30 May 2009

Community Clinic Presentations



Community Clinic Presentations
from Oklahoma State University

Determine Need for Rural Doctor

EBM Handout.pdf

Videoconferencing Presentation

2008 Economics of Health Care TP

Monograph Series 2005.pdf

Non-Physician Clinicians in Workforce TP

Standards of Medical Care in Diabetes - 2008

Overview of RH in Turning Point

Jackson RURAL EMERGENCY MEDICINE

Emergency Medicine Video Lectures and Slides



Emergency Medicine Video Lectures
from Oklahoma State University

Emergency Medicine Video Lectures



Emergency Medicine Video Lectures
from Oklahoma State University

29 May 2009

Heart Rhythm Abnormalities video(Part 2)



Heart Rhythm Abnormalities video(Part 2)

Millions of people have irregular heart rhythms, also called arrhythmias. Their hearts either beat too fast or too slow. These problems can be benign or they can also signal a life-threatening condition--sudden cardiac death-which is the number-one cause of death in the U.S. This program covers different kinds of heart rhythm problems and treatments.

Part Two:
Medical treatments for arrhythmias
Cardiac ablation-how it works
Different types of ablation
PET/CT cardiac imaging
Many are unaware of arrhythmias

Guest:
Dr. Stephen Shorofsky, a cardiologist and director of cardiac electrophysiology at the University of Maryland Medical Center. Dr. Shorofsky is also a professor of medicine at the University of Maryland School of Medicine.

Read more...

Heart Rhythm Abnormalities video(Part 1)



Heart Rhythm Abnormalities video(Part 1)

Millions of people have irregular heart rhythms, also called arrhythmias. Their hearts either beat too fast or too slow. These problems can be benign or they can also signal a life-threatening condition--sudden cardiac death-which is the number-one cause of death in the U.S. This program covers different kinds of heart rhythm problems and treatments.

Part One:
Irregular heart rhythms
Causes of arrhythmias
Symptoms of arrhythmia
Testing for arrhythmia - ECG/EKG
Sudden cardiac death
Implanted defibrillators
Pacemakers

Guest:
Dr. Stephen Shorofsky, a cardiologist and director of cardiac electrophysiology at the University of Maryland Medical Center. Dr. Shorofsky is also a professor of medicine at the University of Maryland School of Medicine.

Read more...

Heart Failure Advances video(Part 2)



Heart Failure Advances video(Part 2)

About 5 million Americans are living with heart failure, a chronic condition that is the leading cause of hospitalization for people over age 65. There has been a lot of progress in understanding and treating heart failure in recent years, and the latest advances are discussed in this interview.

Part Two:
Range of heart failure severity
Fluid retention/weight monitoring
Beta Blocker medications
Ace Inhibitor medicines
Diuretics
Heart pumps

Guest:
Dr. Mandeep Mehra, the head of cardiology at the University of Maryland Medical Center. Dr. Mehra is also a professor of medicine and head of the division of cardiology at the University of Maryland School of Medicine

Read more...

Heart Failure Advances video(Part 1)



Heart Failure Advances video(Part 1)

About 5 million Americans are living with heart failure, a chronic condition that is the leading cause of hospitalization for people over age 65. There has been a lot of progress in understanding and treating heart failure in recent years, and the latest advances are discussed in this interview.

Part One:
Definition of heart failure
Symptoms
Diagnosis
Risk factors

Guest:
Dr. Mandeep Mehra, the head of cardiology at the University of Maryland Medical Center. Dr. Mehra is also a professor of medicine and head of the division of cardiology at the University of Maryland School of Medicine

Read more...

Parkinson's Disease Guidelines video(Part 1)



Parkinson's Disease Guidelines video(Part 1)

Experts in Parkinson's disease have revised the guidelines for diagnosing and treating the disease in order to help people receive the best care. In this program, the Parkinson's disease specialist who was lead author of the guidelines explains what changes were made and why, along with the latest information about Parkinson's disease.

Part One:
Parkinson's symptoms
Diagnosing Parkinson's disease
Progression of Parkinson's disease
Medications - Levodopa
Drugs for motor fluctuations

Guest:
Dr. William Weiner, chief of neurology at the University of Maryland Medical Center where he directs the Parkinson's Disease and Movement Disorders Center. Dr. Weiner is also professor and chairman of Neurology at the University of Maryland School of Medicine.

Read more...

Parkinson's Disease Guidelines video(Part 2)



Parkinson's Disease Guidelines video(Part 2)

Experts in Parkinson's disease have revised the guidelines for diagnosing and treating the disease in order to help people receive the best care. In this program, the Parkinson's disease specialist who was lead author of the guidelines explains what changes were made and why, along with the latest information about Parkinson's disease.

