L4-5: Low Lung Volumes, Atelectasis and Ventilation Strategies Flashcards
Which lung segment is auscultated at the point marked X?
Right upper lobe anterior segment (rib 2-4, midclavicular line)
An extrathoracic wheeze characteristically more marked during inspiration. True or False.
True
An intrathoracic wheeze characteristically more marked during expiration. True or false.
True
An intrathoracic wheeze characteristically more marked during _____ (inspiration/expiration).
expiration
An extrathoracic wheeze characteristically more marked during ______ (inspiration/expiration).
inspiration
What is type II respiratory failure?
Hypoxaemia with hypercapnia
What is the colour of low VS high oxygen concentration?
- Low: Green
- High: White
Why care about Ventilation? What is the aim?
- No breath = No life
- Ventilation strategies are vital in Physio toolkit
- Ax outcome and modify Rx as needed
Aim = Identify ventilation problems / individuals at risk of these problems –> select and implement most appropriate technique/s for individual
- Treat and identify ventilation problems
What does BIBA stand for?
BIBA: Brought in by ambulance
What does ICC stand for?
Intercostal catheter
What are 3 pieces of information found in the bed chart?
- Vital signs
- BP
- HR
- RR
- Normal: 12-16 breaths
- SpO2
- Normal: >96% FiO2
- Pain
- VAS
- Medications
- PCA
What are 7 characteristics of the patient interview?
- Main concern
- eg. Painful rib fractures; pain-limited cough
- Pain
- eg. Sharp, over injured area
- Cough
- eg. Ineffective due to pain ; avoiding // non-productive
- SOB
- PMHx - Medical chart info confirmed
- Functional ability - Independent, No formal exercise usually performed
- Social Hx - Medical chart info confirmed
What are 2 major things to be aware of in the physical examination?
- Environment / Attachments
- Supine, resting in bed
- Hudson mask, FiO2 0.35, SpO2 91%
- ICC: Swinging, bubbling, draining (Module 2)
- PCA: Dorsum L) hand
- Patient general state
- Alert, cooperative
- Grimacing in discomfort
- Posture: Guarding R) side
- Colour: NAD
What are 4 characteristics of environment/attachments to be aware of in the physical examination?
- Supine, resting in bed
- Hudson mask, FiO2 0.35, SpO2 91%
- ICC: Swinging, bubbling, draining (Module 2)
- PCA: Dorsum L) hand
What are 4 characteristics of patient general state to be aware of in the physical examination?
- Alert, cooperative
- Grimacing in discomfort
- Posture: Guarding R) side
- Colour: NAD
What are 5 major assessments of the physical examination?
- Respiration
- Chest shape - NAD
- Breathing pattern
- ↓ Costal expansion R) side
- Pain on deep inspiration - avoiding
- ↑ Accessory muscle use
- With not wanting to expand the thorax
- Palpation
- ↓ R) basal costal expansion
- ° Fremitus
- Retained secretions
- Auscultation
- ↓BS R) base
- °AS
- Cough – not performed at this time due to 8/10 pain
- Circulation
- DVT check – calves SNT (soft, non tender)
- Pulses ++ tibialis anterior, dorsalis pedis, all R)= L) = N
What does NAD stand for?
NAD: No abnormality detected
What does AS stand for?
AS: added sounds (eg. crackles)
What are 5 stages of respiration?
- Respiratory controller
- Respiratory muscles
- Rib Cage + pleura
- Abdomen
- Movement of air
- Alveolar ventilation
What are 2 characteristics of the respiratory controller as the 1st stage of respiration?
- Respiratory center – involuntary
- Cortical control – voluntary
- Eg:
- Breathing more due to CO2 (involuntary)
- vs
- Voluntarily breathing deeper
What are 4 conditions that may affect the respiratory controller as the 1st stage of respiration?
- Pharmacological eg post-op, over-dose
- Head injury
- Tumour
- CVA/ stroke
What is respiration like a normal patient VS a COPD patient?
- Normal drive to breath: built up of CO2
- COPD drive to breath: decrease of CO2
What is the pathway to respiratory muscles into the 2nd stage of respiration?
Nerve conduction, synapses- Neurological injuries
That affect the respiratory controller
What are 3 conditions that may affect the pathway to respiratory muscles as the 2nd stage of respiration?
- Guillian Barre syndrome
- Spinal cord injury
- Poliomyelitis
What are respiratory muscles in the 2nd stage of respiration?
Diaphragm, intercostals, SCM, scalenes
What are 4 conditions that may respiratory muscles in the 2nd stage of respiration?
Can be less effective
- Myopathies
- Muscular dystrophy
- Fatigue
- Surgery
- Eg. midline surgery (inhibited diaphragm)
What are 3 characteristics of rib cage + pleura in the 3rd stage of respiration?
- Bone
- Rib #s
- Post cardiac surgery
- Kyphoscoliosis
- Physically limiting the bucket handle mechanism
- Pleura
- Pneumothorax
- Fluid or blood caught around the thorax (Pressure/squash on lung –> lung can’t move properly)
- Haemothorax
- Pleural effusion
- Pneumothorax
- Abnormal chest wall compliance
What are 3 pressure changes of the abdomen in the 3rd stage of respiration?
- Distention (Limits amount of space the lung has to expand/move)
- Eg
- Obesity
- Pregnancy
- Peritoneal fluid (ascites)
- Pancreatitis
- Constipation
- Abdominal surgery
- Eg
- Abnormal mechanics (muscle flaccidity)
- Eg
- Spinal injury
- Guillian Barre
- Eg
What are 2 characteristics of the movement of air in the 4th stage of respiration?
- Inhibition; Pain
- Eg: (Not wanting to expand the lungs)
- Surgery
- Chest trauma
- Eg: (Not wanting to expand the lungs)
- Compression
- Eg:
- Tumour
- Pneumothorax
- Haemothorax
- Cardiomegaly
- Physically compressing lung (unable to get air in easily)
- Eg:
What are 3 characteristics of the alveoli ventilation in the 5th stage of respiration?
- Bronchi to alveolus
- Secretions within bronchi
- Tumour within bronchi
- Bronchitis; Asthma
- More narrow bronchi –> harder to get air through
- Within alveolus
- Decreased surfactant
- Pulmonary oedema
- Inflammation of tissue
- Pneumonia
- Emphysema
- Larger, floppy airways, that has less SA = less effective
- Emphysema
What is the impact on ventilation for a patient who has abdominal surgery?
What are 3 characteristics of the respiratory system?
- Complex system
- Interdependent components
- Conditions affecting one part of system will affect overall process
What are 9 important concepts of ventilation?
- Functional residual capacity (FRC)
- Closing capacity (CC)
- Hypoxaemic pulmonary vasoconstriction
- Atelectasis
- Critical opening pressure
- Newtonian Law of Viscosity
- Collateral ventilation
- Alveolar interdependence
- Time constants
What is functional residual capacity (FRC) as the 1st important concept of ventilation?
- Volume of gas in the lung after a normal expiration
- Participates in gas exchange during insp. AND exp.
- Balance between inward recoil of lungs and outward recoil of chest wall
What is static lung volumes?
What is closing capacity (CC) as the 2nd important concept of ventilation?
- Volume of air in lung when small airways in dependent lung start to collapse during expiration (trapping air inside)
- Healthy, young individual (approximately):
- CC = RV (residual volume)
- CC < FRC
- If CC ≥ FRC during normal expiration there may be collapse of airways in dependent lung areas, resulting in reduced ventilation to these areas