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NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION $27.99   Add to cart

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NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION

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  • NBME CBSE

NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION

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  • September 30, 2024
  • 38
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NBME CBSE
  • NBME CBSE
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NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION

abetalipoproteinemia - CORRECT ANSWERS AR mutation in gene that encodes microsomal transfer
protein (MTP).

Chylomicrons, VLDL, LDL are absent; deficiency in ApoB48 and ApoB100

Infants present with failure to thrive, fat malabsorption, steatorrhea.

Later manifestations include retinitis pigments, spinocerebellar degeneration due to vit E deficiency,
progressive ataxia, acanthocytosis.



Intestinal biopsy shows lipid laden enterocytes



Hyperchylomicronemia (Type I familial dyslipidemia) - CORRECT ANSWERS Deficient Lipoprotein
lipase or apoC-II



Very high chylomicrons, TG, cholesterol



Pancreatitis, hepatosplenomegaly, xanthomas, creamy later in supernatant



Familial hypercholesterolemia (type 2 familial dyslipidemia) - CORRECT ANSWERS AD absence or
defective LDL receptors or ApoB-100



High LDL and cholesterol (300-700)



At risk for accelerated atherosclerosis and CVA

xanthomas

corneal arcus



Dysbetalipoproteinemia (type III familial dyslipidemia) - CORRECT ANSWERS Defective ApoE,
autosomal recessive



High chylomicrons, VLDL

,NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION

Premature atherosclerosis

Xanthomas



Hypertriglyceridemia (type IV familial dyslipidemia) - CORRECT ANSWERS AD; overproduction of
hepatic VLDL



High VLDL and TGs (>1000 mg/dL)



Acute pancreatitis



Bulbus cordis - CORRECT ANSWERS Smooth parts (outflow tract) of left and right ventricles



endocardial cushions - CORRECT ANSWERS Atrial septum, membranous interventricular septum; AV
and semilunar valves



neural crest



left horn of the sinus venosus - CORRECT ANSWERS coronary sinus



posterior, sub cardinal, and supra cardinal veins - CORRECT ANSWERS IVC



Right common cardinal vein and right anterior cardinal vein - CORRECT ANSWERS SVC



Right horn of sinus venosus - CORRECT ANSWERS Smooth part of right atrium (sinus venarum)



Patent foramen ovale - CORRECT ANSWERS failure of septum primum and septum secundum to
fuse after birth



Transposition of the great vessels

,NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION
Tetralogy of Fallot

Persistent truncus arteriosus - CORRECT ANSWERS Conotruncal abnormalities associated with
failure of neural crest cells to migrate



ductus venosus - CORRECT ANSWERS connects the umbilical vein to the inferior vena cava,
bypassing the liver



becomes ligamentum venosum



phrenic nerve - CORRECT ANSWERS innervates the diaphragm and pericardium



S3 heart sound - CORRECT ANSWERS Increased ventricular filling pressure (e.g., mitral regurgitation,
HF), common in dilated ventricles



normal in kids and pregnant women



S4 heart sound - CORRECT ANSWERS atrial kick late diastole, right before S1



best heard at apex in LLD position



High atrial pressure.



Stiff/hypertrophic ventricle (aortic stenosis, restrictive cardiomyopathy)



Always abnormal



atria contract - CORRECT ANSWERS a wave of JVP



c wave - CORRECT ANSWERS RV contraction (closed tricuspid valve bulging into atrium) wave of JVP

, NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION
x descent - CORRECT ANSWERS JVP wave corresponding to downward displacement of closed
tricuspid valve during rapid ventricular ejection phase



reduced or absent in tricuspid regurge



V wave - CORRECT ANSWERS JVP wave corresponding to inc'd RA pressure due to filling against
closed tricuspid valve



y descent - CORRECT ANSWERS JVP wave corresponding to RA emptying into RV



absent in cardiac tamponade



plusus parvus et tardus - CORRECT ANSWERS pulses are weak with delayed peak



Aortic stenosis



PR interval - CORRECT ANSWERS 0.12-0.20 seconds



120 milliseconds



QT interval length - CORRECT ANSWERS 9 - 11 squares = .36 to .44 seconds



Hypokalemia - CORRECT ANSWERS U wave present on ECG



Mg sulfate - CORRECT ANSWERS for torsades de pointe, hypokalemia (can lengthen QT and cause
torsades), and pre-eclampsia (prevent seizures)



Romano-Ward syndrome - CORRECT ANSWERS -Congenital long QT syndrome

-Autosomal dominant, pure cardiac phenotype (no deafness).

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