Tuesday, January 4, 2011

ABC of Resuscitation (ABC series)

111 pages
Publisher: BMJ Books; 5 edition (January 7, 2004)
Language: English
ISBN-10: 0727916696
ISBN-13: 978-0727916693

Product Description
This authoritative guide has concise and practical information on all aspects of resuscitation. New guidelines are just one of the changes to the 5th edition of this book as many of the chapters have been completely rewritten,with new material on automated defibrillators, advanced life support including paediatric life support, new drugs plus many new illustrations. . The text has worldwide relevance with particular emphasis on Europe, Australasia, South Africa, South America, Malaysia and the Middle East.

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Le Fort Classification of facial fractures

In 1901 ;René Le Fort (1869-1951),French surgeon, reported his work on cadaver skulls that were subjected to blunt forces of various magnitudes and directions. He concluded that predictable patterns of fractures follow certain types of injuries. Three predominant types were described.

Le Fort I fractures (horizontal) may result from a force of injury directed low on the maxillary alveolar rim in a downward direction. The fracture extends from the nasal septum to the lateral pyriform rims, travels horizontally above the teeth apices, crosses below the zygomaticomaxillary junction, and traverses the pterygomaxillary junction to interrupt the pterygoid plates.

Le Fort II fractures (pyramidal) may result from a blow to the lower or mid maxilla. Such a fracture has a pyramidal shape and extends from the nasal bridge at or below the nasofrontal suture through the frontal processes of the maxilla, inferolaterally through the lacrimal bones and inferior orbital floor and rim through or near the inferior orbital foramen, and inferiorly through the anterior wall of the maxillary sinus; it then travels under the zygoma, across the pterygomaxillary fissure, and through the pterygoid plates.

Le Fort III fractures (transverse), also termed craniofacial dysjunctions, may follow impact to the nasal bridge or upper maxilla. These fractures start at the nasofrontal and frontomaxillary sutures and extend posteriorly along the medial wall of the orbit through the nasolacrimal groove and ethmoid bones. The thicker sphenoid bone posteriorly usually prevents continuation of the fracture into the optic canal. Instead, the fracture continues along the floor of the orbit along the inferior orbital fissure and continues superolaterally through the lateral orbital wall, through the zygomaticofrontal junction and the zygomatic arch. Intranasally, a branch of the fracture extends through the base of the perpendicular plate of the ethmoid, through the vomer, and through the interface of the pterygoid plates to the base of the sphenoid.

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USMLE Pass Program Video Lectures (2010) - Pediatrics

About the PASS Program:

The PASS Program was created in 1988 and officially opened for business in the year 2000. This program is different from any other program in this country. It teaches integrated thinking so that a medical student can answer any question asked at any level. It does not, and should not, matter whether a student is taking the USMLE 1, USMLE 2, or USMLE3. The information that is covered in this program is ...........

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Synthesis & Transport of Thyroid Hormones

The thyroid secretes 2 iodine-containing hormones: thyroxine (T4 ) and triiodothyronine (T3). The iodine necessary for the synthesis of these molecules comes from food or iodide supplements. Iodide ion is actively taken up by and highly concentrated in the thyroid gland, where it is converted to elemental iodine by thyroidal peroxidase ( See the Figure ).
The protein thyroglobulin serves as a scaffold for thyroid hormone synthesis. Tyrosine residues in thyroglobulin are iodinated to form monoiodotyrosine (MIT) or diiodotyrosine (DIT) in a process known as iodineorganification........

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This figure also show Sites of action of some antithyroid drugs. I–, iodide ion; I°, elemental iodine. Not shown: radioactive iodine (131I), which destroys the gland through radiation.

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