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PHYSIOLOGY LECTURE PRESENTATIONS BY - DR SHAHAB PhD, MD Respiratory System Physiology By Dr. SHAHAB SHAIKH Lecture : Clinical Examination of RS PhD MD.

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Presentation on theme: "PHYSIOLOGY LECTURE PRESENTATIONS BY - DR SHAHAB PhD, MD Respiratory System Physiology By Dr. SHAHAB SHAIKH Lecture : Clinical Examination of RS PhD MD."— Presentation transcript:

1 PHYSIOLOGY LECTURE PRESENTATIONS BY - DR SHAHAB PhD, MD Respiratory System Physiology By Dr. SHAHAB SHAIKH Lecture : Clinical Examination of RS PhD MD

2 Physiology lecture presentations by - DR SHAHAB PhD, MD

3 Respiratory System Physiology Clinical Examination of RS  Inspection  Palpation  Percussion  Auscultation

4 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Comfortable at rest.... ? Breathless....? Cyanosis.....? Chest wall appearance: Chest wall movement: Breathing: Neck region:

5 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Chest wall appearance: –a. Shape Normally Ellipsoid Barrel Chest - Hyperexpansion (A-P diameter increased) eg. COPD –b. Symmetry –c. Scars / Lesions –d. Deformity: Pectus carinatum –sternum bulges forwards (‘pigeon chest deformity’) Pectus excavatum –sternum caves inwards (Funnel chest deformity)

6 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Pectus Carinatum Pectus Excavatum

7 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Chest wall movement: –a. Expansion –b. Symmetry of movement –c. Paradoxical movement: Phrenic nerve paralysis Flail chest

8 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Breathing: –Respiratory rate: –Tachypnoea is a respiratory rate > 16/min and is caused by increased ventilatory drive as in fever, asthma and COPD, or reduced ventilatory capacity as in pneumonia, pulmonary oedema and interstitial lung disease. –A slow respiratory rate can occur in association with opioid toxicity, hypothyroidism, raised intracranial pressure, hypothalamic lesions, and hypercapnia.

9 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Breathing: –Respiratory depth –Respiratory Rhythm –Type of respiration: Normal Kussamul: Hyperventilation with deep, sighing respirations (Küssmaul respiration) is a response to the reduced arterial pH in metabolic acidosis. This can occur in acute renal failure, lactic acidosis, diabetic ketoacidosis and in salicylate and methanol poisoning. The patients appear to have 'air hunger'.

10 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Breathing: Cheyne stroke: Cheyne-Stokes breathing, or periodic respiration, is characterized by a period of increasing rate and depth of breathing followed by diminishing respiratory effort and rate, usually ending in a period of apnoea or hypopnoea. The cycle then repeats. It is seen most frequently in stroke involving the brain stem, and in severe cardiac failure. However, it may be normal during sleep in the elderly. –Use of accessory muscles: These include the sternocleidomastoids, platysma and pectoral muscles. Use of accessory muscles is characteristic of patients with COPD who have hyperinflated lungs.

11 Physiology lecture presentations by - DR SHAHAB PhD, MD Inspection Neck region: –Position of Trachea Causes of tracheal deviation –Towards the side of the lung lesion »Upper lobe or lung collapse »Upper lobe fibrosis »Pneumonectomy –Away from the side of the lung lesion »Tension pneumothorax »Massive pleural effusion –Supraclavicular fossae –Visible pulsation, JVP –Lymph nodes

12 Physiology lecture presentations by - DR SHAHAB PhD, MD Palpation Tenderness Temperature Position of Trachea: Chest Expansion: Tactile Vocal Fremitus: Apex beat localization:

13 Physiology lecture presentations by - DR SHAHAB PhD, MD Palpation Position of Trachea: Use one or two fingers in supra sternal notch !

14 Physiology lecture presentations by - DR SHAHAB PhD, MD Palpation Chest Expansion: –Both sides of the thorax should expand equally during tidal and maximal inspiration. –Reduced expansion on one side indicates abnormality on that side, e.g. pleural effusion, lung or lobar collapse, pneumothorax and unilateral fibrosis. –Bilateral reduction in chest wall movement is common in advanced COPD and diffuse pulmonary fibrosis

15 Physiology lecture presentations by - DR SHAHAB PhD, MD Palpation Tactile Vocal Fremitus: –Tactile vocal fremitus is the transmission of voice sounds from central airways to the chest wall. It is increased by solid lung, provided the airways supplying that part of the lung are patent. –It is important to decide whether areas found to be dull to percussion show increased tactile vocal fremitus (suggesting consolidation or fibrosis) or reduced tactile vocal fremitus (suggesting fluid or collapse) –During assessment of tactile vocal fremitus, it is conventional to ask the patient to say 'ninety -nine'. In other languages, other numbers or phrases are used. (The intention is to produce a nasal 'oi' sound).

