Abstract：
:Nitrates are frequently found in vegetables and ground water. Nitrate levels in ground water have increased over the past two decades because of the heightened use of nitrogenous fertilizers. Following ingestion, nitrates are converted to nitrites by fecal organisms. Nitrites are absorbed and form methemoglobin, which interferes with the oxygen-carrying capacity of hemoglobin. Infants are particularly susceptible to nitrate poisoning because fetal hemoglobin is more readily oxidized to methemoglobin. In infants, the most common source of nitrate exposure is well water, which is mixed with infant formula. Affected infants may present with asymptomatic cyanosis, which can progress to dyspnea and lethargy or coma. Blood methemoglobin concentrations are elevated. Treatment consists of the administration of oxygen and intravenous and oral methylene blue.
journal_name
Am Fam Physicianjournal_title
American family physicianauthors
Kross BC,Ayebo AD,Fuortes LJsubject
Has Abstractpub_date
1992-07-01 00:00:00pages
183-8issue
1eissn
0002-838Xissn
1532-0650journal_volume
46pub_type
杂志文章,评审abstract：:Problems resulting from cold exposure can be successfully treated when a coordinated emergency medical transport system and appropriate equipment are available, as well as medical personnel knowledgeable in the management of frostbite and hypothermia. Clinical suspicion of these disorders is essential. Profoundly hypo...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:Hoarseness is the term often used by patients to describe changes in their voice quality. The causes of hoarseness are determined after obtaining a detailed medical history of the circumstances preceding the onset of hoarseness and performing a thorough physical examination. The latter may include visualization of the...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1998-06-01 00:00:00
abstract：:Because of the increasing popularity of recreational scuba diving, primary care physicians should be familiar with common diving injuries. One form of barotrauma, middle ear squeeze, is the most common diving injury. Other important diving injuries include inner ear barotrauma and pulmonary barotrauma. Arterial gas em...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1996-04-01 00:00:00
abstract：:All major health organizations recommend breastfeeding as the optimal source of infant nutrition, with exclusive breastfeeding recommended for the first six months of life. After six months, complementary foods may be introduced. Most organizations recommend breastfeeding for at least one year, and the World Health Or...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：2018-09-15 00:00:00
abstract：:Many patients in primary care present with ear pain (otalgia). When the ear is the source of the pain (primary otalgia), the ear examination is usually abnormal. When the ear is not the source of the pain (secondary otalgia), the ear examination is typically normal. The cause of primary otalgia is usually apparent on ...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2008-03-01 00:00:00
abstract：:Tremor, an involuntary, rhythmic, oscillatory movement of a body part, is the most common movement disorder encountered in clinical practice. Rest tremors occur in a body part that is relaxed and completely supported against gravity. Action tremors occur with voluntary contraction of a muscle and can be further subdiv...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2011-03-15 00:00:00
abstract：:Federally funded health centers and the National Health Service Corps (NHSC) depend on family physicians (FPs) and general practitioners (GPs) to meet the needs of millions of medically underserved people. Policy makers and workforce planners should consider how changes in the production of FPs would affect these prog...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：2005-07-15 00:00:00
abstract：:Progestational agents have many important functions, including regulation of the menstrual cycle, treatment of dysfunctional uterine bleeding, prevention of endometrial cancer and hyperplastic precursor lesions, and contraception. Because of the reported side effects of synthetic analogs called "progestins," there has...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2000-10-15 00:00:00
abstract：:The preparticipation physical evaluation is a commonly requested medical visit for amateur and professional athletes of all ages. The overarching goal is to maximize the health of athletes and their safe participation in sports. Although studies have not found that the preparticipation physical evaluation prevents mor...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：2015-09-01 00:00:00
abstract：:Kernicterus and neurologic sequelae caused by severe neonatal hyperbilirubinemia are preventable conditions. A structured and practical approach to the identification and care of infants with jaundice can facilitate prevention, thus decreasing rates of morbidity and mortality. Primary prevention includes ensuring adeq...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2008-05-01 00:00:00
abstract：:Adopted children are emotionally vulnerable. Adoptive parents must cope with more complex problems than biologic parents. The family physician can provide valuable counseling. Preadoption counseling focuses on motivation and ambivalence. After adoption, however, serious, sometimes predictable, issues arise, such as: h...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1976-09-01 00:00:00
abstract：:The incidence of pleural mesothelioma will probably increase into the next century. A complete occupational history should include an inquiry about asbestos exposure, especially in patients with chest pain or dyspnea. The latency period between exposure and mesothelioma is as long as 50 years. In some patients, early ...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1989-03-01 00:00:00
abstract：:Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited cause of kidney disease. Enlarging cysts within the kidneys are the clinical hallmark of the disease. Renal manifestations include varying degrees of kidney injury, urinary tract infections, kidney stones, and hematuria. Extrarenal manif...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：2014-09-01 00:00:00
abstract：:Transient organic causes of impotence include alcohol consumption, drug use or inflammatory genital disease. Many diagnoses of organic impotence, with diabetes, for example, have been premature and have resulted in iatrogenic, psychogenic impotence. After a stroke, heart attack or major surgery, depression may cause i...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1978-02-01 00:00:00
