Chest and lungs Flashcards
primary muscles of respiration (2)
diaphragm and intercostals
which intercostals are important to inspiration?
external
which of the lobes on the left lobe contains the lingula?
left upper lobe
at what rib levels (axilla and anterior) is the oblique fissure on the right? on the left?
5th rib in axilla and 6th rib at midclavicular; 6th rib at midclavicular
posteriorly the apexes of the lungs rise to what vertebral level?
T1
upon deep inspiration the lower borders of the lungs descend to which vertebral level?
T12
upon forced expiration the lower borders of the lungs ascend to which vertebral level?
T9
at what vertebral level does the trachea bifurcate?
T4/5
main bronchi are divided into ____ branches on the right and ____ on the left
3:2
acini consists of these 4 parts:
respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli
bronchial arteries branch from where? (2)
anterior thoracic aorta and intercostal arteries
most of the blood from the lungs is drained via the:
Pulmonary Veins
chemoreceptors are found in these 2 places and each is stimulated by what
medulla oblongota (H+) and carotid body (low O2 and high CO2)
chemoreceptors send signals to the respiratory center in this part of the brain
medulla oblongota
nerve impulses from the medulla send signals to this part of the brain that controls respiratory muscles
Pons
anterior right lung consists mainly of which 2 lobes?
upper and middle
posterior lung is mainly which lobe(s)?
lower lobe
lower lobe extends between which vertebral levels?
T3-T10/12
at what rib levels is the horizontal fissure at axilla and anteriorly?
axilla at 5th rib and anteriorly at 4th rib
the lateral lung extends between which landmarks?
peak of axilla to 7th or 8th rib
the number of each intercostal space corresponds to that rib immediately below/above it?
above
is the resistance in the pulmonary circulation less than or greater than that in systemic circulation?
less than
what stimulates the closure of the foramen ovale?
decrease in pulmonary pressure
what stimulates the closure of the ductus arteriosus?
increase in O2 tension in arterial blood
barrel chest seen in older adults is the result of what?
loss of muscle strength in thorax and diaphragm
underventilation of alveoli in lower lung fields and decreased tolerance for exertion in older age are result of what? (3)
alveoli become less elastic and more fibrous, interalveolar folds decrease which decreases alveolar surface area, and loss of strength of resp muscles
what predisposes older adults to respiratory infections?
aging mucous membranes become drier and can’t get rid of mucous
what 5 sx associated with chest pain signals a circumstance not involving the heart?
constant achiness, stays in 1 position, made worse by pressing on precordium, fleeting needle-like jab and location in shoulders or between shoulder blades
possible cause of severe, acute chest pain in adults and adolescents
cocaine use
prominent sternal protrusion
pectus carinatum (pigeon chest)
indentation of lower sternum above xiphoid
pectus excavatum
superficial venous patterns over the chest may indicate what?
heart disorders or vascular obstruction
the scapular lines go through which part of the scapula?
inferior angle
normal RR
12 to 20
normal RR:HR
1:4
these 2 conditions can cause dyspnea in an otherwise normal person
obesity and sedentary lifestyle
difficult and labored breathing with SOB
dyspnea
SOB that begins or increases when the patient lies down
orthopnea
sudden onset of SOB after a period of sleep
paroxysmal nocturnal dyspnea
dyspnea that increases in upright posture
platypnea
these 4 non-resp conditions can cause hyperventilation
protective splinting from broken rib or pleurisy or massive liver enlargement or abd ascites
these 4 conditions can cause bradypnea
neuro or electrolyte disturbance, infection or protection against pain
10 Ps of rapid onset dyspnea
pneumonia, pneumothorax, pulm constriction/asthma, peanut (foreign body), pulm embolus, pericardial tamponade, pump failure, peak seekers, psychogenic, poision
these 6 conditions cause increased resp rate and depth
metabolic acidosis, CNS (pons) lesion, anxiety, ASA poisoning, hypoxia, pain
these 5 conditions cause decreased resp rate and depth
metabolic alkalosis, CNS (cerebrum) lesion, MG, narcotic overdose, obesity
regular period of breathing with intervals of apnea followed by crescendo/decrescendo sequence of respr
Cheyne-Stokes (periodic) breathing
Cheyne-Stokes breathing occurs in those with these 2 probs
cerebral brain damage or drug-caused resp compromise
irregular resp varying in depth and interrupted by intervals of apnea, but lacking the repetitive pattern of periodic respiration
biot resp
biot respiration is associated with what 3 conditions?
increased ICP, drug poisoning, and medulla brain damage
axtaxic resp is a more severe form of what other resp?
biot
what causes secondary apnea?
anything that limits O2 from getting into the blood
what 3 things can cause primary apnea?
blow to the head, newborn (needs more CO2 build up) and inhalation of irritating vapor or gases
this is characterized by long inspiration and what amounts to expiration apnea
apneustic breathing
Dx: chest asymmetry
collapsed lung or limitation of expansion by extrapleural air, fluid or mass
Dx: unilateral or bilateral bulging
resp obstruction
Dx: retractions
inspiratory obstruction
Dx: stridor
obstruction high in resp tree
Dx: unilateral retraction without suprasternal notch involvement
foreign body in bronchi
Dx: retraction of lower chest
asthma and bronchiolitis
sx of upper airway obstruction
inspiratory stridor, hoarse cough, nasal flaring and suprasternal notch retraction
sx of severe upper airway obstruction
inspiratory and expiratory stridor, barking cough, retractions also involve subcostal and intercostal spaces, cyanosis
sx of obstruction above glottis
quieter stridor, muffled voice, difficult swallowing, no cough, awkwardly positioned head
sx of obstruction below glottis
louder stridor, hoarse voice, swallowing ok, harsh cough
this is done during increased expiratory effort and reduces the effort of dyspnea
lip pursing
3 diseases associated with clubbing
lung fibrosis, CHD and CF
Dx: crepitus
air in subcut tissue from ruptured resp tract or infection by gas-producing org
palpable, coarse, grating vibration during inspiration
pleural friction rub
Dx: pleural friction rub
inflam of pleural surfaces
posteriorly at what vertebral level do you place your hands to eval thoracic expansion?
T10
where is tactile fremitus best felt?
parasternally at the 2nd intercostal space at the level of the bifurcation of the bronchi