Medicine Flashcards
(291 cards)
Cor Pulmonale findings and Dx
GPE: loud P2, PSM, JVD, peripheral edema, hepatomegaly, ascitis
CXR: enlarged central pulmonary ateries and loss of retrosternal air space
ECG: right axis deviation, R BBB, RV hypertrophy, RA enlargement.
R heart catheterisation: elevated central venous pressure, RV end diastolic press and mean pulm artey press >=25mmHg
Pulmonary Thromboembolism treatment
Immediate anticoagulation unless contraindicated.
Normal pts- RIVAROXABAN(immediate action and hence no need of bridging with heparin) EXNOXAPARIN, FONDAPARINUX.
Pts with renal insufficiency- UNFRACTIONATED HEPARIN followed by WARFARIN
Pulmonary infarction S/S
Pleuritic chest pain
Hemoptysis
Bronchiectasis s/s, causes and Dx
Signs & symptoms:
Cough with daily mucopurulent sputum production
Rhinosinusitis, dyspnea, hemoptysis
Crackles, wheezing
Etiologies:
Airway obstruction (eg, cancer)
Rheumatic disease (eg, RA, Sjögren), toxic inhalation
Chronic or prior infection (eg, aspergillosis, mycobacteria)
Immunodeficiency (eg, hypogammaglobulinemia)
Congenital (eg, CF, alpha-1-antitrypsin deficiency)
Evaluation:
1. HRCT scan of the chest (needed for initial diagnosis)
2. Immunoglobulin quantification
3. CF testing, sputum culture (bacteria, fungi & mycobacteria)
4. Pulmonary function testing
Bronchiectasis due to CF findings
- Pseudomonas aeruginosa in sputum(in almost all bronchiectasis)
- Upper lung lobe involvement - bronchiectasis due to CF.
- Mutation of CF transmembrane conductance regulator gene results in DEFECTIVE CHLORIDE AND SODIUM TRANSPORT.
Asbestos exposure is seen in..
Plumbers electricians carpenters pipefitters Insultation workers plastic/rubber manufacturing Ship-building Construction
Ischemic chest pain (CAD)- type of pain
Substernal squeezing pain
Progressive dyspnoea on exertion in the setting of morbid obsesity
Obesity Hypoventilation Syndrome (OHS)
Patho of OHS
- Hypoxia or hypercapnia leads to bicarbonate retention-> decreased chloride reabsorption-> COMPENSATORY METABOLIC ALKALOSIS
- Chronic hypoxia-> pulmonary hypertension-> cor pulmonale-> PERIPHERAL EDEMA
- Chronic hypoxia -> increased erythropoietin-> COMPENSATORY ERYTHROCYTOSIS
- Chronic hypoxia-> chronic hypoventilation-> INCREASED pCO2
Pleural fluid pH
Normal: 7.60
Transudate: 7.4-7.55
Exudates: 7.30-7.45
pH <7.30 : Empyema (increased acid production by cells or bacteria)
OR
Decreased H ion efflux from pleural space ( pleuritis, tumor, pleural fibrosis)
Auscultation finding in COPD and ILD
COPD- wheezing
ILD- crackles
ARDS diagnosis
New worsening respiratory distress within 1 week of insult
CXR- b/l lung opacities
Hypoxemia with PaO2/FiO2 ratio < 300mmHg
PAP increased
Pulmonary capillary wedge press (or left atrial press) normal
ARDS treatment
Mechanical ventilation ( low TV, high PEEP, high FiO2, permissive hypercapnia)
PaO2: 55-80mmHg (SpO2: >88-95%)
Central Respiratory Depression Dx & TX
ABG- primary respiratory acidosis( low pH and high PaCO2)
TX- increase minute ventilation ( mainly by increasing the respiratory rate)
Diagnostic tests for pulmonary embolism
- CT angiography of chest
- Ventilation- Perfusion scan (alternate to CTA)
- transthoracic ECHO
- D-diner assay
COPD Tx
Smoking cessation Supplemental O2 Inhaled bronchodilators (Ipatropium and Tiotropium) Anti-muscarinic agents + SABA(albuterol) Inhaled steroids LABA Lung reduction Surgery
Reactivation of latent TB finding
CXR- apical cavitatory lesion
Chronic low grade fever, nigh sweats, WY loss, cough with blood tinged sputum
Aspiration pneumonia findings
Fever, cough
Leukocytosis
CXR- lobar infiltrates
Difference between Chr Bronchitis and Emphysema
Bronchitis:
DLCO- normal
CXR- prominent bronchovascular markings and mildly flattened diaphragm
Emphysema:
DLCO- decreased
CXR- decreased vascular markings and hyperinflated lungs
Hypoxemia is more in bronchitis
Pneumothorax findings
Hyper resonance to percussion
Diminished breath sounds
Decreased tactile fremitis
Hypotension (decreased venous return)
Criteria for initiation of Long term supplemental oxygen therapy (LTOT)
Resting PaO2 55%
Histoplasma capsulatum findings
H/o exposure to bird/bats
CXR- mediastinal hilar lymphadenopathy with focal reticulonodular/miliary infiltrates
Dx- histoplasma antigen testing of urine or blood
Serology
Tissue diagnosis- granulomas with narrow based budding yeasts
Hypersensitivity pneumonitis (Bird Fanciers disease) h/o and Dx
CXR- ground glass opacities/ haziness of lower lung fields
H/o bird or mould exposure which usually resolves within 24 hours
Acute exacerbation of COPD findings and Dx
Change in >=1 of the following:
- cough severity /frequency
- sputum volume/ character
- level of dyspnea
GPE- wheezing, tachypnea, prolonged expiration, use of accessory muscles, JVD(during expiration)
CXR- hyperinflation