Fracp part i exam respiratory teaching session
Download
1 / 52

FRACP Part I Exam Respiratory Teaching Session - PowerPoint PPT Presentation


  • 136 Views
  • Uploaded on

FRACP Part I Exam Respiratory Teaching Session. Past Papers Review. Options: Excessive PTHrP Secretion Increased Bone Resorpsion Increased 1,25 (OH) Vitamin D Reduced Renal Clearance Minerolocorticoid Deficiency. Hypercalcemia in Sarcoidosis.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' FRACP Part I Exam Respiratory Teaching Session' - wayne-kim


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Fracp part i exam respiratory teaching session

FRACP Part I ExamRespiratory Teaching Session

Past Papers Review


  • Options:

  • Excessive PTHrP Secretion

  • Increased Bone Resorpsion

  • Increased 1,25 (OH) Vitamin D

  • Reduced Renal Clearance

  • Minerolocorticoid Deficiency


Hypercalcemia in sarcoidosis
Hypercalcemia in Sarcoidosis

  • Hyperabsorpsion of dietary Ca occurs in 30-50% of Sarcoidosis patients

  • Excessive Ca is initially excreted in urine leading to hypercalciuria

  • 30-50% Sarcoid patients have Hypercalciuria

    • potentially can lead to nephrocalcinosis – in 50% of renal patients with renal insufficiency

    • Nephrolithiasis – 1-14%. Initial presenting sx in 4-14% of Sarcoid patients.

    • Granulomatous interstitial nephritis – most patients have systemic active sarcoid. Renal biopsy shos noncaseating granulomas, mononuclear cells, intersitital fibrosis

    • Polyuria – nephrogenic or central diabetes insipidis (Pituitary Sarcoid)

  • 10-20% have hyperalcemia – aggravated by sunlight exposure

  • Etiology

    • Increased 1,25 dihydroxyvitamin D production by Monocytes (mainly Macrophages) in lungs and lymph nodes

      • Mainly due to increased intestinal Ca absorpsion

      • Increased Bone Resorpsion

    • Excessive PTHrP also contributes

      • PTHrP is found in 85% of biopsies of granulomatous tissue


Which intervention is least likely to improve this gentleman s problems
Which intervention is least likely to improve this gentleman’s problems?

  • A. Thiazide

  • B. Avoidance of Sunlight

  • C. Restriction of Dietary Calcium

  • D. Prednisone

  • E. Reduce Dietary Oxalate


Treatment of hypercalcemia in sarcoidosis
Treatment of Hypercalcemia in Sarcoidosis gentleman’s problems?

  • Treatment Aim:

    • Reduces intestinal absorption of Ca and

    • reduce Calcitiol Synthesis

  • Restriction of Ca intake (Aim dietary Ca of < 400mg/day)

  • Reduce Oxalate intake

    • – to prevent marked increase in Oxalate absorption and hyperoxaluria which increases the risk of nephrocalcinosis

  • Eliminate Vit D supplement

  • Avoidance of sun exposure

  • Thiazide diuretic is CONTRAINDICATED in Sarcoidosis

    • Thiazide is usually used to inhibit hypercalciuria related renal stones

    • Contraindicated in Sarcoidosis – inhibition of hypercalciuria leads to aggravates underlying hypercalcemia

  • Low-dose Glucocorticoid therapy

    • inhibition of mononuclear cells and inhibition of Ca absoroption

    • 10-30mg prenisone is usually adequate in sarcoidsosi

    • Treatment response: Serum Ca falls within 2 days.

    • Full hypocalcemic response takes up to 7-10 days

  • Second Line Treatment:

    • Bisphosphone Choroquine/Hydroxycholorquine to reduce inflammatory activity of the disease


Asbestosis
Asbestosis gentleman’s problems?

  • Interstitial lung disease secondary to Asbestos exposure

  • Severity is directly proportionate the amount of asbestos bodies deposited in lung tissue

  • CT evidence of interlobular thickening. Subpleural based band like densities.

  • Basilar and Dorsal lung parenchymal interstitial changes – interlobular/ intralobular


Asbestos bodies
Asbestos bodies gentleman’s problems?


Asbestosis on ct
Asbestosis on CT gentleman’s problems?


Diagnosis of pleural tb
Diagnosis of Pleural TB gentleman’s problems?

