Respiratory Flashcards
What are critical blood gas results?
Ph less than 7.2, Paco2 >55, Pa02 <60
Calculate minute volume
Minute Volume (Ve) = Tidal Volume (Vt) x Rate (f)
S/S of Acute Resp Distress?
Rapid, shallow breathing, accessory muscle use, tripod, decrease minute volume, critical ABG results, changing breath sounds
What is a shunt?
No perfusion of alveolar beds causing no gas exchange
Classic Pulmonary Embolism patients
Smokers, birth control, surgery, cancer, pregnant, obese
Treatment of P.E.
High flow 02, Lovenox/Heparin, Fibrinolysis (TPA), Surgery
Signs of P.E.
Acute Resp Distress, Spo2 not responding to high flow 02. Elevated D-Dimer.
S/S of COPD/Asthma/Bronchitis
Bronchoconstriction, Hypersecretion and edema, Trouble breathing OUT
Treatment of COPD/Asthma/Bronchitis
Albuterol, Atrovent, Magnesium sulfate, Steroids. Ketamine for induction agent (bronchodilator)
Increase I:E ratio to 1:3 or 1:4
Causes of Pneumonia
Ventilator acquired VS Community acquired. Can be viral, bacterial, or fungal.
Treatment of Pneumonia
O2, IV antibiotics, HOB elevation of 30*, Suction mouth and upper airway PRN, Supportive treatment.
Define Adult Respiratory Distress Syndrome (ARDS)
Hyperpermeable pulmonary capillaries causing interstitial fluid build up causing separation of alveoli and capillary bed (shunt forms).
Treatment of ARDS
PEEP of 5-20, Recruit alveoli and provide O2, Monitor PIP, Vt, and Pplat.
What is normal tidal volume for the obstructive approach to ventilator management?
6-10 ml/kg
Clinical signs of Pneumothorax
SOB, Absent lung sounds on one side, JVD, hypotension, tachycardia.
Treatment of Pneumothorax
Remove from Vent / PPV! Needle chest decompression or chest tube.
Criteria for Intubation
Current airway patency (trauma, unable to swallow)
Oxygenation or Ventilation failure (pH <7.2, Co2>55, PaO2 <60)
Expected clinical course
Gcs<8
Ventilator CMV mode
Delivers Vt or PIP at preset rate. Cannot initiate breaths.
Ventilator AC mode
Delivers preset Vt or PIP. Able to trigger full breaths. Can cause breath stacking or autopeep.
Ventilator IMV mode
Provides preset Vt or PIP while allowing patient to take own breath and volume without delivering full breath.