Respiratory Flashcards
stony dull to percuss
pleural effusion
what investigation should be done for a pleural effusion on CXR
pleural aspirate
what investigations should be done for an exudative effusion
CT
describe exudative effusion and its causes
bilateral, cloudy/bloody, protein >30 g/l, LDH> 0.6
malignancy, TB
what investigations should be done into a transudative effusion
echocardiogram, liver scan
describe a transudative effusion and what causes it
unilateral, clear, protein <30 g/l, LDH <0.6
caused by failures- heart, liver, endocrine (Hypothyroidsm, nutritional (hypoalbuminaemia)
what are the causes of a PE
DAFAF DVT Air embolism Fat embolism Amniotic fluid embolism Foreign material (PWIDS)
what are the S/S of PE
dyspnoea, tachycardia/pnoeam pleuritic chest pain, cyanosis, haemoptysis
what can cause
loud S2, hypotension, pulsus paradoxicus, elevated JVP
PE (rare)
what are the investigations for PE and what do they usually show
D Dimer (low exclude PE, high send for CTPA),
CXR (normal/ small pleural effusion),
ECG (sinus tach, right ventricular strain, RBBB),
ABG (hypoxaemia),
CTPA
V/Q
what is the treatment for an acute PE
O2
IV fluids
Thrombolysis (altepase for massive PE)
LMWH (e.g. dalteparin)
what is the long term treatment for a PE
anticoagulation, IVC filter
what are the complications of a PE
sudden death, arrhythmia, pulmonary infarct, PE, pulmonary hypertension
what is the acute management of asthma
OSHITMAN Oxygen Salbutamol Hydrocortisone IV or prednisolone PO Ipatropium (neb) Theophylline Magnesium sulfate IV
how is long term asthma managed
SABA \+ ICS (belcometasone) \+ LTRA (monteleukast) \+ LABA \+ oral prednisolone \+ theophylline
what are the parameters of mild asthma
PEFR >75%
what are the parameters of moderate asthma
PEFR <75%
what are the parameters of acute severe asthma
unable to complete sentences
RR> 25
pulse > 110
PEFR < 50%
what are the parameters of life threatening asthma
PEFR < 33% bradycardia hypotension silent chest exhaustion confusion com ABG; -PaCO2 > 5 -PaO2 < 8 or acidosis
dyspnoea that improves away from work
occupational asthma
polyphonic wheeze
asthma, COPD
what are heart failure cells
seen in alveolar spaces- macrophages that have absorbed haemosiderin, seen in chronic pulmonary oedema with associated LV failure
what is a loud P2
part of S2= A2 + P2
heart failure cells + loud P2
pulmonary hypertension
what is cor pulmonale
right sided heart failure due to pulmonary hypertension
eggshell calcification at hilar region
silicois
small numerous opacities in upper lung zones
silicosis
hilar lymphadenopathy
silicosis
snow storm X ray
sillicosis
morning head ache (hypercapnia)
COPD
what is the treatment for an exacerbation of COPD
ISOAP Ipatropium Salbutamol Oxygen Amoxicillin Prednisolone
panacinar emphysema
alpha-1-antitrypsin deficiency
centriacinar emphysema
coal dust and tobacco
what are the causes of COPD
GASES Genetics (alpha 1 antitrypsin deficiency) Air pollution Smoking Exposure (occupation) Second hand smoke exposure
what are the complications of COPD
CLIPPeR Cor pulmonale Lung cancer INfections Pneumothorax Polycythaemia (high red blood cells) e Resp failure
what is the long term treatment for COPD
SABA/ SAMA
FEV1 > 50%
LABA/LAMA
LABA + ICS
FEV1 <50%
LAMA/ LABA + ICS
LABA \+ ICS \+ LAMA
smoking cessation
O2 therapy long term
tiotropium
LAMA
when do you give antibiotics in an acute exacerbation of COPD
if increased sputum purulence
or
consolidation on CXR/ signs of pneumonia
antiobiotics for acute exacerbation of COPD
1st- amoxicillin
2nd- doxycycline
pink puffer, hypoventilating, V+Q mismatch, thin + hyperinflated
type 1 resp failure
causes of type 1 resp failure
pneumonia, PE, pulmonary oedema, fibrosing alveolitis
signs of type 1 RF
central cyanosis
treatment for Type 1 RF
O2 replacement, treat underlying cause
blue bloater, hypoventilating + V/Q mismatch, strong build + wheezy
type 2 RF
causes of type 2 resp failure
COPD, asthma, Cerebrovascular disease, opiate overdose, myaesthenia gravis, motor neurone disease
signs of type 2 RF
ABC
A flapping tremor
bounding pulse
cyanosis
treatment for type 2 resp failure
non invasive ventilationm underlying cause
symptoms of both type 1 and 2 resp failure
ABCD-F Agitation Breathlessness Confusion Drowsiness Fatigue
signs of type 1 and 2 resp failure
decreased PaO2
Complications of type 1 and 2 resp failure
Nosocomial infections (pneumonia),
Heart failure,
Arrhythmia,
Pericarditis
cannonball metastases, weight loss, haematuria
renal cell carcinoma
lung cancer at apex with horner’s syndrome
pancoast
what is horners syndrome
ptosis, sunken eye, miosis (small pupil), lack of sweating
central lung cancer in smokers, producing PTH and with keratin pearls on histology
squamous cell
role of PTH
control of Ca”+ in blood (hypercalcaemia)
central lung cancer producing ACTH with kulchitsky cells
small cell
v aggressive lung cancer
small cell
role of ACTH
mediates release of cortisol at bottom of HPA (hypothalamic pituitary adrenal) axis
what happens when cortisol is released
increases blood glucose via gluconeogenesis
cancer in the pleura with psammoma bodies
mesothelioma- asbestosis
peripheral lung cancer in non smoking women
adenocarcinoma
peripheral lung cancer with poor outcome that has anapastic cells with high cytoplasm: nucleus ration
large cell
laryngotracheobronchitits
croup
steeple sign on X-ray, child with barking cough
croup