June 2009 « Page 3 of 4

Why are aminoglycosides not absorbed orally?

Aminoglycosides are highly ionised molecules and hence they are not absorbed orally.

Advantages of doxycycline over other tetracyclines

High potency Completely absorbed from the intestine with no interference by food Long plasma half life (T 1/2) of 18 to 24 hours Least effect on the normal

Pathology

Karyotyping

Karyotyping is a method for studying the chromosomes of an organizm. Karyotype is a standardised arrangement of metaphasic chromosomes that have been photographed and arranged in the order

Pathology

Hyaline change

Hyaline change is a homogenous glassy pink appearance in the histological sections stained with hematoxylin and eosin. It can be due to intracellular accumulation of certain substances as

Pathology

Anticoagulants and their uses

The commonly used anticoagulants are: heparin, citrate, oxalate, EDTA. Citrate is used for the storage of blood. Heparin is for taking blood samples for ABG estimation. Oxalate and

Pathology

Types of infarcts

Infarcts can be classified into red (hemorarragic) white (anemic) infarcts as well as septic and bland infarcts. Red infarcts can occur in lungs while infarcts occur in the

Pathology

Fatty change

Fatty change is the accumulation of lipid droplets within the parenchymal cells. It usually occurs in the liver as the liver has great involvement in fat metabolism. Other

Microbiology

Difference between Ancylostoma duodenale and Necator americanus

Ancylostoma duodenale Necator americanus First identified in Italy First identified in Texas, USA Old world hookworm New world hookworm Larger (male 8-11mm) Smaller (male 7-9mm) Anterior end bent

Dermatology

Dermatosis

Dermatosis refers to ‘skin disease’

Month: June 2009