Glacoma
Presentation - 31 pages - Medical studies
Glaucoma is an alteration where the pressure of the liquid that fills the ocular globe abnormally increases, beyond the eye can tolerate. When this pressure, called intra-ocular tension, is bigger than the normal one, the risk of damages to the eyes increases. Glaucoma is caused by the...
Diabetes
Presentation - 30 pages - Medical studies
Illness provoked by the deficiency of production and/or action of insulin, that drives to acute symptoms and chronic complications. The disease involves the metabolism of glucose, fats and proteins and has serious consequences in either if it appears quickly as when it is installed slowly. In...
Uterine Myoma
Presentation - 33 pages - Medical studies
When numerous large tumors (especially intraligamentary mommas) are found, total abdominal hysterectomy is indicated. If the ovaries are diseased or if their blood supply has been destroyed, oophorectomy is necessary; otherwise, the ovaries should be preserved. Ovaries generally are preserved in...
Coma
Presentation - 63 pages - Medical studies
Consciousness, the awareness of self and environment, requires both arousal and mental content; the anatomic substrate includes both reticular activating system and cerebral cortex. Coma is a state of unconsciousness that differs from syncope in being sustained and from sleep in being less easily...
Effects of Gibberellins on Flowering in Grasses
Essay - 3 pages - Biology
For years, man has been trying to find a single chemical that triggers flowering in plants. Although this single chemical has not been found, several of the Gibberellins show promising results as an active florigen - such as GA5 and GA6 and possibly GA1 and GA4. Results have shown that these...
The Invasion of Bacillus
Essay - 2 pages - Biology
Beep… beep… click… click … this just in: A pandemic breakout of unheard of proportions. Is it anthrax? Or clostridia? It could be, but authorities believe the culprit is Bacillus cereus (49133). B. cereus is a cousin strain to both Bacillus anthracis (anthrax) and Clostridia...
Management and Prognosis of Heart Failure
Presentation - 121 pages - Medical studies
The cardinal manifestations of heart failure are (1) dyspnea and fatigue, which may limit exercise tolerance, and (2) fluid retention, which may lead to pulmonary and peripheral edema. Both abnormalities can impair the functional capacity and quality of life of affected individuals. In addition,...
Glucocorticosteroids in Relation to Inflammatory Disease
Presentation - 42 pages - Medical studies
For more than 50 years, glucocorticosteroids have been important agents in treating diseases characterized by inflammation and exaggerated immune responses. The pioneering work of Hench and colleagues in rheumatoid arthritis showed the possible potency of these agents in such pathologic states....
Applications of Statistics in the Medical Area
Presentation - 49 pages - Medical studies
The sound practice of medicine requires the ability to use scientific evidence that is based on data and is published in the peer-reviewed medical literature. In this literature, investigators publish their findings using descriptive statistics to summarize data and inferential statistics to test...
Applications and Limitations of Diagnostic Imaging
Presentation - 60 pages - Medical studies
The traditional evaluation of the patient includes the history and physical examination and a well-planned set of diagnostic tests, often including imaging. Dramatic advances in imaging not only supplement the physical examination, but also now may begin to substitute for part of it. Medical...
Social and Economic Issues in Medicine
Presentation - 38 pages - Medical studies
Medicine is practiced in a social, economic, and political context. It takes more than excellent medical care to improve the health of patients because many of the determinants of the health of individuals and populations lie outside traditional clinical activity. By contrast, 40% of premature...
Physical Activity
Presentation - 43 pages - Medical studies
Regular physical activity is an important component of a healthy lifestyle. In the 1980s and 1990s, a large body of epidemiologic and clinical evidence linked regular physical activity with a variety of health benefits. Although the strength of the data supporting these associations varies from...
Principles of Drug Therapy
Presentation - 41 pages - Medical studies
It is generally appreciated that under different conditions a drug may produce diverse effects, ranging from none to a desirable effect or, in other cases, an undesirable, toxic effect. Physicians must learn how to individualize the drug dosage under different conditions to ensure effective and...
Neuropsychiatric Aspects of Aging - published : 31/07/2007
Presentation - 37 pages - Medical studies
The process of aging produces important physiologic changes in the central nervous system, including neuroanatomic, neurotransmitter, and neurophysiologic changes. These processes result in age-related symptoms and manifestations for many older persons. These physiologic changes develop at...
Chronic Poisoning
Presentation - 73 pages - Medical studies
The chemical environment was recognized as a threat to health early in history. Well-documented outbreaks of occupational mercury and lead "poisonings" had been recorded and preventive measures implemented by 200 BC. In the Middle Ages, arsenic poisoning was used as a political weapon. In...