16 Physiology lecture presentations by - DR SHAHAB PhD, MD Palpation Apex beat localization: –Deviation of the cardiac apex beat indicates shift of the lower mediastinum. –Displacement of the cardiac impulse without deviation of the trachea is usually due to left ventricular enlargement but can also occur in scoliosis, kyphoscoliosis, or severe pectus excavatum. –The cardiac apex beat may be difficult to localize in obesity, pericardial effusion, poor left ventricular function or patients with lung hyperinflation as in COPD.

17 Physiology lecture presentations by - DR SHAHAB PhD, MD Percussion Ideal sites for percussion are as shown below

18 Physiology lecture presentations by - DR SHAHAB PhD, MD Percussion The sounds heard in different condition are as mentioned: TypeCondition ResonantNormal lung HyperresonantPneumothorax Dull Pulmonary consolidation Pulmonary collapse Severe pulmonary fibrosis 'Stony dull'Pleural effusion

19 Physiology lecture presentations by - DR SHAHAB PhD, MD Auscultation The stethoscope was invented by a French physician, Laennec, in Auscultate both sides alternately, comparing findings over a large number of equivalent positions to ensure that localized abnormalities are not missed.

20 Physiology lecture presentations by - DR SHAHAB PhD, MD Auscultation Respiratory (normal) sounds –Vesicular sounds –Bronchial sounds Vesicular sounds Lower pitched, rustling Softer relatively Inspiration longer & Expiration shorter No Gap between Insp & Exp sounds Normally heard in lung parenchymal region (peripheral thorax) Vesicular sounds Lower pitched, rustling Softer relatively Inspiration longer & Expiration shorter No Gap between Insp & Exp sounds Normally heard in lung parenchymal region (peripheral thorax) Bronchial sounds Higher pitched, hollow or blowing quality Louder relatively Inspiration & Expiration equal Gap present between Insp & Exp sounds Normally heard only along tracheobronchial tree (central thorax) Bronchial sounds Higher pitched, hollow or blowing quality Louder relatively Inspiration & Expiration equal Gap present between Insp & Exp sounds Normally heard only along tracheobronchial tree (central thorax)

21 Physiology lecture presentations by - DR SHAHAB PhD, MD Auscultation Adventitious(Added) sounds:

22 Physiology lecture presentations by - DR SHAHAB PhD, MD Auscultation vocal resonance : –assess vocal resonance by asking the patient to say 'one, one, one'. In the normal lung a whispered note will not be heard but over consolidated lung, as in pneumonia, the sound is transmitted producing 'whispering pectoriloquy'.

23 Physiology lecture presentations by - DR SHAHAB PhD, MD Respiratory Findings VARIOUS RESPIRATORY SIGNS & UNDERLYING PATHOLOGY Shape of the ChestPigeon-shapedBarrel-shaped Asthma in childhood Rickets Emphysema Symmetry of the ChestForward BendingLateral Bending KyphosisScoliosis Respiratory rateIncreasedDecreased Fever Acute Pulmonary Infections Pleural Pain Bronchial Asthma Pulmonary Edema Repiratory Failure

24 Physiology lecture presentations by - DR SHAHAB PhD, MD Respiratory Findings Mode of BreathingThoracicAbdominic Abdominal pain Ascites Gaseous Distension of the Intestines Large Ovarian Cyst Pregnancy Ankylosing Spondylitis Pleural Pain Intercostal Paralysis TracheaPushedPulled Pleural Effusion Pneumothorax Supramediastinal Mass Pulmonary Consolidation Lung Collapse Pulmonary fibrosis Reduced Chest ExpansionBilateralUnilateral

25 Physiology lecture presentations by - DR SHAHAB PhD, MD Respiratory Findings Breathing SoundsDiminished VesicularBronchial Breathing Emphysema Pleural effusion/thickening Thick Chest wall Pneumothorax Lung Collapse when large bronchi occluded Pulmonary Consolidation Large Superficial Lung Cavity Pulmonary Fibrosis Lung Collapse when large bronchi patent Vocal ResonanceIncreasedDecreased Pulmonary Consolidation Lung Collapse when large bronchi patent Pleural Effusion Pneumothorax Lung Collapse when large bronchi occluded

26 PHYSIOLOGY LECTURE PRESENTATIONS BY - DR SHAHAB PhD, MD Thank You


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