Question of the Day

Question 1

Where are parasympathetic pre-ganglionic fibers found?

Answer 1

CN 3, 7, 9, 10

Sacral nerves 2, 3, 4

Question 2

During intraoperative fluoroscopy, the patient receives 32 mR at a distance of 1 foot from the fluoroscopy tube. The maximum radiation dose possible to the anesthesia provider, at a distance of 4 feet is:

Answer 2

2 mR

i(1)D(1) ^2 = i(2)D(2)^2

Question 3

The use of non-ionic gadolinium contrast media during MRI is associated with what ADR?

Answer 3

nausea

*also, be cautious when used with patients undergoing MRI with ferromagnetic implants, which may include pacemakers/AICDs

Question 4

In a 6 year old, the appropriate depth of an endotracheal tube is:

Answer 4

15

(age/2) + 12

Question 5

as compared with plasma osmolality, hypertonic crystalloid solutions include

Answer 5

D5 0.45 NS = 400 mOsm

normal plasma osmolality = 280 -290

Question 6

plasma osmolality of LR and D5 0.25 NS

Answer 6

273 and 355

Question 7

selective adrenergic stimulation of B2 receptor results in

Answer 7

increased insulin secretion
bronchodilation
salivary gland secretion
decreased upper GI motility
gluconeogenesis
pupillary dilation
detrusor muscle relaxation

Question 8

s/s associated with hypercortisolism include

Answer 8

metabolic alkalosis, osteoporosis, central obesity, HTN, weakness, bruising

Question 9

s/s associated with mineralocorticoids

Answer 9

fluid retention

hypokalemic alkalosis

Question 10

pancreatic somatostatin producing cells in the Islets of Langerhans are:

Answer 10

delta cells

Question 11

Name the four types of cells in the islets of langerhans

Answer 11

alpha = glucagon
beta = insulin
delta = somatostatin
PP cells = pancreatic polypeptide

Question 12

CHD associated with right - to - left shunting includes

Answer 12

(CYANOTIC)

tricuspid atresia
hypoplastic left heart syndrome
TOF
pulmonary atresia
transposition of great vessels
truncus arteriosus 
single ventricle
double outlet ventricle

Question 13

recommended maximum leakage current in OR

Answer 13

10 uA

Question 14

How is hypoxemia treated most effectively during OLV?

Answer 14

periodic inflation of the collapsed lung (1)
early ligation of the ipsilateral PA (2)
CPAP to collapsed lung (3)

Question 15

what paralytic should be used for maintenance in ESRD during a lap. hysterectomy?

Answer 15

cisatracurium

• vec = active metabolite excreted renally
• roc = variable duration and renal excretion

Question 16

Sympathetic blockade during acute herpes zoster has been shown to:

Answer 16

reduce the incidence of postherpetic neuralgia; reduce analgesic requirements overall

Question 17

branches of the femoral nerve anesthetized during an ankle block include

Answer 17

saphenous nerve

Question 18

what are the four sciatic nerves innervating the foot

Answer 18

deep peroneal
posterior tibial
sural
superficial peroneal

Question 19

an anxiolytic herbal medication associated with a decrease in the requirement of IA is:

Answer 19

valerian, kava

Question 20

decrease in pseudocholinesterase activity associated w/

Answer 20

1. panc
2. esmolol
3. reglan
4. neostigmine
5. oral contraceptives

Question 21

n20 PSIG and L

Answer 21

1590 L
745 PSIG

once it falls below 745, there is only 400 L left

Question 22

the formation of metanephrine is the result of:

Answer 22

CATECHOL-O-METHYLTRANSFEREASE METABOLISM OF EPI

COMT metabolizes epinephrine –> metanephrine and norepinephrine –> normetanephrine

MAO metabolizes metanephrine & normetanephrine –> VMA

Question 23

what causes the plateau phase of cardiac muscle cells?

Answer 23

slower calcium channels

Question 24

describe autonomic hyperreflexia

Answer 24

lesion above T5 - T8
regional anesthesia + deep GA are effective in the prevention

ADR: pulmonary edema, MI, cerebral hemorrhage

Question 25

EKG changes associated with hypokalemia

Answer 25

T wave flattens
ST segment depression
increased P wave amplitude
PR prolongation
prominent U waves