By Y. Mason. Barclay College. 2018.
It was now expected that knowledge would be a fund of observations rather than an elaboration of theological propositions buy zoloft 100mg. But until Virchow’s Cellular Pathology was published in 1858 purchase zoloft 25 mg overnight delivery,11 medicine re m ained a tentative art moving alternatively through old wis dom and new findings zoloft 25mg line. T he doctor had em erged, but a cohesive theoretical fram ework for medicine had not. T he first public health practitioner was the sham an, whose initiatives were crude, but pragmatic and probably effective. As an illustration, the sham an might direct that a residence contam inated by the illness of a resi dent be burned. But these measures, while conceptually consistent with pub lic health, were modest com pared to the measures launched in the nineteenth century. As early as 1853 a physician in London, John Snow, linked a cholera epidemic to contami nated water in a public water pum p. But it took the genius o f Pasteur, Koch, and others, later in the century, to firmly tie infectious disease to environm ental sources. But in the late nineteenth cen tury the idea was startling, and ushered in an entirely new 204 T he Transform ations of Medicine way o f perceiving the environm ent. T he perception of man as a machine also persisted, but the breakthroughs of Pasteur and others modified the m etaphor. Man was still a machine, and disease a functional disorder, but with the rise o f public health it was now conceivable that defects in the machinery could be in troduced by a virulent environm ent. Medicine had slowly im proved its wares, but the health of the population had not dem onstrably improved. M aternal mortality rem ained roughly constant, and longevity did not seem to be affected. T he introduction o f public health pro grams radically im proved the health o f the population. For example, Pettenkofer dem onstrated that the installation of sanitary sewage systems in Munich led to immediate im provements in health status. No longer was health the result o f caprice, aided by the occasionally perceptive physician. Now it was possible to engineer environm ental conditions that dem onstrably en hanced the opportunities for health. T he technologies of public health were m ore complex than those that preceded it. T he im plem entation o f public health program s required larger and m ore complex tools. Im provements in water quality were dependent on biochemical competence, but also required political negotiations to im plem ent, and public education to work. Health was unquestionably im proved and so public health, or population medicine, joined the physician in the pursuit of health. T he patent successes o f public health forced a reconcep tualization of health: The Eras of Medicine 205 Concern for the quality of the environment achieved a rational and coherent expression during the second half of the nineteenth century. In Western Europe and then in the United States, the early phases of the Industrial Revolution had re sulted in crowding, misery, accumulation of filth, horrible working and living conditions, ugliness in all the mushrooming industrial areas, and high rates of sickness and mortality everywhere. The physical and mental decadence of the work ing classes became intolerable to the social conscience and in addition constituted a threat to the future of industrial civiliza tion. Our nineteenth-century forebears approached their problems through a creative philosophy of man in his environment. To achieve health, man had to understand the delicate balance between the species and the environm ent. It is a fundam ental proposition o f Christian theology that the earth is to serve hum an ends. In fact, we have only recently learned that as beneficial as environm ental engineering has been, there can be adverse consequences. In the sum m er of 1974, it was discovered that antipollutant treatm ents of smoke and particulate m atter produced through industrial activity increased the acidity level in the air on the Eastern Seaboard to potentially lethal levels. But in the nineteenth century, almost any im provem ent in the environm ent en gendered an im provem ent in the health of the affected population. T he environm ent was as am enable to engineering as the hum an body was to doctoring. T here could be both patient medicine 206 The Transform ations of Medicine and population medicine. As I recounted in C hapter 3, observers of this form of practice report surgical incisions without the aid o f scalpel and the expression o f blood and tissue without tools. Either the healer uses sleight o f hand to express the tissue and blood, or, through means we do not understand, he “materializes” the substances. T he skeptic, not accepting the possibility o f materialization, then suggests that the case is one o f patent fraud. This is a reasonable question, but there is a far m ore pertinent one: W hat difference does it make to the patient? Observers of psychic surgery report that it does not appear to make any difference—the outcom e for the patient does not appear to depend on the transparency of the fraud. T he principal objection of m odern medicine to unconven tional healing is that it is fraudulent, that it fails to utilize accepted tools and techniques, in short that it is “unsci entific. T he question of the impact on the patient is not raised—but it is the crucial question.
