Xem 1-20 trên 48 kết quả Heart disorders
  • Acne is a disorder of the body’s pilosebaceous units. Each unit consists of a sebaceous gland and a canal or follicle, which is lined with cells called keratinocytes and which contains a fine hair. Most numerous in the skin of the face, upper back, and chest, sebaceous glands manufacture an oily substance called sebum, which is released onto the skin’s surface through the follicle’s opening, or pore. All the constituents of the narrow follicle—the hair, sebum, and keratinocytes—may form a plug that prevents the sebum from reaching the surface of the skin through the pore.

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  • Endophthalmitis This occurs from bacterial, viral, fungal, or parasitic infection of the internal structures of the eye. It is usually acquired by hematogenous seeding from a remote site. Chronically ill, diabetic, or immunosuppressed patients, especially those with a history of indwelling IV catheters or positive blood cultures, are at greatest risk for endogenous endophthalmitis. Although most patients have ocular pain and injection, visual loss is sometimes the only symptom.

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  • Physiology of Circadian Rhythmicity The sleep-wake cycle is the most evident of the many 24-h rhythms in humans. Prominent daily variations also occur in endocrine, thermoregulatory, cardiac, pulmonary, renal, gastrointestinal, and neurobehavioral functions. At the molecular level, endogenous circadian rhythmicity is driven by self-sustaining transcriptional/translational feedback loops (Fig. 28-2). In evaluating a daily variation in humans, it is important to distinguish between those rhythmic components passively evoked by periodic environmental or behavioral changes (e.g.

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  • The homozygous state for the α-thalassemia-1 cis deletion (hydrops fetalis) causes total absence of α-globin synthesis. No physiologically useful hemoglobin is produced beyond the embryonic stage. Excess γ-globin forms tetramers called Hb Barts (γ4), which has a very high oxygen affinity. It delivers almost no O 2 to fetal tissues, causing tissue asphyxia, edema (hydrops fetalis), congestive heart failure, and death in utero. α-Thalassemia-2 trait is common (15–20%) among people of African descent. The cis α-thalassemia-1 deletion is almost never seen, however.

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  • Human genetics is the medical field with the most rapid and, one can say, overwhelming progress. The medical practitioner constantly needs to be up-to-date on the newest developments in his field. The diversity and rapid dynamics of advancements in genetics can sometimes overcome the assimilation possibilities of one person; thus, overspecialization for narrowing and deepening the research focus is needed. Consequently, expert opinion is much valued. This book aims to provide exactly such opinions regarding several genetic diseases.

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  • Deletions involving the long arm of chromosome 22 (22q11) are the most common microdeletions identified to date, present in ~1/3000 newborns. VCF syndrome, the most commonly associated syndrome, consists of learning disabilities or mild mental retardation, palatal defects, a hypoplastic aloe nasi and long nose, and congenital heart defects (conotruncal defect).

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  • Tham khảo sách 'genetic disorders', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Part 2 book presents the following contents: Heart failure, heart muscle disease, heart rhythm disorders, peripheral vascular disease, stroke, women and heart disease, heart disease in the young, heart disease in the elderly, cardiovascular drugs, coronary angioplasty and interventional cardiology,...

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  • (BQ) Part 2 book "Braunwald's heart disease - A textbook of cardiovascular medicine" presents the following contents: Atherosclerotic cardiovascular disease; diseases of the heart, pericardium and pulmonary vasculature bed; cardiovascular disease in special populations, cardiovascular disease and disorders of other organs,...

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  • (BQ) Part 2 book "Braunwald's heart disease - Review and assessment" presents the following contents: Preventive cardiology; atherosclerotic cardiovascular disease; diseases of the heart, pericardium, and pulmonary vascular bed; cardiovascular disease in special populations; cardiovascular disease and disorders of other organs.

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  • Of the four heart valves, the mitral valve is the only valve that has a distinguishable annulus. However, the presence of a fibrous annular structure is variable and discontinuous. The firmest site of support for the mitral valve is the region of fibrous continuity between the aortic and mitral valves, the extent of which is delineated by the right and left fibrous trigones (Fig. 2). Nevertheless, for surgical purposes, the annulus is considered the area of attachment of the valve leaflets to the atrial muscle. The annulus is a functional component of the mitral valve.

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  • Ischemic heart disease continues to be the leading cause of morbidity and mortality in both developed and developing countries, and remains one of the most important public health problems. The continuous rise in the prevalence of disorders such as obesity, diabetes, dyslipidemia and hypertension is driving the ever-increasing number of incidences of ischemic heart disease.

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  • Not Otherwise Specified [NOS]). We also review functional brain imaging studies of patients with various forms of conversion disorder (e.g. psychogenic motor or sensory changes, psychogenic blindness, pseudoseizures) as well as depersonalization disorder. As hypnotizability traits have been postulated to be associated with a higher tendency for developing dissociative symptoms, we briefly refer to functional imaging studies of hypnosis.

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  • Margo Maine, PhD, FAED, cofounder of the Maine & Weinstein Specialty Group, is a clinical psychologist who has specialized in eating disorders and related issues for 30 years.

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  • The history of sleep medicine and sleep research can be summarized as a history of remarkable progress and, at the same time, a history of remarkable ignorance. Since the publication of the second edition in 1999 enormous progress has been made in all aspects of sleep science and sleep medicine. I am pleased to see these rapid advances in sleep medicine and growing awareness about the importance of sleep and its dysfunction amongst the public and the profession.

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  • In ancient Greece, people would journey to an oracle, or fortune teller, to discover what the future held. The oracle would kill an animal, perhaps a goat or a sheep, to examine the creature’s liver. A dark red liver that was smooth was a good sign. A pale liver that was bumpy foretold bad times ahead. The liver has long been linked to human courage and strength. The earliest doctors thought that the liver was one of the three main organs of the body. The others were the heart and the brain. Around a.d. 200, the famous Roman doctor Galen declared the liver to be the most important human...

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  • Whatever value this publication may have, lies in the fact that it offers a typical case--a small cross section of the army that freed the slave and saved the Union. The Editor of the Commission's publications has asked me to state briefly something about myself. I am one of the multitude of "hyphenated" Americans, born across the water but reared under the flag. I am a Cambro-American, proud of both designations, and with abundant heart, loyalty, and perhaps too much head pride in both.

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  • I am way past grammar school, believe me, but the words “Go look it up” still strike terror in my heart. Not because I do not like to look up new terms—far from it. The problem is that I cannot look up just one! I get side- tracked right away by intriguing entries that I just might want to use someday. In the interest of expediency, it is much easier to have someone tell me the meaning. Medicine has its own unique breed of terms, founded from Greek, Latin, and who knows where else. The cur- rent Stedman’s Medical Dictionary is a two-volume set… a place where I could...

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  • Childhood obesity is one of the nation's most pressing public health issues. If current trends continue, best estimates suggest up to half of boys and almost a third of girls will be obese by 2050. Obese children are highly likely to become obese adults and the potential rise in cases of heart disease, type 2 diabetes and diet-related cancers would create a massive cost to the NHS, as well as huge suffering for those involved. Further action simply must be taken.

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  • Crohn’s disease (CD) and ulcerative colitis are chronic inflammatory intestinal disorders affecting 1.7 million people in North America. Recent studies have shown an increasing incidence of CD in children, and an overall prevalence of 10% to 25% of all patients with inflammatory bowel disease (IBD). 2,3 CD is characterized by patchy transmural inflammation involving any segment of the gastrointestinal tract from the mouth to the anus.

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