Part Two:
Deep brain stimulation
Complementary therapies
Benefits of exercise
Physical / speech therapy
Emotional effects of Parkinson's disease
Depression / anxiety
Mental / cognitive changes
Clinical trials
Future research - stem cells

Guest:
Dr. William Weiner, chief of neurology at the University of Maryland Medical Center where he directs the Parkinson's Disease and Movement Disorders Center. Dr. Weiner is also professor and chairman of Neurology at the University of Maryland School of Medicine.

Read more...

Surgery for Lung Cancer video (Part 2)



Surgery for Lung Cancer (Part 2)

More than 85 percent of lung cancer cases are smoking-related. In this interview, we hear from a chest surgeon who specializes in treating lung and esophageal cancer about the trends in smoking in the United States. The interview also covers lung cancer, including how it develops and how it is treated.

Part Two:
Diagnosing lung cancer
Types of lung cancer
Lung cancer symptoms
Staging
Lobectomy
Recurrence Rate

Dr. Richard Battafarano, head of thoracic surgery at the University of Maryland Medical Center. Dr. Battafarano is also an associate professor of surgery at the University of Maryland School of Medicine.

Read more...

Surgery for Lung Cancer video (Part 1)



Surgery for Lung Cancer (Part 1)

More than 85 percent of lung cancer cases are smoking-related. In this interview, we hear from a chest surgeon who specializes in treating lung and esophageal cancer about the trends in smoking in the United States. The interview also covers lung cancer, including how it develops and how it is treated.

Part One:
Cancer death rates
Trends in smoking
Lung cancer
Pack years
Second hand smoke

Dr. Richard Battafarano, head of thoracic surgery at the University of Maryland Medical Center. Dr. Battafarano is also an associate professor of surgery at the University of Maryland School of Medicine.

View here

Uterine Fibroid Embolism Video-2



Uterine Fibroid Embolism and Interventional Radiology (Part 2)

Radiologists are known for looking inside the body to diagnose health problems. And now, many of these same doctors now use advanced

imaging equipment, not just to diagnose, but also to treat a wide range of problems. In this program, you'll learn how interventional

radiologists use minimally invasive techniques to help people with many conditions, including uterine fibroids and cancer.

Part Two:
Uterine fibroids - what are they?
Uterine fibroid symptoms
Uterine fibroid embolization
Treating pelvic pain

Guest:
Dr. Howard Richard, an interventional radiologist at the University of Maryland Medical Center. Dr. Richard is also an assistant professor of diagnostic radiology at the University of Maryland School of Medicine

Read more...

Uterine Fibroid Embolism Video-1



Uterine Fibroid Embolism and Interventional Radiology (Part 1)

Radiologists are known for looking inside the body to diagnose health problems. And now, many of these same doctors now use advanced

imaging equipment, not just to diagnose, but also to treat a wide range of problems. In this program, you'll learn how interventional

radiologists use minimally invasive techniques to help people with many conditions, including uterine fibroids and cancer.

Part One:
What is interventional radiology (IR)?
Technological advances to see inside the body
Overview of conditions that can be treated with IR
SIR-Spheres treatment for liver cancer
Radio frequency ablation for tumors

Guest:
Dr. Howard Richard, an interventional radiologist at the University of Maryland Medical Center. Dr. Richard is also an assistant professor of diagnostic radiology at the University of Maryland School of Medicine

Read more...

Neurobiology of Fear, Anxiety and Extinction video



Neurobiology of Fear, Anxiety and Extinction: Implications for Psychotherapy
by:Dr. Michael Davis, Video from MIT

About the Lecture
Few scientists have charted the grim territory of fear and anxiety with the same doggedness and precision as Michael Davis.

Nearly four decades ago, researchers learned that animals, including humans, startle more when fearful. A sudden noise in a dark, creepy alley provokes a greater reaction than in a well-lit room, for instance. That got Davis and his colleagues wondering what neural mechanisms underlie the startle reflex, and how fear plays a part in the response.

In his talk, Davis describes the meticulous experiments he and others have conducted over many years. Starting with the fear potentiated startle test -- where animals are trained to pair a stimulus such as light, or sound, with a shock -- researchers began to track the pathways that mediate the response in the nervous system. Using chemical tracers that could follow electrical activity in the brain, Davis found a group of cells in the central nucleus of the amygdala that are critical for fear conditioning. “It was a nice day in the laboratory,” he says. When he knocked out this part of the amygdala with drugs or a lesion, it selectively decreased fear potentiated startle.

Read more...

