1. Examination of the Thorax and Lungs
Janet M.Galiczewski RN,CCRN, MSN, ANP

3. Thorax and Lungs
Thoracic cage is a bony structure defined by the sternum: 12 pairs of ribs, 12 thoracic vertebrae.
Floor is the diaphragm (musculotendinous septum separates the thoracic cavity from abdomen).
First seven ribs attach directly to the sternum via costal cartilages. Ribs 8, 9, 10 attach to costal cartilage above. Ribs 11 & 12 “floating” with free palpable tips costochondral junctions are points where ribs join their cartilages (not palpable).

4. Anterior Landmarks
Suprasternal Notch: “U” shaped depression above sternum-between clavicles.
Sternum: “Breastbone” 3 parts:
Manubrium, Body, Xiphoid Process
“Angle of Louis” Marks site of tracheal bifurcation into Right and Left main bronchi. Approximately 2.5 cm below sternal notch.

5. Anterior Landmarks (Cont).
Costal Angle: Right and Left costal margins form an angle where they meet at the Xiphoid Process. Usually 90 degrees or less, greater emphysema.

6. Posterior Landmarks
Vertebra Prominens: Most bony spur protruding at the base of the neck. This is the spinous process of C7.

7. Thoracic Cavity
Mediastinum: Middle section of the thoraic cavity-contains esophagus, trachea, heart, great vessels
Pleural cavities: R & L lung
Lung Borders:
Anterior chest: Apex-highest point lung tissue. 2-4 cm above inner third clavicles. Base lower border, rests on diaphragm 6th rib midclavicular.
Laterally lung tissue goes from the apex of the axilla down to the 7th or 8th rib.

8. Lobes of the Lungs Right lung shorter than left because of the liver.
Right lung has 3 lobes.
Left lung has 2 lobes.
Lobes are stacked in diagonal sloping segments separated by fissures that run obliquely throughout the chest.
Anterior chest almost all upper and middle lobe with very little lower lobe.
Posterior chest contains almost all lower lobe.

11. Pleura of The Lungs
Parietal Pleura: The outer lining of each lung. It is attached to the chest wall.
Viseral Pleura: The inner lining of each lung. It is attached to the lung itself.
Pleural Space: Is the space created between these two linings and it is filled with a small amount of lubricating fluid called Pleural Fluid.
Negative Pressure holds lungs tightly against chest wall and maintains inflation.

12. Trachea & Bronchial Tree
Trachea is anterior to the esophagus & transports air to the bronchi.
Bronchi are large “air tubes” leading from the trachea that conducts air into lungs.
Trachea & bronchi transport gases between environment and lung parenchyma.
Alveoli are the primary site of gas exchange.

13. Mechanics of Respiration
The Mechanism of Breathing maintains PH of the blood by supplying oxygen & eliminating excess carbon dioxide.
With Inspiration the size of the thoracic container increases creating a slightly negative pressure in relation to the atmosphere, air rushes in.
Major muscle responsible for this increase is the diaphragm.
Inspiration – contraction of the diaphragm causes it to descend and flatten.
Expiration – passive, relaxation of the diaphragm

14. Inspiration & Expiration
Inspiration: Intercostal muscles lift the sternum and elevate the ribs, diaphragm descends.
Expiration is primarily passive. As diaphragm relaxes - it is forced to dome up.
This results in air flowing out due to positive pressure within the alveoli.
Respiratory center in the brain stem (Pons & medulla).
Normal stimulus to breathe is an increase in CO2 (Hypercapnia).

15. Review Of Systems Smoking History Exposure to Smoke
Environmental Exposures
Occupation
Sleeping Pattern
Nutritional Status
Medical/Surgical History
Medications

16. Inspection General Appearance Restless or agitated Flaring nostrils
Supraclavicular retractions
Intercostal retractions
Use of accessory muscles

17. Inspection (cont). Cyanosis:
Central Cyanosis: Circumoral (around mouth), check lips, tongue, buccal mucosa.
Peripheral Cyanosis: check nail beds and extremities.
Check nails for clubbing.
Cough: productive or non-productive
Inspect appearance of sputum: Mucoid vs Purulent

18. Inspection (cont).
Musculature: Check accessory muscles: Sternomastoid, Intercostals, Scalene, Ala Nasi
Symmetry: Check symmetrical expansion of chest wall.
Bilateral diminished expansion may be due to acute pleurisy, pleural fibrosis, atelectasis, chest pain (fx. ribs), Costochondritis.
Unilateral diminished expansion may be due to pneumothorax.
Check for asymmmetry of spine:Kyphosis, Lordosis, Scoliosis.

