FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
What is the single most important indicator in critical illness? - ANSWER- tachypnea
Beck's Triad - ANSWER- hypotension, JVD, muffled heart sounds
- a/w cardiac tamponade
What is the thyromental distance? - ANSWER- It is the distance in finger breadths
between the anterior prominence of the thyroid cartilage (adam's apple) and the tip of
the mandible (chin). It is an estimate of the length of the mandible and the available
space anterior to the larynx
What does it mean when the thyromental space is < 3 fingerbreadths? - ANSWER- -
approx 6 cm
- indicates the larynx might be more anterior and therefore difficult to visualize during
laryngoscopy
** a more acute angulation of the stylet at the distal end of the endotracheal tube may
be helpful.
Patient is apneic w/ a pulse. What do you do? - ANSWER- Bag them.
- One handed bag compressions should be delivered 10-20 times per min. Each
compression should take place over 1 second.
** If patient starts spontaneously breathing, try to be synchronous with their respiratory
efforts.
** If/once the patient is breathing easily and adequate Vt are being inhaled, enough to
produce minute ventilation, stop bagging.
What is the goal of manual mask ventilation? - ANSWER- to provide adequate minute
ventilation: the product of the tidal volume delivered during each resuscitation bag
compression and the number of compressions per min.
** The total gas volume within most adult resus bags is 1 to 1.5 LITERS
,FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
Bag mask should be connected to ________% oxygen and flow at a rate of _______ -
ANSWER- 100% oxygen at a rate of 15L/min
HFNC - ANSWER- - Uses up to 100% oxygen source
- Provides higher amounts of FIO2 (0.32-1.0) in patients with high minute ventilation
requirements by matching patient's inspiratory demands and minimizing air dilution
- These devices also can generate PEEP (that is difficult to measure; can cause
barotrauma in theory)
- Flow rates up to 60L/min
- heated and humidified oxygen
NRB - ANSWER- - AKA Reservoir Face Mask
- Bag is filled with 100% oxygen from a supply source (tank)
- The flow rate must be adjusted so that the bag remains completely or partially
distended throughout the respiratory cycle
- When the mask is properly applied, oxygen delivery can be maximized but rarely
exceeds a FIO2 of 0.6 to 0.9
- One way flap valves minimize entrapment of room air which dilutes FiO2
- NRB is a high oxygen high, flow device.
- non humidified oxygen
** commonly used to improve oxygenation in patients with severe hypoxemia until
further eval and treatments are accomplished.
Aerosol Face Mask - ANSWER- - This mask has large side holes, the mask itself is
attached to large bore tubing to a nebulize that blends 100% oxygen and room air to
deliver a PRESET FIO2 level (done by dial on oxygen adapter)
- If the entire aerosol mist disappears from the mask during. inhalation, the patient's
inspiratory flow demands are probably exceeding the capacity of the nebulizer and room
air is being entrained.
- minimum flow rate = 8L/min
- Max FIO2 = 40-60%
- This is a variable oxygen, moderate-flow device.
Simple Face Mask - ANSWER- - minimum flow rate: 6L/min (to clear CO2 from mask)
- humidified O2
- Approx. concentrations L to FIO2 ratios:
6L = 40%
7L = 50%
8L = 60%
,FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
Venturi Face Mask - ANSWER- - aka air entrainment face mask
- delivers O2 through a jet mixing device that increases the velocity of oxygen and
causes a controlled entrainment
- the FiO2 can be more precisely controlled from .24 to .5 (24% to 50%) at high flow
rates simply my selecting the interchangeable nozzle and adjusting the O2 flow rate
- this is a high flow, controlled oxygen device.
Nasal Cannula flow rate to FIO2 estimates if RR and tidal volumes are normal -
ANSWER- 1L = 24%
2L = 28%
3L = 32%
4L = 36%
5L = 40%
6L = 44%
NPPV uses two levels of positive airway pressure, combining modalities of pressure
support ventilation and what? - ANSWER- CPAP
What is CPAP? - ANSWER- continuous positive airway pressure
- Allows spontaneous breathing from a gas source at an elevated baseline system
pressure (higher than atmospheric pressure)
- Functionally equivalent to PEEP.
By convention, PSV mode is referred to as _______ and CPAP is referred to as
_______ when talking about NPPV/BIPAP - ANSWER- PSV = IPAP
CPAP = EPAP
The difference between these two numbers determines the tidal volume generated.