Even symptoms speciWc to drug or alcohol abuse zoloft 50mg visa, such as drug withdrawal symptoms or fetal alcohol syndrome purchase 25mg zoloft amex, are complicated by simple factors such as poor nutrition 100mg zoloft sale. ScientiWc research has supported the racialized nature of debate by focusing research heavily on drugs used most commonly in poor inner cities (such as crack) and not on substances most often abused by higher-income women (such as prescription drugs). Public health warnings typically silhouette African– American or Latina women; they are often produced in Spanish and directed at inner-city neighbourhoods. The circle of causality has widened since feminist advocates started inXuencing media coverage of the issue, and since news stories began suggesting the relation on fetal health of the combined eVects of poverty, addiction and exposures to workplace and environmental toxins. If she lives in a low-income neighbourhood, she is likely to be exposed to lead from outdated plumbing or in the dust from old paint (Massachusetts Coalition for Occupational Safety and Health, 1992). The absence of fathers in news reports of crack babies was made easier to believe by the racial subtext of the story: African–American women are often characterized as abandoned, single mothers – women dangerously unconstrained by nuclear family relations. Virile fathers and the ‘all or nothing’ sperm theory Embedded in scientiWc research and newspaper and magazine stories were further assumptions about male reproduction that posed serious barriers to the father/fetal connection. ScientiWc literature on reproductive toxicity has traditionally dismissed the links between paternal use of drugs and alcohol (or exposure to occupational or environmental toxins) and harm to fetal health, because it was assumed that damaged sperm were incapable of fertilizing eggs. By deWning male repro- ductive health along the principles of this ‘all or nothing’ theory, most scientiWc studies until the late 1980s dismissed the possibility that defective sperm could contribute to fetal health problems. As Emily Martin has so well documented, scientists characterized the egg as the passive recipient and the sperm as conqueror in the process of fertilization (Martin, 1991). The assumption that men harmed by toxic exposures would be rendered infertile deXected research away from the connections between fathers and fetal harm. As a result of the ‘virile sperm’ theory of conception, scientiWc studies, until the late 1980s, focused almost exclusively on infertility as the primary outcome of hazardous exposures and the main source of reproduc- tive problems for men. Male reproductive health was deWned by ‘total sperm ejaculate’, and healthy reproductive function was measured by ‘ejaculatory performance’ – measures of volume, sperm concentration and number, sperm velocity and motility, sperm swimming characteristics, and sperm morphology, shape and size (Burger et al. Between fathers and fetuses 119 Scientists who did try to pursue the father–fetal connection, such as Gladys Friedler at Boston University – who was the Wrst to document a link in mice between paternal exposure to morphine and birth defects in their oVspring in the 1970s – had diYculty funding their research or publishing their work. The signiWcance of Friedler’s work is that she found mutagenic eVects from paternal exposures not only in the progeny of male mice exposed to mor- phine and alcohol, but also in the second generation or ‘grandchildren’ of exposed mice. In all cases, she controlled for maternal exposures so that causality could be more clearly linked to paternal exposures (Friedler and Wheeling, 1979; Friedler, 1985, Friedler, 1987–8). By 1990, researchers at the University of Copenhagen had examined 61 sperm-count studies and determined that there had, in fact, been a 42 per cent decline in sperm count over the past 50 years, from 113 to 66 million per millilitre of semen (Carlsen et al. While this was far from the 20 million generally assumed to be the minimum for male fertility, it raised concern lest the downward trend should continue. After controlling for both prom- iscuity levels and discounting the ‘jockey shorts’ thesis, the Copenhagen researchers found an association between the increase in testicular cancer in key countries and substantial sperm-count declines. Although still concentrating on male fertility, rather than on potential links between paternal exposure and fetal harm, the Copenhagen study did suggest that sperm might be more vulnerable to hazards than previously assumed, and that more research was needed on