19. Inspection (cont).
Configuration & Contour: Check AP diameter (AP to transverse diameter).
Abnormal:
Barrel chest
Pectus Carinatum
Pectus Excavatum

20. Inspection (cont).
Movement: Breathing patterns, smooth & even breathing.
Passive breathing: normal rate12-20
Inspiration > Expiration
Check Character of Breathing: type, rate, rhythm
Apnea
Hyperventilation/Tachypnea
Kussmaul
Hypoventilation/respiratory depression
Cheyne Stoking/Dying Sighs

21. Palpation Trachea: Check for deviation
Thorax: Check for crepitus, tenderness.
Check for chest wall excursion
Check for tactile or vocal fremitus:Vibrations produced in the larynx that are transmitted to the chest wall.
Technique: palpate with ball of hand
Ask Pt. to say “99”

22. Tactile fremitus (cont).
Normal finding is a mild purrlike sensation.
Increased tactile fremitius occurs in conditions where solid conducts vibrations better than air. Ex. Pneumonia, tumor, pulmonary fibrosis
Decreased tactile fremitus occurs when there is increased distance that sound has to travel before it reaches chest wall. Ex. Pleural Effusion, pneumothorax, COPD.

23. Chest Wall Excursion
Palpation of Tactile Fremitus

24. Palpation (cont).
Check supra & infraclavicular nodes,check axillary nodes.

25. Percussion Percuss: Anterior chest, lateral chest, posterior chest
Normal:
Resonance
Abnormal:
Dullness - consolidation, atelectasis, pleural effusion.
Hyperresonance -pneumothorax,emphysema, asthma.

26. Percussion (cont).
Diaphragmatic Excursion: Checks ROM of the diaphragm.
Procedure: Pt. sits upright.
Tell Pt. To EXHALE and HOLD IT.
Percuss downward posterior chest at scapular line.
Continue until tone changes resonance to dullness, mark with marker.

27. Diaphragmatic Excursion (cont).
Tell Pt. To take a DEEP INHALATION AND HOLD IT.
Continue percussing from first mark until changes from resonance to dullness.
Mark with a marker, measure findings. DON’T FORGET TO TELL PT. TO BREATH!!!
Normal finding 4-6 cm. Repeat on other side.

28. Auscultation Pt. sit upright, breathe slowly through mouth.
Use diaphragm.
Auscultate anterior, lateral and posterior chest.

30. Types of Breath Sounds Bronchial (Tracheal) Loud and high pitched
Vesicular Breath Sounds
Soft and low pitched
Fine rustling/swishing sound.
Heard on inspiration continuosly without pause until expiration.
Heard over all post. Lung fields and anterior periph. Fields.
Inspiration> Expiration
Bronchial (Tracheal)
Loud and high pitched
Tubular quality
Expiration>Inspiration
Heard only anteriorly over trachea & larynx
Expiration loud

31. Types of Breath Sounds Bronchovesicular Breath Sounds
Combination of vesicular and bronchial sounds
Represent a mixture of sounds produced by vibrations of bronchial and alveoli vibrations.
No pause between inspiration and expiration
Inspiration = Expiration
Heard best anteriorly at 1&2 ICS, posteriorly between scapula, anywhere else = consolidation

33. Auscultation
Decreased Breath Sounds: shallow breathing, pleural effusion, COPD, pneumothorax, asthma, atelectasis.
Increased Breath Sounds:Consolidation-tumor, pneumonia.

34. Adventitious Sounds
Rales (Crackles): Discontinuous sounds highpitched.
Sounds like hair being rubbed together
Sound produced by air passing through fluid in air spaces (CHF, pneumonia).
Usually on inspiration / not expiration
Cough doesn’t clear.

35. Adventitious Sounds (cont).
Rhonchi: Deeper, rumbling sounds.
Low pitched, snoring quality
> pronounced during expiration.
Etiology: larger airways are obstructed with mucus or tumor in large airways.
Clear with coughing.

36. Adventitious Sounds (cont).
Wheezing: High pitched, musical, whistling sounds.
Produced by narrowed airway.
R/t bronchospasm, asthma, tumor, foreign body
Can occur during inspiration or expiration.
Stridor: increased musical wheeze heard over trachea on inspiration; cause obstruction = MEDICAL EMERGENCY

37. Adventitious Sounds (cont).
Friction (Pleural) Rub: Course, dry, grating sound
Etiology: Inflamed pleural surfaces rub.
Sounds similar to cupping hand over ear, scratching back of hand with other hand.
Usually heard anteriolateral chest wall
Continuous during inspiration and expiration.
Differentiate from cardiac origin: have Pt. hold breath-if continues Cardiac origin, if stops-Lung origin.

38. Tests of Vocal Resonance
BRONCOPHONY: “99”
NL. Muffled sound
Abnormal: hear, clear loud “99” (consolidation)
WHISPERED PECTORILOQUAY
Whisper “99”
Normal-Don’t hear or very faint
Abnormal hear “99” EGOPHONY Say “E”
Normal- hear “E”, Abnormal-hear “A”