By J. Jose. Gordon College.
Had I not known of my relatives’ deafness buy malegra dxt 130 mg free shipping, I think I would continually be casting round for the cause of my own problems buy malegra dxt 130 mg otc. I had some comfort from the fact my family had coped in more difﬁcult circumstances. My family history of hearing problems made me aware of the problem and prompted me to seek help sooner. For exam- mented the lay understanding of genetics (1,2) and has looked ple, a cochlear implant or hearing aid aims to restore hearing as at case-study discussion of the experience of living with a much as possible, with the view that to be hearing is the preferred genetic disorder (3). However, this perspective is in stark con- explore the experience and speciﬁc demands that deaf patients trast to the way deafness is viewed as part of the “cultural” model. Within this, deafness is not a disability, but rather an experience This chapter provides an overview of some of the research that is just different, and certainly not defective. Here, the main that has been done to investigate the attitude of deaf people and form of communication is often sign language. Before this is sider themselves “culturally Deaf” (written with an upper case D) covered, it is introduced with an overview of the different per- will often not perceive that they have a disability or impairment. This is followed by more practical sections They feel positive and empowered by their language and have a on genetic testing services and what happens within genetic strong Deaf identity (4). Then, a brief summary is given on the historical con- many other Deaf people (5,6). Deaf identity evolves over time, text to issues surrounding genetics, eugenics, and deaf people. These people may come from fami- quences may vary, and this may impact in different ways on the lies where there are several relatives who are deaf. Deaf people may have to alter culture” exists in many countries across the World, e. Such indi- have this opinion because the thought of having hearing chil- viduals may also choose to mix, socialize, and work with other dren ﬁlls them with worry. This may lead them to asking: “How Deaf people and may also choose to have a partner who is Deaf. Although It is possible that another deaf child would ﬁt better into the most people have a congenital or early onset, profound level of family unit if other deaf children were already present, a hear- deafness, there are many people with this level of deafness who ing child may just feel isolated. Conversely, the author indicated that she would actually prefer to have deaf there are people with a mild level of deafness and residual hear- children even though she was personally hearing. Much depends on the d/Deaf Some deaf parents have said that they would choose not to parent’s own values and beliefs about their deafness and their have deaf children, if it could be avoided (11). They are also more likely to feel that there are advan- Whereas other d/Deaf parents of deaf children felt the experi- tages to being deaf within a deaf family; one such deaf parent in ence was positive—they were lucky to have the opportunity to the author’s research commented: “I (can) share my skills and pass on their language, history, and culture as well as deafness to knowledge of deafness. I (can) understand her (daughter’s) needs their children and they were proud of this (11). It’s society without “deaf awareness” that made them feel disad- about coping with either a deaf or a hearing child. Otherwise we are all happy and (a) close-knit family with also have a greater awareness of what deafness in a child would (the) same rich language (and) culture” (11). It would be logical to conclude from this that more hearing people than deaf people would be interested to ﬁnd out whether Preferring to have deaf or a baby was likely to be deaf or hearing, via the use of a prenatal hearing children genetic test. They may also feel more anxious to learn as soon as possible if their baby is likely to be deaf so that they can have In 2002, a deaf lesbian couple from the United States chose to a choice as to whether to continue with the pregnancy or not. Although not actively using genetic intervention, they hoped that genetic inheritance would be favourable for them, as they wanted to increase the chances of passing deafness on. This Genes, deafness, and genetic case caused international debate about the ethics of deliberately creating what some people felt was a “disabled” child (12–17). Deafness can result from different factors, including environmen- Passing on deafness to the next generation would keep the Deaf tal and genetic causes (22). Out of the 1 in 1000 to 2000 children culture alive and would mean that the Deaf community would with severe-profound, congenital, or early onset deafness, continue to thrive (18,19). Dolnick (19) comments on this in between 20% and 60% are thought to be deaf due to genetic “Deafness as Culture”: “So strong is the feeling of cultural solidarity causes, 20% to 40% due to environmental causes, and the that many deaf parents cheer on discovering that their baby is deaf. Between 59% and 85% of Attitudes of deaf people and their families towards issues surrounding genetics 165 cases of genetic deafness are thought to be caused by autosomal Genetic counselling for deafness recessive genes, 15% to 33% by autosomal dominant genes, and up to 5% by X-linked or mitochondrial genes (26–28). There is often interest from Deaf individuals to know if and Several hundred genes are known to play a part in inher- how they have inherited their deafness and what the chances ited deafness (29). Alterations in the connexin 26 gene are are of passing this on to their children (35). These are issues thought to account for up to 50% of childhood genetic deaf- that can be covered within the clinical service of genetic coun- ness, with 1 in 31 people carrying alterations in this gene in cer- selling. Such services are available from genetic counsellors and tain populations (30,31). Advances in which patients or relatives at risk of a disorder that may be the molecular genetic research into deafness mean that, for cer- hereditary are (informed) of the consequences of the disorder, tain families, it is possible to offer a genetic test to deﬁne whether (and) the probability of developing or transmitting it” (36). Such testing and information genetic conditions and their heritability within a supportive relating to this is can be obtained via genetic counselling services.
