wk6 Thoracic surgery Flashcards
Conditions presenting for lung resection
Lung Caner - small cells (20%), Non small Cells (mostly), Metastatic tumor, Pleural tumours
Carcinoma
Significant pulmonary disorder - bronchiectasis, emphysematous bullae
Oesophageal problems - cancer, hiatus herniation
Trauma
Causes of lung cancer
Smoking/ passive smoking Cannabis consumption (Marijuana) occupational hazards or materials e.g. toxic chem Atmospheric pollutants Genetic predisposition Metastatic disease
Prevalence of lung cancer in NZ
NZ Maori - 3 times higher than non-Maori
Mortality rate is also 2times higher than non-Maori (Euro)
5 year survival rate (poor compared to other developed)
5th leading cause of death world wide
Signs and symptoms of lung cancer
persistent cough sputum haemoptysis (blood clot expectoration) Dyspnoea chest pain Stridor - monophonic wheeze Wheeze Lymph node involvement Collapse/consolidation/effusion Hoarseness
Franky Haemoptysis
blood without sputum when cough
Stridor - monophonic wheeze
unchanging pitch sound due to obstruction in the airways
can involve in trachea or main bronchi
If trachea is affected, then can’t do surgery but can do surgery if bronchi is affected –> pneumonectomy
Hoarseness
weak vocal sound such as husky, breathy
Investigative Procedure
*currently no routine screening
*confirmation clinical diagnosis includes…
-sputum cytology & bronchial washings
-bronchoscopty & biopsy
-thoracoscopy
- PET scanning (positive emission) - uptake glucose –>show as bright
CT/MRI/CXR
Blood profiles
Evidence of metastatic spread –> BAD prognosis –> no point of having surgery
LUNG cancer staging - NMT
N: represents the lymph NODES involved by metastasis from the lung tumour
M: describes whether spread to other organs has occured - METASTASIS
T: represents the size of the TUMOR
Lung cancer staging - Stage 1 - 4
1- No metastasis / no node involvement / local tumor -75% survival rate post surgery
- Hilia lymph node involvement/ no distal metastasis/ 3cm or lager tumor - 10-20% survival
- mediastinal node on same side. Advanced node involvement - operable depending on site and spread
- Distal metastasis. Can’t do surgery
Treatment for lung cancer
surgery - lobectomy or pneumonectomy
Incision Types
- Key hole/scopic (VATS-video assisted thoraco surgery)
- minimal access
- open thoracotomy
Advantage of key hole/ VATS thoracotomy
Px can up and moving very quickly post op compared to ‘open thoracotomy’
Better function & less pain
What type of incision need for Lobectomy and Pneumonectomy
Small incision is enough for Lobectomy
Have to do big Open incision for Pneumonectomy
Muscles transected include…
Latissimus Dorsi Serratus Ant Trapezius Intercostals Pec Major and Minor