the potential links between toxic exposures and male reproductive health prob- lems. But the links between paternal exposures and fetal health problems would not fully emerge until the assumption that damaged sperm were incapable of fertilization was thrown into question by a larger shift in the dominant paradigm of fertility and reproduction, a shift generated by the development of the ‘seductive egg’ theory. Unlike mammalian reproduction, sea urchins engage in ‘external fertilization’ – sperm are released into the ocean, where they must locate eggs Xoating free in the sea. Scientists explained sperm’s ability to Wnd eggs of the same species by postulating that eggs release a substance or ‘chemical signal’ that attracts sperm (Shapiro, 1997: p. As Science News recharacterized the process of fertilization, ‘A human egg cell does not idle languidly in the female repro- ductive tract, like some Sleeping Beauty waiting for a sperm Prince Charming to come along and awaken it for fertilization. Instead, new research indicates that most eggs actively beckon to would-be partners, releasing an as-yet- unidentiWed chemical to lure sperm cells’ (Ezzell, 1991: p. Emily Martin has noted that scientists confronted with this new evidence in the late 1980s vacillated between a model that emphasized the egg as seductress and the more mutual paradigm of sperm–egg fusion (Martin, 1991). The fusion model is devoid of (most of) the human agency imparted to eggs and sperm in traditional descriptions, opting instead for a characterization that relies on a simple chemical process. Changing characterizations of the process of fertilization thus created a new context (valid or not) for research supporting the link between paternal exposures and fetal harm. The evidence of male-mediated developmental toxicology Male reproductive exposures are now strongly suspected of causing not only infertility but also miscarriage, low birth weight, congenital abnormalities, cancer, neurological illness and other childhood health problems (Davis et al. Studies of male reproductive health and toxicity have Between fathers and fetuses 121 concentrated primarily on the eVects of occupational and environmental exposures of men and less on the eVects of what scientists refer to as men’s ‘lifestyle factors’, such as drinking, smoking, or drug use (Davis et al. Because adult males continuously produce sperm throughout their lives, the germ cells from which sperm originate are continuously dividing and developing. Sperm take approximately 72 days to develop to maturity, and then move for another 12 days through the duct called the epididymis, where they acquire the ability to fertilize an egg. During this developmental process, sperm may be particularly susceptible to damage from toxins because cells that are dividing are more vulnerable to toxicity than cells that are fully developed and at rest, as are eggs in the female reproductive system. Abnor- mal sperm may still be capable of fertilizing an egg because speed may be more important than size or shape, as was suggested in the earliest article on this subject (Moore, 1989). Some of the earliest epidemiological research studied the eVects of radi- ation exposures on the children born to men who survived the atomic bombs at Nagasaki and Hiroshima. However, few associations were found between paternal exposures and childhood health problems, possibly due to the fact that so few men conceived children in the six months after the bombing, when the exposure eVects of radiation were at their strongest (Yoshimoto, 1990; Olshan and Faustman, 1993). Vietnam veterans concerned about the eVects of the herbicide Agent Orange called for studies on links between male exposures during the war and childhood diseases of their oVspring. Other studies also showed increased rates of spinal malformation, spina biWda, congenital heart defects and facial clefting in the children of Vietnam veterans. Seventeen studies have now evaluated the impact of pesticides and herbicides on male reproduction and paternal–fetal health (Olshan and Faustman, 1993: p. Other studies have analysed the eVects of occupational exposures on paternal–fetal health, with many Wnding signiWcant associations between paternal exposures and fetal health problems. Paints, solvents, metals, dyes and hydrocarbons have been asso- ciated with childhood leukaemia and childhood brain tumours (summarized in Olshan and Faustman, 1993: p. In analyses by occupation, janitors, mechanics, farm workers and metal workers have been reported to have an excess number of children with Down’s syndrome (Olshan and Faustman, 1993: p.