There may be an obvious aetiology malegra dxt 130mg low cost, for example purchase 130 mg malegra dxt with amex, a hiatus hernia, but quite often a cause for the erosion cannot be identified (Chapter 101152H ). Key Points Oral features in cerebral palsy: • gingival hyperplasia; • increased caries prevalence; • malocclusion; • dental trauma; • enamel hypoplasia; • heightened gag reflex; • dental erosion and abrasion (bruxism). Plentiful reassurance, efficient suction and skilled assistance are vital to success in these situations. Impaired ventilation may accompany scoliosis and becomes an even more important consideration if procedures involving a general anaesthetic are contemplated. Children who spend long periods in one position may be predisposed to pressure sores, therefore lengthy procedures in the dental chair without a break are best avoided. Patients can experience acute discomfort during tooth preparation or ultrasonic scaling (even when the affected teeth are distant from the operating site), merely from the cold produced by high volume aspiration. The use of a desensitizing agent like Duraphat fluoride varnish or fissure sealing the symptomatic surface can be helpful if a restoration is not indicated. Hypoplastic enamel does not have the same ordered prism structure as normal enamel and, despite acid etching, may not provide optimum retention for conventional resins. Some less severely disabled children will have little or no intellectual impairment but will have a degree of spasticity or rigidity. This may prevent them from co-operating fully with dental procedures, despite their willingness to do so, and they may be helped by nitrous oxide sedation (Chapter 41155H ). Most children require help with brushing until they are 7 years or older, but for the child with physical limitations this may be a permanent commitment on the part of carers. Limited or bizarre muscle movements prevent normal mouth clearing and food is often left impacted in the vault of the palate. This is readily removed with the end of a toothbrush handle or a spoon handle, but carers need to be aware of the potential for this, otherwise food residues may be left in the oral cavity for days. Powered toothbrushes may be helpful for a child with limited dexterity, not only because of the relative efficiency of cleaning but also because of the larger size of the handle of most of these brushes. When normal limb movement is impaired or absent and/or normal speech is impossible, the mouth assumes an even greater importance as a means of holding mouthsticks to grasp pens or to operate a variety of equipment. It is vital the dentition is maintained to the highest standard as the successful use of such mouthsticks is reliant on having a good occlusal table for balanced contact (Fig. Children with cerebral palsy, especially where there is accompanying intellectual impairment, will on occasion adopt a habit of self-mutilation by chewing soft tissues around the mouth (Fig. It is distressing for the parents as the child is obviously in pain from the ulcerated areas and may refuse all food and drink, but there is little they can do to break the habit. There are a number of solutions to the problem depending on the cause and the severity of the condition. In a child who is erupting primary teeth it may be possible to fit an occlusal splint, provided that sufficient teeth are available for retention. Fabrication of the splint may necessitate a short general anaesthetic for impression- taking. Alternatively, addition of glass ionomer cement to the occlusal surfaces of the primary molars, to open the occlusion and prevent the teeth contacting the soft tissues, may be successful. If only anterior primary teeth are present then composition, moulded over the offending tooth surfaces as a temporary splint, may break the habit and allow healing (Fig. If the problem is more severe and a splint is not feasible, it is sensible to extract the primary teeth involved. In the permanent dentition, rounding-off the pointed or sharp tooth surfaces and/or fitting a splint is usually successful. Ensuring that the child has plenty of fluids is of paramount importance as small, debilitated children rapidly become dehydrated. For some disabled children this can be excessive, although surgery to divert the submandibular flow more posteriorly may alleviate the problem. However, this is not always successful and carries the risk of increasing caries prevalence as a result of the greatly diminished salivary volume. The use of acrylic training plates that encourage the formation of an oral seal as well as promoting a more active swallowing mechanism so that saliva does not pool in an open mouth may be helpful (Fig. Concurrent work with speech and language therapists will help with the necessary therapy that is fundamental to the success of such treatment. Anecdotal case reports support the use of these plates, but few studies have been published that give objective data on their success. However, one relatively non-interventional method of reducing saliva flow is the use of hyoscine hydrobromide, a drug which blocks parasympathetic transmission to the salivary glands. Diet Considerations on dietary aspects have been covered in the section on intellectual impairment (Section 17. Some children, because of a failure to thrive, will be fed through a gastrostomy site. If the child is exclusively fed via this route, they will tend to accumulate large deposits of calculus. These need to be removed from surfaces adjacent to the gingival margins in particular.