Kanas University Video Lecture Library part2



Kanas University Video Lecture Library part2

Liver Transplantation Part A
J. Kinscher, MD


Monitoring Part A | Part B
T. Davis, CRNA, 2000

Monitored Anesthesia Care Part A
H. Mathewson, MD, 2001


Neurosurgical Anesthesia Part A
H. Mathewson, MD, 2001


Pain Management / Regional Blocks 1
Part A | Part B | Part C | Part D | Part E
H. Mathewson, MD, 2000


Positioning Part A | Part B
C. Weber CRNA, 2001


Preoperative Evaluation Part A | Part B | Part C
M. Hutchinson, MD, 2001


Obstretrics I Part A | Part B
G. Shih, MD, 2001


Obstetrics II Part A | Part B
P. Steer, MD, 2000


Otorhinolaryngology Part A | Part B
G Unruh, MD, 2001


Pediatric Anesthesia I Part A
R. Torline, MD, 2001


Pediatric Anesthesia II Part A | Part B
T Davis, CRNA, 2000


Pulmonary Disease Part A | Part B
H. Mathewson, MD, 2002


Regional Anesthesia / Spinal Part A | Part B
H. Mathewson, MD, 2001


Respiratory Function & Anesthesia Part A
H. Mathewson, MD, 2001


Trauma Part A | Part B
H. Mathewson, MD, 2001


Thoracic Anesthesia Part A | Part B
H. Mathewson, MD, 2001


Vascular Surgery Part A | Part B
H. Mathewson, MD

All videos are copyright 2006 by the University of Kansas and may not be duplicated, displayed, broadcast or otherwise used without permission.

Kanas University Video Lecture Library part1



Kanas University Video Lecture Library

Acid-Base & Electrolyte Balance Part A
H. Mathewson, MD, 2001

Acid-Base Balance Part A | Part B
T. Davis, CRNA, 2000

Acute/Chronic Pain Part A (acute) | Part B (chronic)
Principles of Acute Pain Mgmt
Special Considerations - Chronic Pain
Twillman, PhD

Burns and Anesthesia Part A | Part B
C. Elliott, CRNA, PhD, 2000

Cardiothoracic Surgery & Anesthesia Part A | Part B
Peter Hild, MD

Cardiovascular Disorders Part A | Part B
H. Mathewson, MD, 2002

Cardiovascular Anesthesia I Part A | Part B | Part C
H. Mathewson, MD, 2001

Cardiovascular Anesthesia II Part A | Part B
H. Mathewson, MD, 2001

Cardiovascular Anesthesia - Cardiac Abnormalities/Arhythmias Part A | Part B
H. Mathewson, MD, 2002

Dilemmas & Controversies in Intubation Part A Part B
A. Kovac, MD

Ear, Nose & Throat Anesthesia Part A | Part B
G. Unruh, MD

Electrocardiology Part A | Part B
H. Mathewson, MD, 2000

Fluids and Electrolytes Part A | Part B
T Davis, CRNA, 2000

Genitourinary Part A | Part B
H. Mathewson, MD, 2001

Hemostasis Part A | Part B | Part C
J. Kinscher, MD, 2000

HIV/Infection Control Part 1
S. Shaffer RN, MSN, 2000

HIV Part 2
C. Elliott, CRNA, PhD

Laser Safety in the Operating Room Part A | Part B
G. Unruh, MD

All videos are copyright 2006 by the University of Kansas and may not be duplicated, displayed, broadcast or otherwise used without permission.

PREVENTIVE GERIATRICS



PREVENTIVE GERIATRICS
Dr.I.Selvaraj,I.R.M.S
B.Sc., M.B.B.S.,(M.D Community medicine).,
D.P.H.,D.I.H.,P.G.C.H&FW (NIHFW, New Delhi)
Sr.D.M.O (Selection Grade Officer)
INDIAN RAILWAYS MEDICAL SERVICE

It is the art and science of preventing disease in the geriatric population and promoting their health and efficiency

* Hippocrates noted conditions common in later life
* Aristotle offered theory of ageing based on loss of heat
* The word geriatrics was invented by Ignatz L. Nascher, a vienna born immigrant to the united states
* Geriatric medicine was a product of the British NHS
* Nascher was the father of geriatrics and Majory Warren was its Mother
* The 1st Geriatric service was started in U.K in 1947.
* Geriatric department at GH, Chennai was established in 1978.
* Post Graduate course in Geriatric medicine has been started in 1996 at Madras medical college.
* Prof. V.S. Natarajan was the first Geriatric professor in India
* The study of physical and psychological changes that occur in old age is called “gerontology”.
* Geriatrics is the branch of general medicine concerned with clinical, preventive, medical and social aspects of illness in the elderly.
* The old age is defined as the age of retirement. In our country it is fixed at 60 years and above.

Present scenario in INDIA
* Cataract &Visual impairment- 88%
* Arthritis &locomotion disorder-40%
* CVD &HT – 18%
* Neurological problems- 18%
* Respiratory problems including Chronic bronchitis- 16%
* GIT problems- 9%
* Psychiatric problems- 9%
* Loss of Hearing – 8%

Theory of aging
* Somatic mutation theory
* Autoimmune theory
* Hayflick’s theory of aging

Read more...

