Articles Archive for May 2010
Anatomy, ENT »
Killian’s dehiscence is a potential triangular gap between the oblique fibers of thyropharyngeus and the transverse fibers of cricopharyngeus (Thyropharyngeus and cricopharyngeus are 2 parts of the inferior constrictor of pharynx)
It is named after German ENT surgeon – Gustav Killian
It is through this gap that the herniation of pharyngeal mucosa occurs in case of pharyngeal pouch (Zenker’s diverticulum)
It is also called ‘gateway of tears‘ as it is a common site for perforation during oesophagoscopy
Synonyms:
Laimer triangle
Laimer-Haeckermann area
Laimer-Killian triangle
Anatomy »
The esophagus has 4 areas where the lumen is narrow compared to the rest of the oesphagus. They are:
Beginning of oesophagus (pharyngoesophageal junction) – 6 inches from incisor teeth
level where arch of aorta crosses oesophagus – 9 inches from incisor teeth
At the level where the left main bronchus crosses oesophagus – 11 inches from incisor teeth
At the end where it pierces diaphragm – 15 inches from incisor teeth
The distance from incisor teeth should be taken into consideration when passing endoscopes.
Obstetrics »
Artificial rupture of membranes (ARM) is the process in which the foetal amniotic sac is ruptured to facilitate labour
It is usually done once the active stage of labour begins
The membranes are ruptured using Kocher’s forceps
The liquor should be examined for meconium staining
Meconium staining of liquor indicates foetal distress
Once ARM is done, foetal heart rate should be checked
Transient changes may occur due to pressure on the cord by the foetal parts that change position once the liquor is drained
Prolonged changes in foetal heart rate indicates foetal distress
When associated with bleeding, it …
Acronyms, Obstetrics »
ARM stands for
Artificial Rupture of Membranes (amniotomy)
Preventive medicine »
The projected population of India in the year 2050 – 1.53 billion
It is expected that India will overtake China to become the most populous nation by then
Acronyms »
UNFPA stands for:
United Nations Population Fund (previously United Nations Fund for Population Activities)
Preventive medicine »
A nation’s population passes through 5 phases during it’s development. They are:
High stationary
Birth rate and death rates are high and cancel each other
Population size remains stationary
India was in this phase till 1920
Early expanding
The death rate starts declining
Birth rate remains high
Birth rates may even increase due to improved health conditions and decreased period of breast feeding\
Many countries in South Asia and Africa are in this stage
Late expanding
Death rate continues to fall
Birth rate also starts falling
India is currently in this stage
Low stationary
Both birth rate and death rate are low and almost …