Slight elevations in core temperature may herald the development of serious infection in such patients zoloft 100 mg, and should be investigated and treated early buy 25 mg zoloft with amex. Rigors are associated with a sudden rise in core temperature purchase 50 mg zoloft with visa, with increased energy expenditure. They may result in cardiorespiratory instability, and increase the requirement for inotropic and ventilator support; tachycardia, tachypnoea and hypotension may occur. Chills and rigors must always be taken seriously, as they usually indicate the presence of infection, due to bacteria or viruses, or malaria. In turn, fever may shift the oxygen dissociation curve to the right, resulting in increased oxygen extraction by the tissues. For every degree centigrade increase in temperature, oxygen demand and energy expenditure increase by about 6- 10%. While fever has beneficial effects in combating infection, it can also be harmful; it can cause protein catabolism, and cerebral damage, especially if the temperature is very high, and lasts an hour or longer. Warming the patient rather than cooling the patient is preferable, as warming the patient reduces the temperature gradient between the body and the environment, and this reduces heat generation and metabolic stress. In general, patients Pyrexia 31 Handbook of Critical Care Medicine should be nursed at an ambient temperature around 32ȗ C; this can be achieved by using blankets or warmers. In practice this is difficult, and rectal, oral or axillary temperature is measured. However, these are less reliable, and temperature changes may lag behind core temperature. Rectal temperature is preferable to oral and axillary temperature; oral temperature can be affected by taking cold or warm liquids. The importance of ‘patterns’ of fever We are often taught about characteristic patterns of fever – alternate day fever in malaria, stepladder fever in typhoid, evening pyrexia in tuberculosis. In critically ill patients these characteristic patterns have very poor predictive value, and diagnosis and decisions should not be based on fever patterns. In critically ill patients, fever often has a diurnal variation, with fever being higher towards the evenings. Causes of fever in critically ill patients The causes differ depending on at what point the patient developed fever. If fever was the presenting feature, it could be due to any infective cause, viral, bacterial, protozoal or fungal, or could be due to non-infective causes. Of the infective causes, viral and bacterial infections are more common than fungal and non-infective causes. Dengue and influenza are important viral infections which can result in the patient becoming seriously ill. Bacterial infections could be divided into systemic infections resulting in characteristic syndromes (typhoid, tuberculosis, leptospirosis etc) and organ/region specific infections; pneumonia, urinary tract infection, meningitis, sinusitis, cellulitis, liver abscess, endocarditis are common and important organ specific causes, which can result in the development of severe sepsis. In some situations, the source of infection which results in bacteraemia is unclear, and infection is confirmed by only a positive blood culture. Malaria is an important cause, especially in travellers, and those who have received blood transfusion. Bacterial infections are the most common, and Pyrexia 32 Handbook of Critical Care Medicine the pattern of organisms as well as their antibiotic sensitivity is different from community acquired infections. Fungal infections are also common, and their incidence is increasing with the increased use of broad spectrum antibiotics. Nosocomial infections Nosocomial (hospital acquired) infections complicate the course of illness in around 30% of critically ill patients. Fungal sepsis: what conditions predispose to it Severely ill patients, those with diabetes, renal failure, liver cirrhosis, immunocompromised states, and those who have been on broad spectrum antibiotics are at risk of developing fungal sepsis. Often, fungal infections are superficial, oral thrush due to Candida being the commonest, although systemic fungal infections can occur. The source of infection maybe obvious, such as pneumonia, worsening cellulitis/gangrene, wound infection, or may have been revealed by routine clinical examination or routine daily investigations. This is a gross oversimplification, but in general, x Pneumonia- pneumococci, Haemophilus, Pseudomonas, Staphylococcus, Klebsiella x Aspiration pneumonia – oral anaerobes x Urinary tract infection – Coliforms Pyrexia 35 Handbook of Critical Care Medicine x Cellulitis of a limb – Staphylococcus, Streptococci, Gas forming organisms x Meningitis – Meningococcus, Pneumococcus, Listeria, x Intra-abdominal infection – coliforms, intestinal anaerobes 7. Thromboembolism, pancreatitis, drug induced fever, neuroleptic malignant syndrome, Cerebrovascular events involving the pons or hypothalamus. Relevant clinical examination A relevant detailed clinical examination is of utmost importance. Next, starting from the head, do a detailed screen of x Haematomas on the scalp (infected), abscesses x Neck rigidity and Kernig’s sign x Sinuses – tenderness. Low blood pressure with a wide pulse pressure may herald the development of septic shock. Investigations The most commonly performed investigation is a white blood cell count. A high total count with neutrophil leukocytosis suggests bacterial infection; examination of the blood picture may demonstrate a ‘left shift’, and toxic granulation of the neutrophils. Remember that a low white cell count 9 (below 4 X 10 /L) could also indicate infection. If fever occurs, blood culture must be taken before antibiotics are started, or, if the patient is already on antibiotics, before changing the antibiotic regimen. If present, any fluid from drains should be sent for culture, together with wound swabs and pus from discharging wounds or abscesses. Routine throat swabs, nasal swabs, skin swabs (groin, axilla) are of no particular use.
