiratory effort arrhythmia exhaustion altered conscious level hypotension
Near fatal:
Raised PaCO2 and/or requiring mechanical
ventilation with raised inflation pressures
Bloods in acute asthma attack
ABG - look at blood gases, potassium, glucose
FBC
CRP
If hypotensive, U&Es
Serum theophylline (where aminophylline is used for more than 24 hours)
Medications for asthma attack (adult doses)
Salbutamol 5 mg nebulised (remember cannot give this through non-rebreathe mask)
Ipratropium bromide 500micrograms nebulised
Oral prednisolone 50mg or I.V hydrocortisone 100mg
Consult with senior staff: Life threatening asthma - I.V magnesium sulphate 2 mg
When to do a CXR in acute asthma
- suspected pneumomediastinum or pneumothorax
- suspected consolidation
- life-threatening asthma
- failure to respond to treatment satisfactorily
- requirement for ventilation
