Review deck 3 Flashcards
Joules to shock an open heart is at
10-30 J
HPV works to
divert blood away from hypoxic regions of the lung, decreased blood flow to the non-ventilated lung, helps improve arterial oxygen content–>
improving hypoxemia, decreases shunt
Blood flow distribution in two lung ventilation is
40% in nondependent and 60% in dependent
Isoflurane shifts blood flow in the lungs to
20% in the upper lung & 80% in the lower lung
_________ can inhibit HPV which is why you may see a drop in SPO2
nitroglycerin
Describe which double lumen tube is more difficult to place.
a right tube
With inhalation anesthestics, 1 MAC leads to a ____ in shunt
4% increase
If you have placed a left tube & you clamp the tracheal cuff, you should hear breath sounds on
the left but not the right
The most common problem encountered when positioning a right endobronchial tube is
excluding the right upper lobe from ventilation
The minimal predicted postoperative FEV1 necessary for long-term survival is
800-1000 mL
The systemic syndromes of mediastinal tumors can be related to
hypertension, myasthenia gravis, myasthenic syndrome, ectopic parathyroid hormone, hypercalcemia
Prior to instituting OLV, it is important to
always get baseline ABG
The greatest risk with OLV management is
hypoxemia
If you have high peak inspiratory pressures,
check ETT position
reduce VT
increase RR to maintain minute ventilation
If hypoxemia is occurring during OLV, then you can
add CPAP to collapsed lung
If you are going to keep a patient intubated after a OLV procedure, then you must
exchange the tube to a single lumen tube
The most likely intraoperative complications of thoracoscopic procedures is
gas embolism into venous circulation
For a mediastinoscopy, it is important to
keep pulse ox & a-line on the right arm and ask surgeon to reposition mediatinoscope if absent waveform due to poor cerebral perfusion
For a patient presenting for mediastinoscopy who lays down and has respiratory distress,
sit them up
The most common complication of mediastinoscopy is
mediastinal hemorrhage
ECG leads to monitor are
II & V5
Vagally- mediated reflex bradycardia from compression of trachea or great vessels may occur and you should
tell the surgeon to stop & give glyco
Cardiac oxygen utilization can be decreased by
anesthesia
hypothermia
cardioplegia
Cardioplegia can cause issues with
renal patients due to high K
