Peter Shared "Respiratory" - 311 Picmonics
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Respiratory
Respiratory Anatomy
- Characteristics
- Nasal Cavity
- Hair Filters
- Mucus Filters and Moistens
- Capillaries Warm
- Pharynx (Throat)
- Larynx (Voice Box)
- Cilia Expel Mucus and Dust
- Trachea
- Bronchi
- Alveoli
2 mins
Alveolar Gas Exchange
- Characteristics
- Pulmonary Artery Blood is O2-Poor, CO2-Rich
- Two-Cell Thick Air-Blood Barrier
- CO2 Diffuses Into Air
- O2 Diffuses Into Blood
- Gases Equilibrate
- Pulmonary Vein is O2-Rich, CO2-Poor
- Thermoregulation
2 mins
A-a Gradient
- Partial pressure of alveolar oxygen (PAO2)
- Partial Pressure of Arterial O2 (PaO2)
- Normal 10 to 15 mmHg
- Hypoxemia with an Abnormal A-a Gradient
- Diffusion problem
- Shunting (Low V/Q)
- Dead space (high V/Q)
1 min
Physiologic Dead Space (VD)
- Tidal Volume (VT)
- Partial pressure of arterial CO2 (PaCO2)
- Partial pressure of CO2 in expired air (PECO2)
- VD = TV x (PaCO2-PECO2) / PaCO2
2 mins
-pnea
- Meaning
- Breath
35 secs
-ptysis
- Meaning
- Spitting
39 secs
Aer/o
- Meaning
- Air or Gas
27 secs
Alveol/o
- meaning
- Air Sac, Small Sac, or Alveolus
34 secs
Byssin/o
- meaning
- Cotton Dust
30 secs
Hal/o or Halit/o
- meaning
- Breath
30 secs
Rhin/o
- Meaning
- Nose
33 secs
Rhonc/o
- Meaning
- Snoring
22 secs
Autonomic Nervous System
- Characteristics
- Sympathetic Nervous System
- Fight or Flight
- All Preganglionic Neurons Release Acetylcholine
- Sympathetic Postganglionic Neurons Release Norepinephrine
- Antagonistic Effects of Sympathetic and Parasympathetic Nervous Systems
- Parasympathetic Nervous System
- Rest and Digest
- Parasympathetic Postganglionic Neurons Release Acetylcholine
2 mins
Obstructive Sleep Apnea (OSA)
- Cause/Mechanism
- Narrowed or Obstructed Air Passage
- Assessment
- Apnea
- Loud Snoring
- Startle Response
- Daytime Drowsiness
- Interventions
- Positional Therapy
- Oral Appliance
- Continuous Positive Airway Pressure (CPAP)
- Surgery
- Considerations
- Weight Loss
3 mins
Blood Acid-Base Control
- Characteristics
- In a State of Acidemia
- Medullary Chemoreceptors Control Ventilation Rate
- Expulsion of CO2 through Lungs Increases pH
- Bicarbonate Reabsorption from the Kidney Increases pH
- Kidney Excretion of H+ Increases pH
2 mins
Alveolar Gas Equation
- Equation
- Partial Pressure of Alveolar Oxygen (PAO2)
- Partial Pressure of Oxygen in the Inspired Air (PIO2)
- PIO2 Normally Approximated = 150 mmHg
- Arterial Partial Pressure of CO2 (PaCO2)
- Respiratory Quotient (R)
- R Normally Approximated = 0.8
- PAO2 = PIO2 - (PaCO2/R)
1 min
Respiratory Acidosis
- Hypoventilation
- Increased PaCO2 > 45
- Barbiturates Depress Central Respiratory Center of Brain
- Opioids Depress Central Respiratory Center of the Brain
- Airway Obstruction
- Respiratory Muscle Weakness/Paralysis
3 mins
Respiratory Acidosis Interventions
- Improve Respiration
- Pharmacologic Interventions
- Bronchodilators
- Respiratory Stimulants
- Drug Antagonists
- Nonpharmacologic Interventions
- Oxygen
- Assisted Ventilation
- Prevent Complications
1 min
Respiratory Alkalosis
- Hyperventilation
- High Altitude
- Aspirin
- Restrictive Lung Disease
- Pulmonary Embolism
- Pregnancy
- Progesterone
- Rib Fracture
- Anxiety
2 mins
Respiratory Alkalosis Interventions
- Treat Underlying Cause
- Mechanically Ventilated Patients
- Decrease Tidal Volume and/or Respiratory Rate
- Give Adequate Pain Control and Sedation
- Hyperventilation Syndrome
- Sedatives
- Antidepressants
- Considerations
- Compensatory Drop in Serum Bicarbonate
- Calming Breathing Exercises
- Correct CO2 Slowly
2 mins
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