  • Pleural Biopsy – Most sensitive test

    • Combination of histological exam + Tissue culture – Sensitivity > 90%

    • Plerual biopsy culture is 60% sensitive

    • Histological examination – Granulomatous tissue – 70% sensitive. > 6 samples – sensitivity 80%

  • Pleural Fluid Culture: 42% sensitive

  • Mantoux test – high false negative rate: up to 31% - due to suppression of sensitised T-cells

  • Sputum culture : More likely to be positive in Parenchymal disease

    • Sensitivity: 20-50%

    • Sensitivity in Patients with Parenchymal disease: 90%

    • Sensitivity in those without parenchymal disease:11 %

  • Adenosine deaminase:

    • Sensitivities: 78-95%

    • Useful as an aid to differential diagnosis – in high pretest probability, lymphocytic pleural effusion with negative microbiology on culture and histology

    • Specificity: 95%

  • Interferon- Gamma:

    • Sensitivity: 89%, Specificity 97%,

    • Positive likelihood ratio: 23.

    • Useful in differentiating TB pleurisy from other lymphocytic pleural effusions.

  • TB PCR: Sensitivity ranges between 41% to 80%. Expensive.


2003 respiratory questions
2003 Respiratory Questions gentleman’s problems?


Benefits of pulmonary rehabilitation in copd
Benefits of pulmonary rehabilitation in COPD gentleman’s problems?

  • Improves exercise capacity (Evidence A)

  • Reduces the perceived intensity of breathlessness (Evidence A)

  • Can improve health-related quality of life (Evidence A)

  • Reduces the number of hospitalizations and days in the hospital (Evidence A)

  • Reduces anxiety and depression associated with COPD (Evidence A)

  • Strength and endurance training of the upper limbs improves arm function (Evidence B)

  • Benefits extend well beyond the immediate period of training (Evidence B)

  • Improves survival (Evidence B)

  • Respiratory muscle training is beneficial, especially when combined with general exercise training (Evidence C)

  • Psychosocial intervention is helpful (Evidence C)

    • Global Initiative for Chronic Obstructive Pulmonary Disease, based on an April1998 meeting of the National Heart, Lung, and Blood Institute and the World Health Organization.


LVRS gentleman’s problems?

  • Feasible in a small subset of severe COPD patients

    • Highly selective

    • Upper lobe predominant Emphysema + Poor exercise tolerance

    • DLCO & FEV1 have to be > 20%

      • Mortality signicifantly increased in the group with DLCO & FEV1 < 20%

      • Non upper lobe dominant emphysema has higher mortality rate compared to Placebo group

      • Severe COPD with good functional status again has increased mortality


Inhaled corticosteroids in copd
Inhaled Corticosteroids in COPD gentleman’s problems?

4 Major studies

  • ISOLDE

    • N= 751. 1000mcg Fluticasone/d for 6 months

    • No significant difference in FEV1 decline. Small reductionin frequency of exacerbtions and slower rate of decline in health status

  • Lung Health Study

    • N=1116. Moderately severe COPD. (FEV1 64% predicted)

    • 1200mcg Inhaled Triamcinolone

      • Less outpatient visits for respiratory complaints

      • Less Respiratory Symptoms

      • Reduction in frequency of severe exacerbations

  • Copenhagen City Lung Study

    • N=290

    • FEV1 86% predicted

    • 1200mcg Budesonide/d for 6 months then 800mcg Budesonide/d for 30 months

    • No Treatment effect on frequency of exacerbation or lung function decline

  • Euroscope Study

    • N=912

    • FEV1 77% predicted

    • Budesonide 800mcg / day – significantly more dysphonia/ bruising

  • Prolonged therapy with high dose ICS required to achieve modest effects

  • No beneficial effect on disease progression


  • Tiatropium bromide in copd
    Tiatropium Bromide in COPD gentleman’s problems?

    • Anticholinergic - M1/ M3 Muscarinic receptor antagonist. Does not block M2 receptor like Iprotropium (M2 facilitates bronchodilatation.)

      • more symptomatic relief

      • Fewer exacerbations

      • Delay in first presentation to hospital with exacerbations when compared with LABA

    • More bronchodilatation and better symptomatic relief than regular Ipratropium


    Varenicline
    Varenicline gentleman’s problems?

