thorax 2 cas Flashcards
Surface Marking the Right parietal pleura: where is point A
The apex of the pleura (in the root of the neck above the medial 1/3 of the clavicle)
B
Just over the sternoclavicular joint
c
Just right of AML at centre of sternal angle–level 2nd costal cartilage
d
Just right of AML at level of 4th costal cartilage
e
Just right of AML at level of 6th CC (xiphoid process)
f
) MCL at the level of 8th rib (just above costal margin)
G
MAL at the level of 10th rib (lowest point of costal margin)
h
Where the scapular line(lateral margin of erector spinae muscles) crosses the 12th rib. basically along the same ling as g
I
Transverse process of L1 vertebra (subcostal pleura below 12th rib)
j
Transverse process T1 vertebra (first palpate spine of T1)
Surface Marking the lung outline
You will draw the lung outline as they lie in mid- inspiration.
a to e is the same
how about f to i
follow two ribs above the pleural reflection around the chest wall.
f
MCL at 6th rib (anteriorly)
g
MAL at 8th rib (laterally)
h
Scapular line at 10th rib (posteriorly)
i
T12 level (posteriorly)
how does the left and right lung differ
The outline for the left lung is same as for the right lung except for the mediastinal reflection below the 4th costal cartilage
2) Below the 4th costal cartilage, the cardiac notch deviates by 2-3 cm lateral at the level of 5th costal cartilage.
3) The lower border of the left lung follows the same course as the right lung.
Oblique fissure for the right and left lung
Mark two points (OF1 and OF2)
OF1- 3rd thoracic fissure
OF2 Anteriorly at the lower border of the lung at the junction of the 6th costal cartilage and MCL.
Connect these two points by a smooth curved line running around the lateral thoracic wall. This line represents the oblique fissure.
Alternative method for drawing the oblique fissure: The oblique fissure closely follows the medial border of the scapula when the arm is raised above the head of the subject. Extrapolate this line anteriorly to meet the lower border of the lung.
Horizontal (transverse) fissure of the right lung
To mark the horizontal fissure your will palpate the 4th costal cartilage on the right side and draw a line along the 4th costal cartilage and the 4th rib laterally to meet the oblique fissure in the midaxillary line. This marks the horizontal fissure between the upper and middle lobes of the right lung. It passes just above the nipple in the male. (Please note that the left lung does not have a middle lobe or a horizontal fissure).
Assessment of the position of the Trachea
The assessment of the position of the trachea in the neck and at the suprasternal notch is part of routine clinical examination of the chest. This examination is slightly uncomfortable for the patient. Therefore you should be gentle when you palpate. You will follow the following steps when examining.
Assessment of Chest Expansion§
You will stand facing the subject and place your hands firmly on the subject’s anterior chest wall (just below 5th or 6th ribs) with fingers extended around the sides of the chest. The thumbs should just meet in the anterior midline (mid-sternal line), resting lightly on the chest wall, to allow its movement during respiration. In female subjects,the examiner’s hands lie beneath the breasts.
You will ask the patient to take a deep breath and observe how far the tips of your thumbs move apart. In a normal healthy subject, it will move apart by at least 5 cm.
Repeat this examination on the posterior chest wall with thumbs meeting in the posterior midline at the level of 10th thoracic vertebra (T10). You will look for any asymmetry between right and left sides.
Percussion of the Chest
where is it if posterior
Percussion is best performed while the subject sits on the edge of the couch.
Anterior chest wall
Percussion is best performed clinically with the patient sitting on the couch at 45 degrees.
percussion
Place your left hand over the subject’s chest wall with the fingers slightly separated.
2) Align the middle finger (this is your probing finger) of your left hand along an intercostal space with the middle phalanx pressing firmly on the chest wall.
3) Use the pad of the middle finger of your right hand and strike sharply on the middle phalanx of the probing finger of the left hand.
4) Hold the percussing finger (right hand middle finger) in a semi flexed position when you strike the middle phalanx of the left hand middle finger. The striking motion must come from the wrist joint, and not from your forearm.