Care Of The Critically Ill Patient With Resp Dysfunctio n Flashcards
Tidal volume
Volume of air exchanged with each breath
FiO2
% of o2
MAP
Tells us how much perfusion is getting to the organs
SBP+2 (DBP/3
> 65 mmHg to perfume to organs ( we prefer 70 but 65 is the bare minimum
Around 65-100 is the sweet spot
How
ABGs
Maintain homeostasis
Resp (CO2) or metabolic HCO3
PaO2/FiO2 ratio
Determines lung injury
Normal 300-500
Acute lung injury 200-300
Significant lung injury <200
High mortality <100
We need to know this formula
How to figure out your map
SBP+2(DBP) /3
Normal PH
7.35-7.45
If less they are acidic - if over they are alklotic
Normal of Pao2 /FiO2 ratio
300-500
Acute lung injury of PaO2/FiO2 ratio
200-300
Significant lung injury pao2 /FiO2 ratio
<200
High mortality of pao2 /FiO2 ratio
<100
Hypoxemia
Ventilation and /or perfusion failure
Early hypoxemia
PaO2< 80 mmHg
Late hypoxemia number pao2
Pao2 <60 mmHg
Pa o2 norm
80-100
PaCo2 norm
35-45
If they are blowing out really fast they will be hypocapnic
If they are retaining CO then they will be hypercapnic
Alveolar blockage
Pulmonary edema
Pneumonia
ARDS
Cystic fibrosis
Perfusion blockage
PE( pulmonary embolism
airway obstruction
Asthma
COPD
Anaphylaxis
Atelectasis
Bronchospasm
Respiratory depression
Opioids overdose
Alveolar blockage, perfusion blockage , airway obstruction , respiratory depression all can contribute to what
Hypoxemia
Hypercapnia early
PaCO2 >45 mmHg
Or 50
Late hypercapnia
PaCO2 >50mmhg ( 55 0r 60 )
CNS conditions that cause hypercapnea
Spinal cord injury
Opioid OD
Neuromuscular conditions that cause hypercapnea
MS
ALS
Chest wall abnormalities that cause hypercapnea
Barrel chest
Kyphosis
Trauma - open thorax wound
( hitting the air bag on the wheel)
Air way or alveolar blockage that causes hypercapnea
COPD
Cystic fibrosis
What is important to keep in mind in a copd pt that has hypercapnea
That their PACO2 normally stays pretty high
S/s of resp failure early
“Must be hard reading dogs under worry”
Mental status changes
Breathing pattern changes ( Dyspnea , tachypnea)
HR and rhythm changes ( Tachy and hypertension)
Refusal to take oral fluids
Decrease urination (dogs under)
Wheezing or persistent coughing