ACP COPR- Airway/scores/Basic Exam
Questions with Reviewed Correct Detailed
Answers
02 Cylinder Constant Equation
D: 0.16
E: 0.28
M: 1.56
Equation: ((PSI - 200) x tank constant) / flow, LPM
02 Delivery
NC: 1-6LPM, 24-48% FIO2
Venturi: 6-12LPM, 24-50%
NRB: 15LPM, 90-100%
BVM: 15LPM, 100%
Lung Capacities
Total: 6L
Vt: 5-7ml/kg (Adults), 6-8ml/kg (Peds)
Minute Volume (Vm) = RR x Vt
Alveolar Vm: Va - dead space x RR
Inspiratory reserve volume
Amount forcibly inhaled after Vt
Functional Residual Volume
Amount forced after normal exhalation
Expiratory Reserve volume
Air exhaled after normal exhalation
, Residual Capacity
Air remaining after forcible exhalation
Ventilation Mechanics and Control
Regulated by pH of CSF (directly related to PaC02) Receptors in carotid and aortic bodies measure PaC02
and signal resp enters via CN 9+10
Pons:
Apneustic - stimulates long deep breaths. Antagonized by stretch receptors and pneumotaxic centre
Pneumotaxic - inhibits resps, finely controls resps
Medulla: HR, RR, BP
Motor nerves: Phrenic and intercostal
Signs of inadequate respiration
<12 or >20 breaths/min
Shallow respirations
Altered mental status
Cyanosis
Respirations and Gases
External - lungs and blood stream
Internal - blood to tissues
97% 02 bound to Hgb, remaining is dissolved in serum. Majority of C02 is transported in serum as HC03
and approx 33% bound to Hgb
Ventilation Rates
Adult: 12-20
Child: 15-30
Infant: 25-50
Cheyne stokes
crescendo and decresencdo rate and volume, brain stem injury
Kussmaul
Questions with Reviewed Correct Detailed
Answers
02 Cylinder Constant Equation
D: 0.16
E: 0.28
M: 1.56
Equation: ((PSI - 200) x tank constant) / flow, LPM
02 Delivery
NC: 1-6LPM, 24-48% FIO2
Venturi: 6-12LPM, 24-50%
NRB: 15LPM, 90-100%
BVM: 15LPM, 100%
Lung Capacities
Total: 6L
Vt: 5-7ml/kg (Adults), 6-8ml/kg (Peds)
Minute Volume (Vm) = RR x Vt
Alveolar Vm: Va - dead space x RR
Inspiratory reserve volume
Amount forcibly inhaled after Vt
Functional Residual Volume
Amount forced after normal exhalation
Expiratory Reserve volume
Air exhaled after normal exhalation
, Residual Capacity
Air remaining after forcible exhalation
Ventilation Mechanics and Control
Regulated by pH of CSF (directly related to PaC02) Receptors in carotid and aortic bodies measure PaC02
and signal resp enters via CN 9+10
Pons:
Apneustic - stimulates long deep breaths. Antagonized by stretch receptors and pneumotaxic centre
Pneumotaxic - inhibits resps, finely controls resps
Medulla: HR, RR, BP
Motor nerves: Phrenic and intercostal
Signs of inadequate respiration
<12 or >20 breaths/min
Shallow respirations
Altered mental status
Cyanosis
Respirations and Gases
External - lungs and blood stream
Internal - blood to tissues
97% 02 bound to Hgb, remaining is dissolved in serum. Majority of C02 is transported in serum as HC03
and approx 33% bound to Hgb
Ventilation Rates
Adult: 12-20
Child: 15-30
Infant: 25-50
Cheyne stokes
crescendo and decresencdo rate and volume, brain stem injury
Kussmaul