Drug Allergy
Presentation - 43 pages - Medical studies
The designation drug allergy should be reserved for adverse drug reactions caused by immunologic mechanisms. Although drug allergies are responsible for only a few adverse drug effects, the possibility of such reactions is a daily concern of most physicians. Drug allergy has a great variety...
Common Clinical Sequelae of Aging
Presentation - 98 pages - Medical studies
Increased longevity throughout the world is influencing medical care dramatically as more older individuals develop or survive with various medical conditions. Although some elderly present typically with single-system disease, they often have presentations and responses to treatments that are...
The Evaluation and Follow-Up of a Heart Failure Patient
Presentation - 28 pages - Medical studies
An extensive battery of laboratory tests is not required for most patients with heart failure. Routine testing should include a complete blood cell count (to detect anemia and systemic diseases with hematologic manifestations), measurement of renal function and electrolytes including magnesium...
Evaluation of a Patient with Possible Heart Failure
Presentation - 51 pages - Medical studies
The common symptoms of heart failure are well known but are frequently absent and variably specific for this condition. The symptoms generally reflect, but may be dissociated from, the hemodynamic derangements of elevated left-sided and right-sided pressures and impaired cardiac output or cardiac...
Clinical Presentation of Heart Failure
Presentation - 30 pages - Medical studies
Acute heart failure usually presents as shortness of breath, culminating, sometimes in a matter of minutes, with pulmonary edema. A more subacute presentation is of progressive dyspnea associated with systemic fluid retention over days to a few weeks. The precipitous form usually suggests...
Heart Failure Syndrome
Presentation - 36 pages - Medical studies
Chronic heart failure is a multifaceted syndrome with diverse presentations. The initial manifestations of hemodynamic dysfunction are a reduction in stroke volume and a rise in ventricular filling pressures, perhaps in the basal state but consistently under conditions of increased systemic...
Heart Failure: Pathophysiology and Diagnosis
Presentation - 42 pages - Medical studies
Heart failure is a heterogeneous syndrome in which an abnormality of cardiac function is responsible for the inability of the heart to pump blood at an output sufficient to meet the requirements of metabolizing tissues or to do so only at abnormally elevated diastolic pressures or volumes. Heart...
Principles of Electrophysiology
Presentation - 57 pages - Medical studies
The function of the human heart requires rhythmic beatings occurring on the average 70 times a minute, 24 hours a day, for 80 or more years. The close to 3 billion contractions of the cardiac musculature that must occur without fail are coordinated by an intricate network of specialized...
Catheterization and Angiography
Presentation - 58 pages - Medical studies
A significant reduction in coronary flow reserve is present when the ratio of flow at rest to flow after vasodilation is less than 2 : 1. Measurement of the pressure gradient across a stenosis using a small wire transducer also can assess functional severity. Fractional flow reserve is the ratio...
Cardiovascular Magnetic Resonace Imaging
Presentation - 32 pages - Medical studies
More than any other imaging technique, cardiovascular magnetic resonance (CMR) offers the potential for dramatically changing current imaging strategies for the evaluation of patients with known or suspected cardiovascular disease. The combined attributes of superior image quality and flexibility...
The basic principle of a rocket
Worksheets - 4 pages - Physics
At first sight, a rocket seems to be about fire, noise and smoke. The basic principle of rocket is the famous Newtonian principle which says that "To every action, there is an equal and opposite action". A rocket throws mass in one direction and benefit of an equal reaction in the opposite...
Gene Therapy
Presentation - 85 pages - Medical studies
Gene therapy is an experimental form of treatment whereby sequences of nucleic acids (i.e., genes) are delivered to cells to change their biologic function. The concept initially arose as replacement therapy for monogenic inherited disorders. For these disorders, the aim is to replace a defective...
Drug Abuse Of Cocaine and Other Psychostimulants
Presentation - 29 pages - Medical studies
Cocaine, an alkaloid extracted from coca leaves, and other psychostimulants (e.g., amphetamine, methamphetamine) rapidly increase the concentration of several neurotransmitters in synaptic junctions and stimulate the sympathetic and central nervous systems. Topical cocaine is used in...
Drug Abuse of Heroin and Other Opioids
Presentation - 42 pages - Medical studies
Opioids, including naturally occurring alkaloids (opiates derived from the poppy plant Papaver somniferum), semisynthetic compounds (chemically altered alkaloids), and synthetic agents, are potent analgesics and produce an intense euphoria associated with nausea; drowsiness; miosis; and a...
Electrocardiography
Presentation - 57 pages - Medical studies
The electrocardiogram (ECG) is a recording of the electrical potentials produced by cardiac tissue. Formation of electrical impulses occurs within the conduction system of the heart. When excited, or depolarized, atrial and ventricular myocardial muscle fibers contract. The electrical currents...