Instead trusted zoloft 100 mg, Patient Education zoloft 25mg lowest price, Screening purchase 50mg zoloft, Brief risky users of addictive substances are in most Interventions and Treatment Referrals cases sanctioned in terms of the consequences that result--such as accidents, crimes, domestic Despite the documented benefits of screening violence, child neglect or abuse--while effective * and early intervention practices, medical and interventions to reduce risky use rarely are other health professionals’ considerable provided. Those with addiction frequently are potential to influence patients’ substance use referred to support services, often provided by decisions, and the long list of professional health similarly-diagnosed peers who struggle with organizations that endorse the use of such limited resources and no medical training, to activities, most health professionals do not assist them in abstaining from using addictive educate their patients about the dangers of risky substances. While social support approaches are substance use or the disease of addiction, screen helpful and even lifesaving to many--and can be for risky substance use, conduct brief important supplements to medically-supervised, interventions when indicated, treat the condition evidence-based interventions--they do not or refer their patients to specialty care if qualify as treatment for a medical disease. Based on those principles, risky current approaches is required to bring practice substance use and signs of addiction are highly in line with the evidence and with the standard conducive to screening by general health of care for other public health and medical practitioners: they are significant health conditions. Unfortunately, there is a addictive substances and provide brief considerable gap between what current science interventions, physicians should be essential suggests constitutes risky substance use and the providers of the full range of addiction treatment thresholds set in some of the most common services. There are many venues where health identify, intervene and treat it, continued failure professionals can conduct patient education, to do so signals widespread system failure in screening and brief interventions with relative health care service delivery, financing, ease and most patients would be receptive to professional education and quality assurance. These include primary care This gap between evidence and practice is medical offices, dental offices, pharmacies, particularly acute for adolescents because of the school-based health clinics, mental health critical importance of prevention and early centers and clinics, emergency departments and intervention in this population. Screening and trauma centers, hospitals or encounters with the intervention services by health professionals for justice system due to substance-involved adolescents rarely is part of routine practice 7 crimes. A survey th- th patients about their substance use when they of 6 through 12 -grade students found that 9 suspect a patient has a problem. This asymptomatic patients in clinical settings contrasts significantly with referrals to other estimates that only 35 percent of the population specialists wherein the treatment is regularly communicated and a collaborative relationship is receives tobacco screening and brief 10 interventions in accordance with the maintained. The consequences of failure to identify risky use or detect signs of addiction can be life † 52. Mistaking symptoms of risky who quit smoking in the past year for six months or substance use for signs of other conditions may longer) had made a quit attempt that lasted longer lead to a misdiagnosis or to prescribing than one day in the past year; however, only 6. Another national survey of their patients’ smoking status at 68 percent of of nurses’ interventions with patients who † 24 office visits, they provided smoking cessation smoke found similar results. A promulgated widely by the United States Public national survey of medical professionals-- Health Service and the Agency for Healthcare including primary care physicians, emergency Research and Quality, approximately three in 10 medicine physicians, psychiatrists, registered dental professionals still do not advise patients nurses, dentists, dental hygienists and who smoke to quit and approximately three- pharmacists--indicates that whereas most report quarters do not refer a patient who smokes to a 26 asking patients if they smoke and advising those smoking cessation program. This is despite the who smoke to quit, they are much less likely to fact that many patients expect their dentists to follow through with assessments or referrals to a inquire about their smoking status and to discuss 19 smoking cessation program. Although most cessation intervention can expect that up to 10 to (86 percent) report asking patients about their 15 percent of their patients who smoke will quit 28 smoking and advising them to quit, few do much in a given year. This is in spite pulmonologists, cardiologists and family of the facts that pharmacists are one of the most physicians were the physician specialists most accessible groups of health professionals and likely to be familiar with resources regarding they work in settings frequented by smokers and 30 treatment for addiction involving nicotine and where tobacco cessation products are available. Only 24 percent of nurses recommended medications to patients for cessation, * Both female patients and patients ages 65 