Resp Flashcards
More common type of lung cancer
- Non small cell lung cancer = 80%
- SCLC = 20%
types of non small cell lung cancer
- adenocarcinoma
- squamous cell carcinoma
- large cell carcinoma
S+S lung cacner
- Cough
- Haemoptysis
- SOB
- Weight loss
- Supraclavicular LN
Extrapulmonary manifestations
- Recurrent laryngeal nerve palsy = hoarse voice
- Phrenic nerve palsy = SOB
- SVC obstruction = face swell, distended neck and upper chest veins = pembertons sign
- Horners = ptosis, anhidrosis, miosis, pancoast
Paraneoplastic syndromes
- SIADH = SCLC
- Cushings = SCLC
- Hypercalcaemia = squamous cell
- Lambert eaton = SCLC = antibodies against SCLC cells and calcium channels
guidelines for lung cancer 2ww
> 40 with
- clubbing
- lymphadenopathy
- recurrent chest infections
- thrombocytosis (increased plt)
- chest signs
CXR for patients over 40 who have
- 2+ unexplained sx in pt who never smoked
- 1+ unexplained sx in pt that have ever smoked or had asbestos
UE - cough, sob, chest pain, fatigue, weight loss
CXR in lung cancer
- hilar enlargement
- peripheral opacity (visible lesion)
- pleural effusion (unilateral)
- collapse
lung ca ix
- CXR
- Staging CT (contrast)
- PET CT (for mets)
- Bronchoscopy with endobrachial USS
- histology = bronchoscopy
1st line tx NSCLC
surgery
- radiotherapy can also be curative
Tx SCLC
- chemo and radio
CURB65
- Confusion
- urea >7
- RR >30
- BP <90 s or <60 d
- > 65
Atypical pneumonia treatment
- Macrolides (clarithromycin)
- fluoroquinolones (levofloxacin)
- tetracyclines (doxy)
Legionella S+S
- can cause SIADH = hyponatraemia
- urine antigen test to screen
Mycoplasma pneumoniae
- rash = erythema multiforme
- target lesions
- neuro sx in young
PCP
- Fungal pneumonia
- Immunocompromised patients = steroids
- Dry cough, SOB, night sweats
- Prophylactic co-trimoxazole
Spirometry results for obstructive disease
- FEV1 <70%
- Obstruction is slowing air passage out the lungs
Sprirometry results for restrictive
- FEV1 and FVC are equally reduced
- FEV1:FVC ratio >70%
Asthma exam finding
- Polyphonic expiratory wheeze
drugs that can worsen asthma
- BB
- NSAIDs
Asthma Ix
- Spirometry
- Reversibility testing >12% increase on testing
- FeNO >40
- Peak flow variabulity >20%
Asthma Mx
1 = SABA
2 = Inhaled corticosteroid (beclametasone)
3 = Leukotrine receptor antagonist
4 = LABA (salmeterol)
5 = MART regime
6 = increase ICS dose
ABG in acute asthma
- initially = respiratory alkalosis as a raised RR caused drop in CO2
- Normal PCo2 or low O2 = SCARY = getting tired
moderate exacerbation features asthma
- peak flow 50-75%
severe exacerbation features asthma
- peak flow 33-50%
- RR >25
- HR >110
- Can’t complete sentences
life threatening features asthma
- Peak flow <33%
- sats <92%
- PaO2 <8
- tiredness
- confusion
- Silent chest
- shock
asthma exacerbation mx
OSHITME
- Oxygen
- Salbutamol 5mg nebs 20-30mins
- Hydrocortisone=pred 40-50mg oral or 100mg H IV
- Ipratropium = 500mcg nebs
- T
- Magnesium = IV 1.2-2g
MRC dyspnoea scale for COPD
1 = SOB on strenuous
2 = SOB uphill
3 = SOB on flat
4 = SOB <100m
5 = cant leave house
spirometry in COPD
- FEV1:FVC <70%
- no response to reversibility testing
FEV1 staging for COPD
1 (mild) = FEV1 >80% predicted
2 (moderate) 50-79%
3 (severe) 30-49%
4 (V severe) <30%
Initial COPD tx
- SABA = salbutamol
- SAMA = Ip bromide
COPD Mx if no asthma/steroid response
- LABA = formoterol and LAMA = tiotropium
COPD Mx if are asthma/steroid response
LABA and ICS
Chronic bronchitis COPD
- Mucus hypersecretion and airway obstruction
Blue bloaters - Alveolar and renal hypoxia
- Increased EPO secretion = polycythaemia
- Increased renin = fluid retention
- cyanosed and bloated
Emphysema COPD
- Alveolar trapping
Pink puffers - Airway collapse on exhalation = obstruction
- Exhale slowly through pursed lips
- Increased airway pressure to prevent airway collapse
- Flushing and puffing
- Well perfused, barrel chest
final inhaler step for COPD
LABA, LAMA and ICS
when LTOT needed
- Chronic hypoxia <92%
- polycythaemia
- cyanosis
- cor pulmonale
what is cor pulmonale
- Right sided HF
- Pulmonary HTN limits RV pumping blood into pulmonary arteries
- Causes back pressure
S+S cor pulmonale
- SOB
- Oedema
- Syncope
- CHest pain
- Hypoxia and cyanosis
- Raised JVP
ABG in acute exacerbation COPD
Resp acidosis
- Low pH
- Hypoxia
- Hypercapnia
- Riased bicarb
COPD exacerbation mx
- inhalers and nebs
- steroids = pred 30mg for 5d
- abx if needed
- physio
Severe - IV aminophylline
- NIV
- ITU
when is NIV considered
- Persistent resp acidosis despite tx
- potential to recover
- acceptable to patient
what is bronchiectasis
- permanent dilation of the bronchi
- chronic cough
- continuous soutum production
- recurrent infections
Ix bronchiectasis
- culture = HI and Psued aeruginosa
- CXR - tram track opacities, ring shadows