PCM Stations

Question 1

Percent of O2 in room air

Answer 1

21%

Question 2

supplemental O2 is necessary when pO2 is below _ mmHg or spO2 below _ mmHg

Answer 2

60 and 90

Question 3

supplemental O2 is humidified with _ to prevent drying

Answer 3

saline

Question 4

what is the flow rate and percent of O2 administered via Nasal cannula?

Answer 4

1L/min = 24% O2
plus 4% for each L/min. For example
1L= 24% O2
2L = 28
3L = 32
4L = 35%
5L = 40%
6L= 44%

Question 5

which type of oxygen mask is without reservoir and ambient gases can be pulled back in. has open ports on both sides of mask for ambient air flow

Answer 5

Rebreather mask

Question 6

what is the percent of O2 and rate of rebreather masks?

Answer 6

6L/min = 44% O2
7L/min = 48%
8L/min = 52%
9L/min = 56%
10L/min = 60%

Question 7

which type of oxygen mask has reservoir and ambient gasses cannot be pulled back in. It’s a one way valve from bag to the mouth. Its often used to avoid intubation in pts who cannot open their mouth or have sufficient excursion to breathe on their own

Answer 7

Non-rebreather

Question 8

What is the flow rate and percent of O2 with non-rebreather masks

Answer 8

6l/min = 60%
7L/min = 70%
8L/min = 80%
9L/min = 90%
10L/min = 100% O2

Question 9

which type of oxygen masks are used in pts that are hypercapnic with moderate hypoxemia. used esp in COPD pts; allows for highly regulated flow rates

Answer 9

Venturi mask. arterial blood gases and spO2 must be continually monitored

Question 10

normal forced expiratory flow is _ L/min

Answer 10

385

Question 11

A narrow curve on PFT indicates

Answer 11

restrictive disease (loss of elasticity)

Question 12

A scooped out curve on PFT indicates

Answer 12

Obstructive disorders (loss of recoil)

Question 13

what drug challenge can diagnose asthma?

Answer 13

methacoline

Question 14

what is the albuterol test used for?

Answer 14

COPD. improvement of PFT by 12% or 200cc after bronchodilators

Question 15

when determining rhythm, indicate what normal and abnormal for each of the following
A. PR interval
B. QRS complex
C. QT interval

Answer 15

A. Normal <0.2. elongated = First degree AV block; progressive elongation with dropped QRS = 2nd degree AV block; no association between P wave and QRS complex = third degree block

B. Normal <0.12. Longer = BBB block
C. normal = < 0.44; prolonged b electrolyte abnormality, congenital disease, acute MI. elongation –> torsades de points (antipsychotics, abx, antiarhythmics)

Question 16

what is the arterial supply for
A. Anterior leads
B. inferior leads
C. Lateral leads

Answer 16

A. LAB
B. R. coronary
C. Circumflex

Question 17

Peaked T waves indicates

Answer 17

hyperkalemia

Question 18

How is MI treated?

Answer 18

MONA -B

Question 19

when interpreting a Chest xray: what’s the first step?

Answer 19

confirm name and DOB, and date of xray

Question 20

in what order should Xrays be read?

Answer 20

DRSABCDE
D= details (name DOB, date)
R = RIPE (Radiation, Integration, Picture (angle/approach), Exposure (over or under penetration)
S = soft tissue and bones (ensure trachea is laying over spinous processes
A = airways (mediastinum size/space, heart should not be more than 1/2 mediastinum)
B = Breathing (lung fields; infiltates, masses, airfluid levels, pleura; heorrhage, consdiliations)
C = Circulation (heart blocks)
D = Diaphragm (ensure proper excursion; 6-7 rib spaces to diagphram, costodiaphragmatic angle; shallow angles indicates pleural effusion
E = extras