Initiation of NPPV guidelines - ANSWER- - Do not delay intubation if needed and keep
in mind the patient's resuscitation status.
- Consider ABG analysis prior to initiation.
- Explain the procedure.
- Keep head of bed at ≥45°.
- Ensure appropriate mask or helmet size.
, FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
- Assess the patient's tolerance of the mask by applying it by hand before securing the
harness.
- Adjust the difference between EPAP and IPAP to achieve and effective VT and CO2
clearance. Adjust EPAP for alveolar recruitment in increments of 2 cm H2O per step to
improve oxygenation. Depending on the ventilator, a similar increase in IPAP may be
required to maintain the same VT.
- If assist-control volume ventilation is used, begin with a VT of 6 to 8 mL/kg (depending
on the underlying pulmonary condition).
- Titrate pressures, volume, and FIO2 to achieve appropriate pH, PaO2, and PaCO2
levels. Ventilator changes can be made every 15 to 30 minutes.
- Follow vital signs, pulse oximetry, mental status, clinical appearance, and ABG (if
indicated).
- Remember that goals of NPPV may include a respiratory rate <30 breaths/min, VT >7
mL/kg of predicted body weight, improved gas exchange, and patient comfort.
- It is also important to be cognizant that IPAP > 20 cm H2O may lead to gastric
distension.
What are the goals of NPPV? - ANSWER- The goals of NPPV may include a
- respiratory rate <30 breaths/min
- VT >7 mL/kg of predicted body weight
- improved gas exchange
- patient comfort.
Initial NPPV settings - ANSWER- Use the following initial ventilator settings:
- Mode: Spontaneous
- Trigger: Maximum sensitivity
- FIO2: 1.00
- (PEEP) EPAP: 4-5 cm H2O
** (higher levels are poorly tolerated initially)
- (PSV) IPAP: 10-15 cm H2O
- Backup rate: Start at 6/min
CPAP indications, pros, cons - ANSWER- - CPAP alone can also be delivered
noninvasively but does not provide support of ventilation.
Support) EXAM 250 answers covered
correct and complete.
FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
What is the single most important indicator in critical illness? - ANSWER- tachypnea
Beck's Triad - ANSWER- hypotension, JVD, muffled heart sounds
- a/w cardiac tamponade
What is the thyromental distance? - ANSWER- It is the distance in finger breadths
between the anterior prominence of the thyroid cartilage (adam's apple) and the tip of
the mandible (chin). It is an estimate of the length of the mandible and the available
space anterior to the larynx
What does it mean when the thyromental space is < 3 fingerbreadths? - ANSWER- -
approx 6 cm
- indicates the larynx might be more anterior and therefore difficult to visualize during
laryngoscopy
** a more acute angulation of the stylet at the distal end of the endotracheal tube may
be helpful.
Patient is apneic w/ a pulse. What do you do? - ANSWER- Bag them.
- One handed bag compressions should be delivered 10-20 times per min. Each
compression should take place over 1 second.
** If patient starts spontaneously breathing, try to be synchronous with their respiratory
efforts.
** If/once the patient is breathing easily and adequate Vt are being inhaled, enough to
produce minute ventilation, stop bagging.
What is the goal of manual mask ventilation? - ANSWER- to provide adequate minute
ventilation: the product of the tidal volume delivered during each resuscitation bag
compression and the number of compressions per min.
** The total gas volume within most adult resus bags is 1 to 1.5 LITERS
,FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
Bag mask should be connected to ________% oxygen and flow at a rate of _______ -
ANSWER- 100% oxygen at a rate of 15L/min
HFNC - ANSWER- - Uses up to 100% oxygen source
- Provides higher amounts of FIO2 (0.32-1.0) in patients with high minute ventilation
requirements by matching patient's inspiratory demands and minimizing air dilution
- These devices also can generate PEEP (that is difficult to measure; can cause
barotrauma in theory)
- Flow rates up to 60L/min
- heated and humidified oxygen
NRB - ANSWER- - AKA Reservoir Face Mask
- Bag is filled with 100% oxygen from a supply source (tank)
- The flow rate must be adjusted so that the bag remains completely or partially
distended throughout the respiratory cycle
- When the mask is properly applied, oxygen delivery can be maximized but rarely
exceeds a FIO2 of 0.6 to 0.9
- One way flap valves minimize entrapment of room air which dilutes FiO2
- NRB is a high oxygen high, flow device.
