Oxingination- Thorax and the Lungs Flashcards
Anterior Thorax
12 pairs of ribs
Sternum
Posterior Thorax
12 thoracic vertebrae
Spinal column
Ribs
1-7 articulate with sternum
8-10 articulate with costal cartilage
11-12 do not articulate= free floating
All articulate with vertebrae
Right Lung
Three lobes: Upper, Middle, Lower
Shorter than left lung
Left lung
two lobes- upper and lower
Lung apex
Top of lung
Anterior - 2.5-4 cm above clavicles
Posterior at level of T1
Lung base
Bottom of lung
Anterior- 6th rib at MCL
Posterior- T10 on expiration and T12 on inspiration
Lateral 8th rib at MAL
Mediastinum
Extends from sternum to spine
Trachea and pulmonary vessels
Bronchi
Trachea bifurcates at sternal angle and level of 4th and 5th vertebrae
Right= shorter, more vertical
External intercostal muscles
elevates ribs and increase size of thoracic cavity on inspiration
internal intercostal muscles
draw ribs together during expiration
Accessory Muscles
Used when there is increased demand for oxygen
Scalene, sternocleidomastoid, trapezius, abdominal
Inferior angle of scapula
Level of 7th rib
Anterior landmark lines
Anterior axillary line
Midclavicular line
Midsternal (vertebral) line
Axillary landmark lines
Anterior axillary line
Midaxillary line
Posterior axillary line
Posterior Landmark lines
Posterior axillary line
Scapular line
Midspinal or vertebral line
Inspiration
active, Muscle contraction, Negative intra-pulmonic pressure
Expiration
Passive, Muscles relax, Positive intra-pulmonic pressure
Common chief complainst
Dyspnea, Cough, Sputum, chest pain
Generalized thorax approach
Compare right vs. left
systematic approach
Ask patient to displace breast tissue to palpate, auscultate, and percuss anterior thorax
Proceed from lung apices to the bases
Shape of thorax
Transverse diameter
Anteroposterior (AP) diameter- AP to transverse ratio 1:2 twice as wide as thick
Barrel chest
1:1 ratio–round chest
COPD–air trapped in alveoli
Pectus carinatum
Protrusion of sternum
Congenital, Rickets
Pectus excavatum
Depression of sternum= Can compress heart and lungs
Congenital
Posterior shape of thorax variations
Kyphosis-hunch back or scoliosis
Symmetry of Anterior chest wall
Note any differences between the two sides, shoulder height should be the same, Masses
Symmetry of posterior chest wall
Note any differences between the two sides, position of scapula and shoulder height- should be the same, Masses
Presence of superficial veins
Dilated veins should not be seen
Note pattern and symmetry, if present
Costal angle
Angle formed by ribs and bottom of sternum= Normal is 90
Angle is less during expiration and rest
Angle of ribs
Articulate with sternum at 45 degree angle
Intercostal spaces inspection
Observe through respiratory cycle
There should be no bulging or retraction
Abnormal: bulging during expiration/ retraction during inspiration
7 Inspections of Respirations
Rate, Pattern, Depth, Symmetry, Audibility, Patient position, Mode
Respiration Rate
full minute, do it slyly, in/out=1 cycle. Normal btw 12-20 breaths per min
Eupnea
12-20 breaths per minute (normal)
Tachypnea
> 20 breaths per minute (stress, respiratory illness)
Bradypnea
< 12 breaths per minute (increased intracranial pressure, drug overdose)