and older 22 percent referred patients to cessation resources were less likely to be prescribed medication. While behind the pharmacy counter where customers respondents ages 18-25 years were most likely would have to ask for them, or within view of to engage in excessive drinking, they were least * the pharmacist but accessible to customers, is likely to be asked about their alcohol use (34 related to a greater likelihood of pharmacist- percent of excessive drinkers ages 18 to 25 years initiated smoking cessation counseling. The American customers were three times likelier to offer College of Surgeons Committee on Trauma counseling than those who stored them out of designated alcohol and other drug screening as 33 customers’ sight. A national survey of patients intervention services for those who may need 39 who had visited a general medical provider in them. However, another stabilization and treatment options, addiction study found that, among adolescent patients treatment today for the most part is not based in diagnosed with addiction, primary care 46 physicians recommended some type of follow- the science of what works. A study of social factors, some people with addiction may adolescents admitted to an inpatient psychiatric ‡ be able to stop using addictive substances and unit found that one-third met clinical criteria for manage the disease with support services only; addiction, but outpatient clinicians had not however, most individuals with the disease identified addiction in any of these patients 47 53 require clinical treatment. A recent national addiction or provide them with referrals to ** 55 survey found that approximately two-thirds of treatment. In fact, of discharges from detoxification programs research shows improved addiction treatment transferred to a treatment facility. In light of this evidence, some states † illicit drug detoxification discharges, 18. One study found that fewer than half (43 Addiction Treatment Rarely Addresses percent) of addiction treatment programs in the Smoking. Although recent scientific evidence United States offer formal smoking cessation underscores the unitary nature of the disease of services; no data are available on the extent to addiction and the consequent need to address which nicotine addiction is fully integrated into 60 ** addiction involving all substances, many these treatment programs. Among those that addiction treatment providers continue to do offer cessation services, more offer address addiction involving alcohol, illicit drugs pharmaceutical interventions than psychosocial 69 and controlled prescription drugs while largely interventions (37 percent vs. Although rates of smoking among adolescent Smoking cessation services are not commonly addiction treatment patients are high and 62 70 implemented in addiction treatment settings or effective interventions are available, less than 63 in psychiatric treatment settings. There is no evidence that quitting smoking interferes with Less than 20 percent of addiction treatment providers received any training in smoking- 72 * related issues in the past year. Thirty-eight addiction treatment into mainstream medicine is percent of publicly-funded programs do not even broader implementation of pharmaceutical have access to a prescribing physician, nor do 23 74 81 interventions, when indicated. National data indicate that among privately- and publicly-funded treatment Addiction treatment medications also may be programs, approximately half have adopted at underutilized by physicians themselves due in least one pharmaceutical treatment for part to insufficient evidence regarding optimal ‡ 79 addiction. Seventeen percent program would adopt the use of pharmaceutical of physicians unwilling to prescribe the 87 treatments for addiction, having access to a medication said that addiction involving opioids staff physician does not guarantee access to or is best described as a habit rather than an illness; 88 use of pharmaceutical treatments. One study none of the physicians willing to prescribe the found that 82 percent of publicly-funded medication agreed with this statement. Half of addiction treatment programs with access to a the Maryland doctors who were not willing to physician did not prescribe any treatment prescribe buprenorphine reported that they medications for addiction involving alcohol; the believe that treatment for addiction involving same is true of 41 percent of privately-funded opioids is beyond the scope of practice of office- treatment programs with access to a prescribing based physicians and 46 percent reported not 89 physician. The treatment of addiction involving opioids presents one of the most glaring examples of the The reason I am not interested [in prescribing underutilization of clinically-effective and cost- buprenorphine] is I see this as an opportunity for effective pharmaceutical treatments for drug users who are by class the most lying, 91 addiction. They need treatment for addiction involving opioids that, hard-based, no-nonsense treatment programs. I 90 despite a rich body of evidence demonstrating its can’t stand their manipulative behavior. The majority (86 percent) of addiction counselors report not being aware of the effectiveness of The fact that buprenorphine can be prescribed in 95 buprenorphine. Addiction professionals buprenorphine] than we expected, especially anticipated the medication’s potential to help 96 among primary care physicians.
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