28 May 2009

MusculoSkeletal Imaging Teaching Files Part2



Musculoskeletal Case Forty One - Aneurysmal Bone Cyst


Musculoskeletal Case Forty Two - Pulmonary Osteoarthropathy


Musculoskeletal Case Forty Three - Melorheostosis


Musculoskeletal Case Forty Four - Brown Tumors Secondary to Hyperparathyroidism


Musculoskeletal Case Forty Five - Frostbite


Musculoskeletal Case Forty Six - Erosive Osteoarthritis


Musculoskeletal Case Forty Seven - Disuse Osteoporosis


Musculoskeletal Case Forty Eight - Scleroderma


Musculoskeletal Case Forty Nine - Articular Muscle of the Knee


Musculoskeletal Case Fifty - Sacral Stress Fracture


Musculoskeletal Case Fifty One - Condensing Osteitis


Musculoskeletal Case Fifty Two - Bucket Handle Tear of Lateral Meniscus


Musculoskeletal Case Fifty Three - Scleroderma with acroosteolysis


Musculoskeletal Case Fifty Four - Fluid in the Medial Collateral Ligament Bursa


Musculoskeletal Case Fifty Five - Partial Rupture of Tendon on Radial Tuberosity


Musculoskeletal Case Fifty Six - Synovial Osteochondramatosis


Musculoskeletal Case Fifty Seven - Unilateral Locked Facet


Musculoskeletal Case Fifty Eight - Ankylosing Spondylitis


Musculoskeletal Case Fifty Nine - Supracondylar Process of the Humerus


Musculoskeletal Case Sixty - Linear & Non displaced Fracture of Radial Head


Musculoskeletal Case Sixty One - Neurofibroma


Musculoskeletal Case Sixty Two - Lunatriquetral Coalition


Musculoskeletal Case Sixty Three - Dorsal Trans-radial Styloid Perilunate Dislocation


Musculoskeletal Case Sixty Four - Fibroxanthoma


Musculoskeletal Case Sixty Five - Secondary Hyperparathyroidism


Musculoskeletal Case Sixty Six - Transient Lateral Patellar Dislocation


Musculoskeletal Case Sixty Seven - Volar Intercalated Segmental Instability (VISI)


Musculoskeletal Case Sixty Eight - Calcaneal Cyst


Musculoskeletal Case Sixty Nine - Infection of Intervertebral Disc Cages


Musculoskeletal Case Seventy - Pelligrini - Stieda Disease


Musculoskeletal Case Seventy One - Bone Infarct


Musculoskeletal Case Seventy Two - Lymphoma


Musculoskeletal Case Seventy Three - Lisfranc Fracture / Dislocation of Foot


Musculoskeletal Case Seventy Four - Fracture through Solitary Bone Cyst


Musculoskeletal Case Seventy Five - Chondrosarcoma


Musculoskeletal Case Seventy Six - Posterior Dislocation with Impaction Fracture of the Humeral Head


Musculoskeletal Case Seventy Seven - Complete Rupture of the Hamstring Tendons


Musculoskeletal Case Seventy Eight - Aneurysmal Bone Cyst


Musculoskeletal Case Seventy Nine - Bilateral Subcapital Femoral Epiphyses


Musculoskeletal Case Eighty - Meniscal Ossicle


Musculoskeletal Case Eighty One - Lateral Patellar Dislocation


Musculoskeletal Case Eighty Two- Tear of Anterior Cruciate Ligament


Musculoskeletal Case Eighty Three- Soft Tissue Hemangioma


Musculoskeletal Case Eighty Four - Osteoid Osteoma


Musculoskeletal Case Eighty Five - Bucket Handle Tear of Medial Meniscus


MusculoSkeletal Imaging Teaching Files Part1



Musculo Skeletal Imaging Teaching Files

Musculoskeletal Case One - Insufficiency Fractures

Musculoskeletal Case Two - Subacute Hematoma


Musculoskeletal Case Three - Blount's Disease


Musculoskeletal Case Four - Ankylosing Spondylitis


Musculoskeletal Case Five - Quadriceps Tendon Rupture


Musculoskeletal Case Six - Tarsal Coalition


Musculoskeletal Case Seven - Bilateral Glenoid Hypoplasia


Musculoskeletal Case Eight - Disruption of the Anterior Cruciate Mechanism


Musculoskeletal Case Nine - Bucket Handle Tear


Musculoskeletal Case Ten - Insufficiency Stress Fractures


Musculoskeletal Case Eleven - Infectious Tenosynovitis/Palmar Abscess


Musculoskeletal Case Twelve - Discoid Lateral Meniscus With a Tear


Musculoskeletal Case Thirteen - Melorheostosis of Phalanges


Musculoskeletal Case Fourteen - Melorheostosis


Musculoskeletal Case Fifteen - Talocalcaneal Subtalar Coalition


Musculoskeletal Case Sixteen - Uncorrected Developmental Dysplasia of the Left Hip


Musculoskeletal Case Seventeen - Infectious Spondylitis


Musculoskeletal Case Eighteen - Tillaux Fracture


Musculoskeletal Case Nineteen - Sarcoidosis of Hands


Musculoskeletal Case Twenty - Synovial Osteochondromatosis


Musculoskeletal Case Twenty One - Necrotizing Fasciitis


Musculoskeletal Case Twenty Two - Benign Giant Cell Tumor With a Pathological Fracture


