Anesthesia for Orthopedic Surgery Flashcards
The frequency of neurologic injuries following scoliosis correction is approximately _%?
1%
2 tests used to monitor spinal cord integrity.
Neurophysiologic monitoring
Wake up test
Orthopedic patients are at high risk for thromboembolic complications, with the highest risk reported among?
hip fracture patients
The _____ cervical segment is perhaps the most important in providing clinical evidence of cervical spinal injury.
This segment controls motor function of the deltoid, biceps, brachialis, and brachioradialis muscles.
If these muscles are laccid, the ___ cervical nerve is involved, and there will be partial diaphragmatic
paralysis.
Fifth
The most common cause of death with acute cervical
spinal cord injury is ______?
Respiratory failure
Lesions between ____ cause signiicant alterations in respiratory function, owing to the loss of abdominal and intercostal support.
C5 and T7
The indrawing of flaccid thoracic muscles during inspiration produces paradoxical respirations, resulting in a vital capacity reduction of ___%
60%
Level of carioaccelerator fibers? Range
T1-T4
Hyperkalemia may develop after administration of succinylcholine to a patient with spinal cord injury.
It is considered safe to administer succinylcholine for the irst ___ hours.
48
Reason of hyperkalemia in spinal cord injury patients?
The increases in serum potassium are maximal between ___ and ___ after spinal injury.
there is a proliferation of acetylcholine receptors in the muscle, and they become supersensitive to depolarizing muscle relaxants.
4 weeks and 5 months
In spinal cord injury patient, serum potassium levels
may increase from normal to as high as _____, causing ventricular fibrillation or cardiac arrest.
14 mEq/L
The inability to regulate core body temperature
Poikilothermia
After recovery from spinal shock, 85% of patients exhibit autonomic hyperrelexia when there has been complete cord transection above ___? This is called?
Many patients with spinal injuries and autonomic hyperrelexia will report characteristic headaches with bladder distention.
T5
Autonomic hyperreflexia
If autonomic hyperrelexia occurs, it should be treated by (3)
Removal of the stimulus
Deepening anesthesia
Administration of direct-acting vasodilators
The severity of scoliosis is defined by the angle of scoliosis ____?
Cobb angle