- non humidified oxygen
** commonly used to improve oxygenation in patients with severe hypoxemia until
further eval and treatments are accomplished.
Aerosol Face Mask - ANSWER- - This mask has large side holes, the mask itself is
attached to large bore tubing to a nebulize that blends 100% oxygen and room air to
deliver a PRESET FIO2 level (done by dial on oxygen adapter)
- If the entire aerosol mist disappears from the mask during. inhalation, the patient's
inspiratory flow demands are probably exceeding the capacity of the nebulizer and room
air is being entrained.
- minimum flow rate = 8L/min
- Max FIO2 = 40-60%
- This is a variable oxygen, moderate-flow device.
Simple Face Mask - ANSWER- - minimum flow rate: 6L/min (to clear CO2 from mask)
- humidified O2
- Approx. concentrations L to FIO2 ratios:
6L = 40%
7L = 50%
8L = 60%
,FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
Venturi Face Mask - ANSWER- - aka air entrainment face mask
- delivers O2 through a jet mixing device that increases the velocity of oxygen and
causes a controlled entrainment
- the FiO2 can be more precisely controlled from .24 to .5 (24% to 50%) at high flow
rates simply my selecting the interchangeable nozzle and adjusting the O2 flow rate
- this is a high flow, controlled oxygen device.
Nasal Cannula flow rate to FIO2 estimates if RR and tidal volumes are normal -
ANSWER- 1L = 24%
2L = 28%
3L = 32%
4L = 36%
5L = 40%
6L = 44%
NPPV uses two levels of positive airway pressure, combining modalities of pressure
support ventilation and what? - ANSWER- CPAP
What is CPAP? - ANSWER- continuous positive airway pressure
- Allows spontaneous breathing from a gas source at an elevated baseline system
pressure (higher than atmospheric pressure)
- Functionally equivalent to PEEP.
By convention, PSV mode is referred to as _______ and CPAP is referred to as
_______ when talking about NPPV/BIPAP - ANSWER- PSV = IPAP
CPAP = EPAP
The difference between these two numbers determines the tidal volume generated.
Initiation of NPPV guidelines - ANSWER- - Do not delay intubation if needed and keep
in mind the patient's resuscitation status.
- Consider ABG analysis prior to initiation.
- Explain the procedure.
- Keep head of bed at ≥45°.
- Ensure appropriate mask or helmet size.
, FCCS (Fundamentals of Critical Care
Support) EXAM 250 answers covered
correct and complete.
- Assess the patient's tolerance of the mask by applying it by hand before securing the
harness.
- Adjust the difference between EPAP and IPAP to achieve and effective VT and CO2
clearance. Adjust EPAP for alveolar recruitment in increments of 2 cm H2O per step to
improve oxygenation. Depending on the ventilator, a similar increase in IPAP may be
required to maintain the same VT.
- If assist-control volume ventilation is used, begin with a VT of 6 to 8 mL/kg (depending
on the underlying pulmonary condition).
- Titrate pressures, volume, and FIO2 to achieve appropriate pH, PaO2, and PaCO2
levels. Ventilator changes can be made every 15 to 30 minutes.
- Follow vital signs, pulse oximetry, mental status, clinical appearance, and ABG (if
indicated).
- Remember that goals of NPPV may include a respiratory rate <30 breaths/min, VT >7
mL/kg of predicted body weight, improved gas exchange, and patient comfort.
- It is also important to be cognizant that IPAP > 20 cm H2O may lead to gastric
distension.
What are the goals of NPPV? - ANSWER- The goals of NPPV may include a
- respiratory rate <30 breaths/min
- VT >7 mL/kg of predicted body weight
- improved gas exchange
- patient comfort.
Initial NPPV settings - ANSWER- Use the following initial ventilator settings:
- Mode: Spontaneous
- Trigger: Maximum sensitivity
- FIO2: 1.00
- (PEEP) EPAP: 4-5 cm H2O
** (higher levels are poorly tolerated initially)
- (PSV) IPAP: 10-15 cm H2O
- Backup rate: Start at 6/min
CPAP indications, pros, cons - ANSWER- - CPAP alone can also be delivered
noninvasively but does not provide support of ventilation.
