CFRN EXAM WITH QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS | 2026/2027 LATEST UPDATE | GRADED A+
MI PATTERNS -
CORRECT|ANSWER
LISA P.
LATERAL: I,aVL, v5,v6 (LCA/RCA-high lateral wall L Vent)
INFERIOR: II, III, aVF (RCA-inferior & posterior wall L Vent)
SEPTAL: V1, V2 (LCA/bundle branches)
ANTERIOR: V3, V4 (LCA-anterior wall L Vent)
POSTERIOR: V1,V2,V3,V4:ST Depression (RCA/LCA-L Vent posterior wall)
Charles's Law -
CORRECT|ANSWER
Gas pressure increases as Temp increases
Gas expands in a heated tank
Henry 's Law -
CORRECT|ANSWER
Decompression
Dalton's Law -
CORRECT|ANSWER
Molecules shrink under pressure. It takes more molecules to fill the same space. More
altitude=more O2 needed.
Graham's Law -
CORRECT|ANSWER
Diffusion rate of gas thru a liquid is related to solubility of the gas. Higher to Lower Concentrations.
(mucous in the lungs with O2
Boyle's Law -
,CORRECT|ANSWER
Trapped gas expands with altitude. (Air splints, Chest tubes, ET Tubes, Bowels)
Gay-Lussac's Law -
CORRECT|ANSWER
Pressure in the tanks go down as temperature goes down
Murphy Sign -
CORRECT|ANSWER
Gallbladder, unable to take deep breath upon palpation under the right ribs.
Cullen Sign -
CORRECT|ANSWER
Retroperitoneal bleed, pancreatitis, Trauma, Bruising of the umbilicus.
Grey-Turner Sign -
CORRECT|ANSWER
Retroperitoneal bleed, pancreatitis, Trauma, Bruising of the flanks.
Asterixis -
CORRECT|ANSWER
Liver, Hepatitis, Hands held out and shaking
Cushing's Reflex -
CORRECT|ANSWER
Increased ICP, widening pulse pressure, bradycardia, resp changes (cheyne stokes).
RBC, HGB, HCT -
CORRECT|ANSWER
5, 15, 45
, WBC -
CORRECT|ANSWER
4000-10,000
PLT -
CORRECT|ANSWER
150,000-400,000
K+ (Potassium) -
CORRECT|ANSWER
3.5-5.0
Creat -
CORRECT|ANSWER
0.8-1.4
Glucose -
CORRECT|ANSWER
65-110
Cl (Cloride) -
CORRECT|ANSWER
95-105
Sodium -
CORRECT|ANSWER
135-145
BUN -
CORRECT|ANSWER
7-20
SOLUTIONS | 2026/2027 LATEST UPDATE | GRADED A+
MI PATTERNS -
CORRECT|ANSWER
LISA P.
LATERAL: I,aVL, v5,v6 (LCA/RCA-high lateral wall L Vent)
INFERIOR: II, III, aVF (RCA-inferior & posterior wall L Vent)
SEPTAL: V1, V2 (LCA/bundle branches)
ANTERIOR: V3, V4 (LCA-anterior wall L Vent)
POSTERIOR: V1,V2,V3,V4:ST Depression (RCA/LCA-L Vent posterior wall)
Charles's Law -
CORRECT|ANSWER
Gas pressure increases as Temp increases
Gas expands in a heated tank
Henry 's Law -
CORRECT|ANSWER
Decompression
Dalton's Law -
CORRECT|ANSWER
Molecules shrink under pressure. It takes more molecules to fill the same space. More
altitude=more O2 needed.
Graham's Law -
CORRECT|ANSWER
Diffusion rate of gas thru a liquid is related to solubility of the gas. Higher to Lower Concentrations.
(mucous in the lungs with O2
Boyle's Law -
,CORRECT|ANSWER
Trapped gas expands with altitude. (Air splints, Chest tubes, ET Tubes, Bowels)
Gay-Lussac's Law -
CORRECT|ANSWER
Pressure in the tanks go down as temperature goes down
Murphy Sign -
CORRECT|ANSWER
Gallbladder, unable to take deep breath upon palpation under the right ribs.
Cullen Sign -
CORRECT|ANSWER
Retroperitoneal bleed, pancreatitis, Trauma, Bruising of the umbilicus.
Grey-Turner Sign -
CORRECT|ANSWER
Retroperitoneal bleed, pancreatitis, Trauma, Bruising of the flanks.
Asterixis -
CORRECT|ANSWER
Liver, Hepatitis, Hands held out and shaking
Cushing's Reflex -
CORRECT|ANSWER
Increased ICP, widening pulse pressure, bradycardia, resp changes (cheyne stokes).
RBC, HGB, HCT -
CORRECT|ANSWER
5, 15, 45
, WBC -
CORRECT|ANSWER
4000-10,000
PLT -
CORRECT|ANSWER
150,000-400,000
K+ (Potassium) -
CORRECT|ANSWER
3.5-5.0
Creat -
CORRECT|ANSWER
0.8-1.4
Glucose -
CORRECT|ANSWER
65-110
Cl (Cloride) -
CORRECT|ANSWER
95-105
Sodium -
CORRECT|ANSWER
135-145
BUN -
CORRECT|ANSWER
7-20