Musculoskeletal Case Twenty Tree - SLAP Lesion


Musculoskeletal Case Twenty Four - Dracunculiasis (Guinea Worm Disease)


Musculoskeletal Case Twenty Five - Multiple Hereditary Exostoses


Musculoskeletal Case Twenty Six - Monteggia Fracture-Dislocation (Type 1)


Musculoskeletal Case Twenty Seven - Ruptured Baker’s Cyst


Musculoskeletal Case Twenty Eight - Myositis Ossificans


Musculoskeletal Case Twenty Nine - Flexion-Distraction Fracture at L1 Vertebral Body


Musculoskeletal Case Thirty - Calcium Pyrophosphate Dihydrate (CPPD) Arthropathy


Musculoskeletal Case Thirty One - Neuromuscular Arthropathy Secondary to Poliomyelitis


Musculoskeletal Case Thirty Two - Giant Cell Tumor With Pathologic Fracture


Musculoskeletal Case Thirty Three - Type IV SLAP Lesion of the Glenoid Labrum


Musculoskeletal Case Thirty Four - Melorheostosis


Musculoskeletal Case Thirty Five - Fractured Talar Lateral Process


Musculoskeletal Case Thirty Six - Osteopetrosis


Musculoskeletal Case Thirty Seven - Discitis / Osteomyelitis


Musculoskeletal Case Thirty Eight - Insufficiency Fracture of the Femoral Neck


Musculoskeletal Case Thirty Nine - Osgood Schlatter's Disease


Musculoskeletal Case Forty - Osteochondroma of L3 Spinous Process


Routes of Drug Administration



Routes of Drug Administration
By:Robert L. Copeland, Ph.D.
Department of Pharmacology, Howard University

Drug Absorption

* Absorption is the process by which a drug enters the bloodstream without being chemically altered or
* The movement of a drug from its site of application into the blood or lymphatic system
* Factors which influence the rate of absorption
* The rate at which a drug reaches it site of action depends on:
* Mechanisms of solute transport across membranes
Ion Trapping:
Kidney:
Lipid-Water Partition Coefficient

Read more...

SEDATIVE/HYPNOTICS ANXIOLYTICS



SEDATIVE/HYPNOTICS ANXIOLYTICS
By:Martha I. Dávila-García, Ph.D.
Department of Pharmacology, Howard University

Optimal Performance Nervous Breakdown
Performance Anxiety GOAL
SEDATIVE/HYPNOTICS ANXIOLYTICS
Manifestations of anxiety:
Pathological Anxiety
Causes of Anxiety
1). Medical:
o Respiratory
o Endocrine
o Cardiovascular
o Metabolic
o Neurologic.

2). Drug-Induced:
o Stimulants
+ Amphetamines, cocaine, TCAs, caffeine.
o Sympathomimetics
+ Ephedrine, epinephrine, pseudoephedrine phenylpropanolamine.
o Anticholinergics\Antihistaminergics
+ Trihexyphenidyl, benztropine, meperidine diphenhydramine, oxybutinin.
o Dopaminergics
+ Amantadine, bromocriptine, L-Dopa, carbid/levodopa.
o Miscellaneous:
+ Baclofen, cycloserine, hallucinogens, indomethacin.

3). Drug Withdrawal:
Anxiolytics
Sedative/Hypnotics
Properties of Sedative/Hypnotics in Sleep
1) The latency of sleep onset is decreased (time to fall asleep).
2) The duration of stage 2 NREM sleep is increased.
3) The duration of REM sleep is decreased.
4) The duration of slow-wave sleep (when somnambulism and nightmares occur) is decreased.
Other Properties of Sedative/Hypnotics
GABAergic SYSTEM
Benzodiazepines

Read more...

ANTIEPILEPTIC DRUGS



ANTIEPILEPTIC DRUGS
By:Martha I. Dávila-García, Ph.D.
Department of Pharmacology, Howard University

Epilepsy

A group of chronic CNS disorders characterized by recurrent seizures.
* Seizures are sudden, transitory, and uncontrolled episodes of brain dysfunction resulting from abnormal discharge of neuronal cells with associated motor, sensory or behavioral changes.

Causes for Acute Seizures
* Trauma
* Encephalitis
* Drugs
* Birth trauma
* Withdrawal from depressants
* Tumor
* High fever
* Hypoglycemia
* Extreme acidosis
* Extreme alkalosis Hyponatremia
* Hypocalcemia
* Idiopathic
Seizures
* The causes for seizures can be multiple, from infection, to neoplasms, to head injury. In a few subgroups it is an inherited disorder.
* Febrile seizures or seizures caused by meningitis are treated by antiepileptic drugs, although they are not considered epilepsy (unless they develop into chronic seizures).
* Seizures may also be caused by acute underlying toxic or metabolic disorders, in which case the therapy should be directed towards the specific abnormality.

