Random Shit To Know

Question 0

How is MAP calculated?

Answer 0

(Diastolic x 2) plus the systolic

Divided by three!!!

Question 1

Tell me about cyanide toxicity!

Answer 1

There’s a risk of cyanide toxicity when infusing SNP - the cyanide accumulates in the blood stream.

Sx are: behavioral changes, impaired O2 extraction, obtundation, seizures, and lactic acidosis.

Question 2

Tell me about ICP!

Answer 2

Intracranial pressure is the pressure within the rigid skull!
WNL < 20mmHg
Decrease it by: lowering agitation, proper head placement, HOB at 30degrees, lower T if febrile, check CSF drain if present, raise MAP, last resort is hyperventilation to decrease CO2.

Question 3

Tell me about CPP!!!

Answer 3

Cerebral Perfusion Pressure is the pressure driving blood through the brain, aka the cerebral blood flow.

CPP = MAP - ICP

WNL 70-90mmHg

Raised by increasing MAP or decreasing ICP!

Question 4

What is normal SVR?

Answer 4

SVR 800 - 1300

Question 5

What are adrenegic drugs?

Answer 5

An Adrenergic is a drug that has similar effects to, or the same as, epinephrine/ adrenaline!

Question 6

What are cholinergics?

Answer 6

Cholinergics are synapses that use acetylcholine as its neurotransmitter.

The parasympathetic nervous system is entirely Cholinergic!!!!!! (Rest and Digest!)

Question 7

What are Catecholamines?

Answer 7

Catecholamines are sympathomimetic amines, that “mimic” the sympathetic nervous system.

Question 8

What are the first three branches off the aorta?

Answer 8

1. Brachiocephalic artery (branches into the right subclavian artery and the right common carotid artery).
2. Left common carotid artery.
3. Left subclavian artery.

Question 9

How does an IABP a work?

Answer 9

Balloon deflates in systole - which increases forward blood flow by reducing after load through a vacuum effect.

Balloon inflates in diastole - which increases blood flow to the coronary arteries via retrograde flow.

Question 10

Tell me about ECMO!

Answer 10

Two types of ECMO:

1. VA ECMO - supports both heart and lungs.
2. VV ECMO - supports lungs only.

Question 11

What is a Train Of Four?

Answer 11

A Train Of Four is a tool used for measuring neuromuscular blockade. Four stimuli are delivered along the path of a nerve, and the response of the muscle is measured.

Four equal muscle contractions will result of there if no neuromuscular blockade.
Two twitches seen means that 80% of the receptors are blocked.