abstract：:Medical problems associated with prematurity are frequently complex, and a multidisciplinary approach is often required. Some common problems include the following: (1) anemia, which can be reduced by iron supplementation, (2) cerebral palsy or mental retardation as a result of intraventricular hemorrhage or periventr...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1998-05-15 00:00:00
abstract：:Disorders of puberty can profoundly impact physical and psychosocial well-being. Precocious puberty is pubertal onset before eight years of age in girls and before nine years of age in boys. Patients with early isolated pubertal changes, prepubertal linear growth, and no worrisome neurologic symptoms typically have a ...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2017-11-01 00:00:00
abstract：:Ectopic pregnancy occurs at a rate of 19.7 cases per 1,000 pregnancies in North America and is a leading cause of maternal mortality in the first trimester. Greater awareness of risk factors and improved technology (biochemical markers and ultrasonography) allow ectopic pregnancy to be identified before the developmen...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2000-02-15 00:00:00
abstract：:Neuroleptic malignant syndrome may occur in patients taking neuroleptics and other psychotropic drugs. The syndrome is characterized by hyperthermia, muscular rigidity, altered consciousness and autonomic instability. Cerebrospinal fluid examination is normal. Treatment includes intensive supportive measures and the u...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1988-02-01 00:00:00
abstract：:Coronary angioplasty is an accepted method of revascularization in selected patients with coronary artery disease. Immediately after a successful angioplasty, initial management concentrates on the detection and treatment of coronary artery spasm and acute vessel closure, should these complications occur. Once the pat...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1990-01-01 00:00:00
abstract：:The female athlete triad is defined as the combination of disordered eating, amenorrhea and osteoporosis. This disorder often goes unrecognized. The consequences of lost bone mineral density can be devastating for the female athlete. Premature osteoporotic fractures can occur, and lost bone mineral density may never b...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2000-06-01 00:00:00
abstract：:Senile dementia of the Binswanger's type is a term used to describe a dementia syndrome characterized by onset in the sixth or seventh decade of life, subcortical neurologic deficits, psychiatric disorders and evidence of hypertension or systemic vascular disease. The status of senile dementia of the Binswanger's type...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1998-12-01 00:00:00
abstract：:Group B streptococcus (GBS) is a leading cause of morbidity and mortality among newborns. Universal screening for GBS among women at 35 to 37 weeks of gestation is more effective than administration of intrapartum antibiotics based on risk factors. Lower vaginal and rectal cultures for GBS are collected at 35 to 37 we...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2005-03-01 00:00:00
abstract：:Thyroiditis is a spectrum of diseases that includes acute, subacute and chronic thyroiditis, all of which demonstrate the histologic findings of inflammation, fibrosis or lymphocytic infiltration. Acute thyroiditis is an infectious disease characterized by the abrupt onset of anterior neck pain and swelling. Subacute ...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1993-09-15 00:00:00
abstract：:Legionella pneumophila is transmitted by aerosolization of water or dust from soil. There are six serotypes and four newly recognized related organisms. Sporadic cased of Legionnaires; disease are more common than epidemic case and are less likely to be suspected . Most reporters cases are characterized by severe pneu...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1981-07-01 00:00:00
abstract：:Bacteroides melaninogenicus and Bacteroides oralis are predominant anaerobes in orofacial infections and aspiration pneumonia. Fusobacterium species are common pathogens in aspiration pneumonia, brain abscesses and orofacial infections. Clostridium perfringens can cause bacteremia and wound infections. Clostridium bot...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1986-10-01 00:00:00
abstract：:Knee effusions may be the result of trauma, overuse or systemic disease. An understanding of knee pathoanatomy is an invaluable part of making the correct diagnosis and formulating a treatment plan. Taking a thorough medical history is the key component of the evaluation. The most common traumatic causes of knee effus...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2000-04-15 00:00:00
abstract：:Nitrous oxide analgesia is a safe alternative to parenteral narcotics for outpatient surgical procedures. This type of analgesia is effective, well tolerated by most age groups, easily administered, rapidly reversible and associated with a low incidence of serious side effects. Hypoxia can be prevented by using fail-s...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Careful examination of a fresh, properly collected urine specimen can indicate the presence of urinary tract disease or uncover unsuspected local or systemic pathology. Urinalysis also can lead to a more complete understanding of a systemic disorder or can assure both the patient and the physician that urinary tract d...
journal_title：American family physician
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Osteopetrosis is a hereditary disorder in which pathologic alteration of osteoclast resorption of bone results in thickening of cortical and lamellar bone. Before bone marrow transplantation, the infantile recessive form was uniformly fatal within the first two decades of life as a result of invasion of the marrow spa...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：1993-01-01 00:00:00
abstract：:Common superficial oral lesions include candidiasis, recurrent herpes labialis, recurrent aphthous stomatitis, erythema migrans, hairy tongue, and lichen planus. Recognition and diagnosis require taking a thorough history and performing a complete oral examination. Knowledge of clinical characteristics such as size, l...
journal_title：American family physician
pub_type： 杂志文章,评审
doi：
更新日期：2007-02-15 00:00:00