Neuronal Substrates of Epilepsy
The Brain
The Synapse
The Ion Channels/Receptors
ions
Cellular and Synaptic Mechanisms of Epileptic Seizures
I. Partial (focal) Seizures
II. Generalized Seizures


Classification of Epileptic Seizures
Scheme of Seizure Spread
Simple (Focal) Partial
Contralateral spread
I. Partial (Focal) Seizures
Scheme of Seizure Spread
Complex Partial Seizures
Complex Secondarily Generalized Partial Seizures

I. Partial (focal) Seizures
II. Generalized Seizures
* Generalized Tonic-Clonic Seizures
* Absence Seizures
* Tonic Seizures
* Atonic Seizures
* Clonic and Myoclonic Seizures.
* Infantile Spasms

II. Generalized Seizures
Neuronal Correlates of Paroxysmal Discharges
B. Absence Seizures (Petite Mal)
Treatment of Seizures
Goals:
* Block repetitive neuronal firing.
* Block synchronization of neuronal discharges.
* Block propagation of seizure.
Strategies:
* Modification of ion conductances.
* Increase inhibitory (GABAergic) transmission.
* Decrease excitatory (glutamatergic) activity.

Actions of Phenytoin on Na+ Channels
* Resting State
* Arrival of Action Potential causes depolarization and channel opens allowing sodium to flow in.
* Refractory State, Inactivation
Sustain channel in this conformation

Read more...

Antiviral Agents



Antiviral Agents
By:Jillian H. Davis
Department of Pharmacology, Howard University

Viruses
* Obligate intracellular parasites
* Consist of a core genome in a protein shell and some are surrounded by a lipoprotein
* lack a cell wall and cell membrane
* do not carry out metabolic processes
* Replication depends on the host cell machinery
* Steps for Viral Replication

Sites of Drug Action
Antiviral Agents
Antiherpes Agents
* Acyclovir- prototype
* Valacyclovir
* Famciclovir
* Penciclovir
* Trifluridine
* Vidarabine
Mechanism of Action Acyclovir
* an acyclic guanosine derivative
* Phosphorylated by viral thymidine kinase
* Di-and tri-phosphorylated by host cellular enzymes
* Inhibits viral DNA synthesis
* Alteration in viral thymidine kinase
* Alteration in viral DNA polymerase
* Cross-resistance with valacyclovir, famciclovir, and ganciclovir

Clinical Uses Acyclovir
* Oral, IV, and Topical formulations
* Cleared by glomerular filtration and tubular secretion
* Uses:
o Herpes Simplex Virus 1 and 2 (HSV)
o Varicella-zoster virus (VZV)
* Side Effects: nausea, diarrhea, headache, tremors, and delirium

Valacyclovir
* L-valyl ester of acyclovir
* Converted to acyclovir when ingested
* M.O.A.: same as acyclovir
* Uses:
o 1) recurrent genital herpes
o 2) herpes zoster infections
* Side Effects: nausea, diarrhea, and headache

Famciclovir
* Prodrug of penciclovir (a guanosine analog)
* M.O.A.: same as acyclovir
* does not cause chain termination
* Uses: HSV-1, HSV-2, VZV, EBV, and hepatitis B
* Side Effects: nausea, diarrhea, and headache

Trifluridine
* Trifluridine- fluorinated pyrimidine
o inhibits viral DNA synthesis same as acyclovir
o incorporates into viral and cellular DNA
o Uses: HSV-1 and HSV-2 (topically)
Vidarabine
* An adenosine analog
* inhibits viral DNA polymerase
* incorporated into viral and cellular DNA
* metabolized to hypoxanthine arabinoside
* Side Effects: GI intolerance and myelosuppression

Anti-Cytomegalovirus Agents
* Gancyclovir
* Valgancyclovir
* Cidofovir
* Foscarnet
* Fomivirsen

Ganciclovir
* An acyclic guanosine analog
* requires triphosphorylation for activation
* monophosphorylation is catalyzed by a phosphotransferase in CMV and by thymidine kinase in HSV cells
* M.O.A.: same as acyclovir
* Uses: CMV*, HSV, VZV,and EBV
* Side Effect: myelosuppression

Read more...

