If you cannot maintain a SaO2 of 90 with a 30 FiO2, consider if your patient is in ARDS. If your patient has ARDS, your goal should be less than 6mL/KG of IBW based on height. (see table below) Your goal of tidal volume should be less than 8mL/KG of IBW based on height. To see how well you know the information, try the Quiz or Test activity. Do not guess height Use a tidal volume table or calculator. When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug.Īlthough it may feel like you're playing a game, your brain is still making more connections with the information to help you out. If you are logged in to your account, this website will remember which cards you know and don't know so that theyĪre in the same box the next time you log in.
LEFT ARROW - move card to the Don't know pile.You can also use your keyboard to move the cards as follows: If you've accidentally put the card in the wrong box, just click on the card to take it out of the box. When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again. Enter the target tidal volume in milliliters (mL). Evaluate daily for patients receiving mechanical ventilation and whose vent mode equals 1 or 2. If you knew the answer, click the green Know box. Target Tidal Volume: What is the target tidal volume based on PBW Quick reference tables are available on the last page of this document to calculate predicted body weight for tidal volume. Look at the large card and try to recall what is on the other side. Use these flashcards to help memorize information. If a patient has smoked 2 packs of cigarettes daily for the past 35 years, what would their pack year history be? How long will the cylinder last in minutes? in hours?Īn E cylinder is at 1400psi and the flow rate is 2.5L/minute.
Tidal volume calculator full#
What is the formula for Combined Gas law?Īn H cylinder is half full (full = 2200) and the patient is receiving oxygen via nasal cannula at 3L/min.
What is the patient's VD/VT if their PaCO2 is 58 mm HG with a mixed expired CO2 of 32 mm Hg? What is the patient's VD/VT if their PaCO2 is 40 mm HG with a mixed expired CO2 of 28 mm Hg? What is the formula for dead space/tidal volume ratio? If a patient's carbon dioxide production is normal and their PACO2 is 60mmHg, what would their alveolar ventilation be? If a patient's carbon dioxide production is normal and their PACO2 is 80mmHg, what would their alveolar ventilation be? PACO2 = VCO2 X 0.863 divided by VA(alveolar ventilation per minute) What is the formula for alveolar partial pressure of carbon dioxide (PACO2)? What is a normal carbon dioxide production? What would his alveolar ventilation/min be in Liters? The ventilatory parameters for 68kg man with a respiratory rate of 20, tidal volume 480 mL, vital capacity 2.7L. What would the alveolar ventilation per minute be?
What would his alveolar ventilation/minute be?Ī patient with a respiratory rate of 12, tidal volume of 500mL and weight is unknown. What is the formula for alveolar ventilation per minute?Īlveolar ventilation/min = respiratory rate x alveolar ventilation (tidal volume - dead space volume)Ģ0 year old male weighing 160 pounds with a respiratory rate of 12, tidal volume of 500 mL. What would his minute volume be in Liters? What would the minute volume be in Liters?Ī 78 year old male with a history of COPD has a respiratory rate of 20 and tidal volume of 650mL. Minute volume = respiratory rate x tidal volumeĪ 36 year old female with a respiratory rate of 12 and tidal volume of 500mL. What is the formula for minute ventilation? Tidal Volume: ranges between 6 x IBW mL/kg IBW and 8 x IBW mL/kg.Ģ) The second method determines alveolar ventilation based on carbon dioxide output and arterial carbon dioxide tension:Īlveolar Ventilation rate, measured in ml/min or L/min is a critical physiological variable in determining the concentrations of oxygen and carbon dioxide in functioning alveoli.Calculation Respiratory calculations Question.IBW female = 45.5kg + 2.3 x (height in inches – 60).IBW male = 50kg + 2.3 x (height in inches – 60).Tidal volume can be estimated based on ideal body weight, via height and gender:
Where V d = V t x (P ACO 2 – P ETCO 2) / P ACO 2 1) The first method determines alveolar ventilation based on tidal volume, pulmonary physiological dead space volume (from Bohr equation) and respiratory rate:
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