    • New therapy in smoking cessation

    • Partial Nicotine Acetylcholine receptor agonist

    • Patients treated with Varenicline are more likely to achieve both short term and sustained smoking cessation (up to 1 year) when compared with Buproprion or Placebo

    • OR of Smoking Cessation: Varnicline: 3.2, Buproprion 1.7


    Indications for long term oxygen therapy
    Indications for long-term oxygen therapy gentleman’s problems?

    • General indications

      • PaO2 55 mmHg or SaO2 88%

    • In the presence of cor pulmonale

      • PaO2 59 mmHg or SaO2 89%

      • EKG evidence of P pulmonale

      • Hematocrit >55%

      • Clinical evidence of right heart failure

    • Specific situations

      • PaO2 60 mmHg or SaO2 90% with lung disease and other clinical needs such as sleep apnea with nocturnal desaturation not corrected by CPAP.

      • If the patient meets criteria at rest, O2 should also be prescribed during sleep and exercise, and appropriately titrated.If the patient is normoxemic at rest but desaturates during exercise or sleep (PaO2 55 mmHg),

      • Consideration of nasal continuous positive airway pressure (CPAP) or bilevel noninvasive nocturnal ventilation is warranted in patients with desaturation during sleep.


    Fertility in cf
    Fertility in CF gentleman’s problems?

    CF Male:

    • 95% have defects in sperm transport

      Absence of Vas deferens

      CF Females

      20% infertile

      Due to Thick Cervical Mucus secretions

      Secondary Amenorrhea


    Exercise physiology
    Exercise Physiology gentleman’s problems?

    • VO2 (Oxygen Uptake)

      VO2 = Cardiac Output x (A-V Oxygen content)


    Vo2 max
    VO2 Max gentleman’s problems?

    • Definition:

    • the maximum capacity of the cardiovascular system to deliver oxygen to the exercising muscles and the ability of the exercising muscles to consume oxygen at maximum exercise capacity.

    • VO2 Max is limited by Maximum Cardiac output during exercise

    • Maximal HR decreases as a function of age:

    • Maximal HR = 208- 0.7 x age (years)


    Determination of vo2 max
    Determination of VO2 Max: gentleman’s problems?


    • Alveolar Volume (VA) x kCO = DLCO gentleman’s problems?

    • VA= number of contributing alveolar units

    • kCO – efficiency of individual units

    • DLCO: Gas exchange capacity of lung as a whole


    Svc obstruction
    SVC Obstruction gentleman’s problems?

    Lung Cancer – Commonest cause for SVC obstruction

    • 2-5% of lung Cancer patients

      • 20% SCC develop SVC obstruction due to central airways involvement

      • Marker for poor prognosis in NSCLCA – median survival 5 months

      • Management:

        • Tissue diagnosis,

        • Chemo/Radiotherapy,

        • Endovascular stent – in refractory disease or rapid symptomatic progression

  • Lymphoma

    • Non Hodgkins Lymphoma

  • Mediastinal metastasis

    • Germ Cell Cancer

    • Metastastic Breast Cancer

    • Thymoma

  • Non Malignant Causes

    • Mediastinal Fibrosis – Endovascular stent, SVC bypass surgery

    • Thrombosis of indwelling catheter devices e.g. Pacemaker


  • Etiology of pancoast s syndrome
    Etiology of Pancoast’s syndrome gentleman’s problems?

    • NSCLCA – Commonest – Squamous Cell CA

    • Lyphoma

    • TB

    • Primary Chest wall tumors

    • Typically T3/T4 on presentation (Involvement of surrounding solid organs)

    • Investigation: Transthoracic FNA


    Pancoast tumor
    Pancoast tumor gentleman’s problems?

    • Right Shoulder Pain

      • Commonest first symptom (44-96%)

      • invasion into brachial plexus, 1st or 2nd ribs, Vertebral bodies, parietal pleura, chest wall

    • Horner’s Syndrome

      • 14-50%.

      • Paravertebral sympathetic chain and inferior stellate ganglion

    • Neurological complication of the upper limbs

      • C8/T1 Nerve root involvement

    • 10% profound weight loss

    • 10% have Recurrent laryngeal nerve palsy



    Ct pet scan is superior to ct alone in lung cancer staging
    CT+PET Scan Is superior to CT alone in Lung Cancer Staging gentleman’s problems?

    • Useful in assessing mediastinal disease – If there is no mediastinal lymphadenopathy, in the absence of metastasis – stage IIIA, if there is mediastinal disease Stage IIIB – surgical treatment is inappropriate


    ad