Anticoagulant, Antithrombotic and Anti-Platelet Drugs



Anticoagulant, Antithrombotic and Anti-Platelet Drugs
By:Robert Taylor, MD, Ph.D.
Department of Pharmacology, Howard University

Clinical Thrombosis
Indications For Antithrombotic Therapy
* Venous thromboembolic disease
o Deep venous thrombosis (DVT)
o Pulmonary embolism (PE)
o Primary prophylaxis of DVT or PE
* Arterial thromboembolic disease
o Prosthetic heart valves
o Mitral valve disease, especially with atrial fibrillation
o Congestive cardiomyopathies, especially with atrial fibrillatio
o Atrial fibrillation
o Mural cardiac thrombi
o Transient ischemic attacks
o Stroke in evolution
* Disseminated intravascular coagulation
* Maintenance of patency of vascular grafts, shunts, bypasses

Recombinant Human Activated Protein C
* Drotrecogin alfa (activated)- Xigris
* Indicated for Severe Sepsis in Adults with Acute Organ Dysfunction with High Risk of Death
* Reduction in Death as Primary End Point
* Antithrombotic, Antiinfammatory, Profibrinolytic Properties
* Serious Bleeding is Major Side Effect

Antithrombin III Inhibits the Following Serine Proteases
* Coagulation
* Factor XIIa
* Factor XIa
* Factor IXa
* Factor Xa
* Thrombin
* Fibrinolysis
* Plasmin

Inhibitory activity against all these enzymes is substantially accelerated by heparin

Heparin
Anticoagulant Properties of Heparin
* Inhibits the thrombin-mediated conversion of fibrinogen to fibrin
* Inhibits the aggregation of platelets by thrombin
* Inhibits activation of fibrin stabilizing enzyme
* Inhibits activated factors XII, XI, IX, X and II
* Biologic Sources
* Bioavailability
* Metabolism
* Elimination
* Side Effects
* Overdose
* Contraindications
* Pregnancy- YES

Read more...

27 May 2009

Foot and Ankle Complaints



Foot and Ankle Complaints
By:Allyson Howe, MD
Major USAF MC
Capital Conference 2007


INTRODUCTION
* Anatomy and Function
o Foot
o Ankle
* Common complaints
* Common diagnoses

FOOT AND ANKLE ANATOMY
* 26 bones and 2 sesamoids
* Forefoot
o Metatarsals
o phalanges
* Midfoot
o 5 tarsals
* Rearfoot
o Talus and Calcaneus

FOOT AND ANKLE
* FUNCTIONS
o Absorb impact loading forces
o Adapt to uneven ground
o Allow efficient propulsion
FOOT AND ANKLE COMPLAINTS
HISTORICAL CLUES
* Previous injury?
* New shoes?
* New sport/activity?
* Sudden increase in mileage?
* Long term training without rest?
FOOT AND ANKLE COMMON COMPLAINTS
* Heel pain
* Forefoot pain
* Ankle pain
* Numbness/tingling/burning
* Ankle swelling
* Heel pain
* Forefoot pain
* Ankle pain
* Numbness/tingling/burning
* Ankle swelling

Read more...

Hormone Replacement Therapy



Hormone Replacement Therapy… and other options
By:Marc Childress, MD


Risks vs. Benefits in a post-WHI world
* Cancer Risk
* Osteoporosis
* Dementia
* Vasomotor Symptoms
* Urogenital Symptoms
* Cardiovascular Disease

Breast Cancer
* Mixed Results
* Excess risk approx ½ of anticipated
* Question of prognosis, timeframe of concern

Gratuitous Perspective Slide
* Increased risk of breast CA with 10% weight gain (2 add’l cases per 1000 pt-years)
* Increased risk of breast CA with combined tx (0.8 add’l cases per 1000 pt-years)

Endometrial Cancer
* Known increase in risk with unopposed estrogen
* WHI showed no signif risk of CA with combined tx

Ovarian Cancer
* No overt correlation b/w combined HRT and ovarian CA risk
* There IS a signif risk reduction associated with OCPs

Colorectal Cancer
* Signif Risk Reduction of Colon CA with combined Est/Pro
* While less cases, trend toward worse prognosis (nodal spread)
* No risk reduction observed with estrogen alone

Osteoporosis
* Well established
* Risk reduced at hip, vertebrae, and wrist over placebo
* Similar numbers for estrogen alone vs combined tx.

Dementia
* Presumed correlation with long-term estrogen and cognitive fxn
* WHIMS (memory study)

Vasomotor Symptoms

Read more...

Thyroid Disease Facts



Thyroid Disease Facts
By:Jeffrey Medland
Lt Col, USAF, MC, SFS
Chief, Endocrinology
MGMC, Andrews AFB, MD
Capital Conference-June 2007

Outline
* Thyroid Testing
* Hypothyroidism
o Causes
o Signs/symptoms
o Treatment
* Hyperthyroidism
o Causes
o Signs/symptoms
o Treatment
* Thyroid Nodules/ Cancer
* Thyroid Disease and Pregnancy
o Hypothyroidism
o Hyperthyroidism (Hyperemesis Gravidarum, Graves’)
o Thyroiditis
* Factors affecting Thyroid function, LT4

Thyroid
Colloid
Apical Membrane
Basal Membrane
Thyroid Peroxidase (TPO)
“Iodination Reaction”
“Coupling Reaction”

