Most Common Causes

Question 1

What is the most common cause of native valve endocarditis?

Answer 1

Viridans Streptococci

Question 2

What is the most common cause of prosthetic valve endocarditis?

Answer 2

Staphylococcus epidermiditis

Question 3

Most common cause of acute endocarditis especially in an IV drug abuser

Answer 3

Staphylococcus aureus

Question 4

Most common cause of Ehler-Danlos Syndrome

Answer 4

Defect in Collagen III

Question 5

Most common genetic cause of mental retardation

Answer 5

Down syndrome

Question 6

2nd most common genetic cause of mental retardation

Answer 6

Fragile-X syndrome

Question 7

Most common cause of glomerulonephritis worldwide

Answer 7

IgA Nephropathy

Question 8

Most common cause of hypothyroidism

Answer 8

Hashimoto’s thyroiditis

Question 9

Most common cause of death in scleroderma

Answer 9

Renal failure

Question 10

Most common cause of death in scleroderma

Answer 10

Renal failure

Question 11

Most common cause of Agranulocytosis

Answer 11

Drug toxicity

• PTU
• Chloramphenicol
• Chlorpromazine

Question 12

Most common cause episodic hemolysis in G6PD

Answer 12

Infection

Question 13

Most common cause of acute mastitis

Answer 13

Staphylococcus aureus infection

Question 14

Most common cause of bloody discharge in women younger than 50 years

Answer 14

Intraductal papilloma

Question 15

Most common cause of hydronephrosis in infants and children

Answer 15

Ureteropelvic Junction Obstruction

Question 16

Most common cause of bladder adenocarcinoma

Answer 16

Patent urachus

Question 17

Most common cause of bladder adenocarcinoma

Answer 17

Patent urachus

Question 18

What are the most common bacteria that cause acute bacterial cystitis

Answer 18

In descending order:
E. Coli
Proteus
Enterobacter
Klebsiella

Question 19

Most common cause of squamous cell carcinoma of the urinary bladder

Answer 19

Schistosoma haematobium

Question 20

Most common cause of death in cervical cancer

Answer 20

Uremia

Question 21

Most common cause of dysfunctional bleeding in women

Answer 21

Anovulation

Question 22

Most common cause of pyogenic osteomyelitis

Answer 22

Staphylococcus aureus

Question 23

Most common cause of intraparenchymal hemorrhage in the brain

Answer 23

Hypertension

Question 24

2nd most common cause of intraparenchymal hemorrhage in the brain

Answer 24

Cerebral amyloid angiopathy

Question 25

Most common cause if clinically significant subarachnoid hemorrhage

Answer 25

Intracranial aneurysm

Question 26

Most common cause of dementia

Answer 26

Alzheimer disease

Question 27

Most common cause of SIADH

Answer 27

Small Cell Ca of the Lungs

Question 28

Most common cause of hypopituitarism in children

Answer 28

Craniopharyngoma

Question 29

Most common cause of secondary hyperparathyroidism

Answer 29

Renal Failure

Question 30

Most common cause if death in DM

Answer 30

Myocardial Infarction

Question 31

Most common enzyme deficiency in CAH

Answer 31

21-hydroxylase Deficiency

Question 32

Most common cause of respiratory infection in cystic fibrosis

Answer 32

Pseudomonas aeruginosa

Question 33

Most common bacterial enteric pathogen associated with ingestion of improperly cooked chicken

Answer 33

Campylobacter enterocolitis

Question 34

Most common cause of Pseudomembranous colitis

Answer 34

Clindamycin