Thyroid Testing
* TSH
o Best test for screening for thyroid dysfunction!
o Log/linear response w/ FT4
+ A 2-fold change in FT4 produces a 100-fold change in TSH
o Not specific for a particular thyroid disease.
+ Don’t use TSH alone for diagnosis!
o Also useful in
+ Assessing LT4 tx in 1° hypothyroidism
+ Monitoring TSH-suppressive tx in thyroid Ca
* FT4
o Testing methods:
+ Equilibrium dialysis
+ Analog assays
o Abnormal TSH check this next
o Indications:
+ In conjunction w/ TSH for diagnosing hyperthyroidism or hypothyroidism.
+ Monitoring LT4 replacement in central hypothyroidism (TSH not helpful)
+ Assessing response to tx following 131-RAIA (Graves, toxic nodules)
+ Monitoring ATD tx in pregnant females
* FT3
o Abnormal TSH + normal FT4, then check this (T3 Thyrotoxicosis)

Pituitary Hypothyroidism
Subclinical Hyperthyroidism, Autonomous nodules
Thyrotoxicosis, Thyroiditis (stage 1)
Pituitary Hyperthyroidism
Subclinical Hypothyroidism
Primary Hypothyroidism, Thyroiditis (stage 3)
Clinical Status
FT4
Overview of Thyroid Function Tests
* Thyroid Antibodies (TPO, Tg, TSI, TRAb)
* Thyroglobulin (Tg)
* Radioactive Iodine Uptake and Scan (RAIU/Scan)
* Tc99m-Pertechnetate Scan
* Fine Needle Aspiration (FNA)
* Ultrasound
* Calcitonin

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Osteoporosis



Osteoporosis
Capital Conference 2007
By:Marc Childress, MD

Osteoporosis
* Epidemiology
* Risk Factors
* Prevention
* Screening
* Diagnosis
* Treatment
* Osteoporosis in Men
* Management
* Falls
* Acute Complications

Osteoporosis
* Average female bone mineral density peaks at age 35, slow decline thereafter
* Density loss is accelerated post-menopausally

Epidemiology
Risk Factors
Predisposing Medical Conditions
* Estrogen Deficiency
* Inflammatory Bowel Disease
* Type 2 Diabetes Mellitus
* Celiac disease
* Cystic fibrosis
* Hyperthyroidism
* Hyperparathyroidism
* Hypogonadism
* Liver Disease
* Corticosteroid use
* Heparin use
* Cyclosporine use
* Depo-Provera use

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Infertility



Infertility
By:Stephanie R. Fugate D.O.
Dewitt Army Community Hospital
Department of OB/GYN

Objectives
* Define primary and secondary infertility
* Describe the causes of infertility
* Diagnosis and management of infertility

Requirements for Conception
* Production of healthy egg and sperm
* Unblocked tubes that allow sperm to reach the egg
* The sperms ability to penetrate and fertilize the egg
* Implantation of the embryo into the uterus
* Finally a healthy pregnancy

Infertility
* The inability to conceive following unprotected sexual intercourse
o 1 year (age < 35) or 6 months (age >35)
o Affects 15% of reproductive couples
+ 6.1 million couples
o Men and women equally affected
* Reproductive age for women
* With the proper treatment 85% of infertile couples can expect to have a child
* Health problems develop
* SAB
* Primary infertility
* Secondary infertility

Conception rates for fertile couples
Age and Pregnancy
Pregnancy
Age and related miscarriage
Causes for infertility

* Male
o ETOH
o Drugs
o Tobacco
o Health problems
o Radiation/Chemotherapy
o Age
o Enviromental factors
* Female
o Age
o Stress
o Poor diet
o Athletic training
o Over/underweight
o Tobacco
o ETOH
o STD’s
o Health problems

* Anovulation (10-20%)
* Anatomic defects of the female genital tract (30%)
* Abnormal spermatogenesis (40%)
* Unexplained (10%-20%)

Evaluation of the Infertile couple
* History and Physical exam
* Semen analysis
* Thyroid and prolactin evaluation
* Determination of ovulation
o Basal body temperature record
o Serum progesterone
o Ovarian reserve testing
* Hysterosalpingogram

Abnormalities of Spermatogenesis
Male Factor
Semen Analysis (SA)
* Obtained by masturbation
* Provides immediate information
o Quantity
o Quality
o Density of the sperm
* Abstain from coitus 2 to 3 days
* Collect all the ejaculate
* Analyze within 1 hour
* A normal semen analysis excludes male factor 90% of the time
* Morphology
* Motility

Normal Values for SA
Volume
Sperm Concentration
Motility
Viscosity
Morphology
pH
WBC

Causes for male infertility
Abnormal Semen Analysis
* Azospermia
* Oligospermia
* Abnormal volume

Evaluation of Abnormal SA
* Repeat semen analysis in 30 days
* Physical examination
o Testicular size
o Varicocele
* Laboratory tests
o Testosterone level
o FSH (spermatogenesis- Sertoli cells)
o LH (testosterone- Leydig cells)
* Referral to urology

Evaluation of Ovulation
Menstruation
* Ovulation occurs 13-14 times per year

Read more...
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