With passive elevation of the legs 130mg malegra dxt otc, the mur- lying ﬂat and better when sitting upright quality malegra dxt 130mg. Tricuspid regurgitation decrease in macrovascular complications (coronary ar- tery disease, stroke) in patients with diabetes and dyslipi- V-104. Insulin resistance and fasting hyperglycemia are im- demia except portant when creating a treatment program for the meta- A. Metformin is more effective than the combination of weight reduction, dietary fat restriction, and in- V-108. Pulsus paradoxus can be described by which of the creased physical activity for the prevention of diabe- following statements? Metformin is superior to other drug classes for in- asthma exacerbations in which the negative intra- creasing insulin sensitivity. Thiazolidinediones, but not metformin, improve in- with a resultant increase in systolic pressure during sulin-mediated glucose uptake in muscle. Pulsus paradoxus has not been described in patients ducing the incidence of diabetes mellitus. Pulsus paradoxus describes the ﬁnding of dimin- myopathy is offered a heart transplant from a 20-year-old ished pulses during inspiration, when the peripheral female with brain death after a skiing accident. A drop in systolic pressure during inspiration of vised about if he decides to accept the heart? Risk of rejection of transplanted organ when there is an exaggeration of the normal decrease C. A 35-year-old woman is admitted to the hospital with malaise, weight gain, increasing abdominal girth, V-106. The swelling in her legs has gotten baseline, his exercise tolerance is normal, but he has lim- increasingly worse such that she now feels her thighs are ited his activity in the past few days due to fear of exacer- swollen as well. She was treated at that time with normal blood pressure, heart rate is 104 beats per chemotherapy and mediastinal irradiation. On physical minute, respiratory rate 22 breaths per minute; oxygen examination, she has temporal wasting and appears saturation 91% on room air. The sound is short and abrupt and is heard lar hypertrophy, and T-wave inversions in V2 and V3. A strong parental history of sudden cardiac death as room complaining of shortness of breath, chest pain, and a presenting history of coronary artery disease in- dizziness. An estimated 50% of all cardiac deaths are sudden aspirin and lay down, but the symptoms worsened. As many as 70–75% of men who die of sudden car- called 911, and upon arrival to the emergency room, he diac death have evidence of acute myocardial infarc- was found to be hypotensive and tachycardic. On physical examination, he survival rates are no better than 25–30% in the out- appears in distress and is diaphoretic. A 64-year-old man suddenly collapses while playing sounds are regular and tachycardic. Initial rhythm on cardiac monitor is ven- Emergency cardiac catheterization is scheduled, and it is tricular ﬁbrillation. What is the ﬁrst step in the treatment estimated that the catheterization laboratory will be of this patient? The patient remains hypotensive with a blood pressure that is now 68/38 mmHg, and the A. What is a full 5 min prior to attempting deﬁbrillation the best management for the patient’s hypotension? A 64-year-old woman is admitted to the emer- strated to improve survival to hospital discharge with fa- gency room with hypotension and chest pain. Her vorable neurologic outcome in out-of-hospital cardiac symptoms began 30 min ago, awakening the patient arrest? Given is sinus with occasional premature ventricular contrac- the characteristics of his chest pain, it is decided that he tions. He has a history of shows normal left ventricular function and right ven- myocardial infarction involving the left anterior descend- tricular dilatation. What is the best immediate treat- ing artery 2 years ago, for which he received reteplase with ment for this patient’s hypotension? You are called to the bedside to see a patient with 99m nuclear stress test is shown in Figure V-115 (Color Prinzmetal’s angina who is having chest pain. Reversible ischemia of the anteroapical wall lowing additional disorders is the patient most likely to D. A 56-year-old man is admitted to the hospital for history is remarkable for early coronary artery disease in newly diagnosed heart failure. Home medications include chlorthalidone, his pulse is irregular, he has an S3, and a laterally dis- simvastatin, aspirin, albuterol, and home oxygen. Which aspects of this patient’s history add to the limb leads, and ﬁrst-degree atrioventricular block the likelihood that he might have death, myocardial in- without evidence of prior myocardial infarction. Systolic anterior motion of the mitral valve he has limited his activity in the past few days due to fear E.
For example purchase malegra dxt 130mg line, if our population is approximately normally dis- tributed buy 130mg malegra dxt amex, we can still use a parametric procedure. As you’ll see, both parametric and nonparametric procedures are performed in the same way. Creating the Experimental Hypotheses Recognize that the purpose of all experiments is to obtain data that will help us to resolve the simplest of debates: maybe my independent variable works as I think it does versus maybe it does not. Experimental hypotheses describe the predicted relationship we may or may not find. One hypothesis states that we will demonstrate the predicted relationship (manipulat- ing the independent variable will work as expected). The other hypothesis states that we will not demonstrate the predicted relationship (manipulating the independent vari- able will not work as expected). Sometimes we expect a relationship, but we are not sure whether scores will increase or decrease as we change the independent variable. A two-tailed test is used when we predict a relationship but do not predict the direction in which scores will change. Notice that a two-tailed test occurs when we predict that one group will pro- duce different dependent scores than the other group, without saying which group will score higher. For example, we have a two-tailed test if we propose that “men and women differ in creativity” or that “higher anxiety levels will alter participants’ test scores. A one-tailed test is used when we predict the direction in which scores will change. We may predict that as we change the independent variable, the dependent scores will only increase, or we may predict that they will only decrease. Notice that a one-tailed test occurs when we predict which group will have the higher dependent scores. For example, we have a one-tailed test if we predict that “men are more creative than women” or that “higher anxiety levels will lower test scores. A one-tailed test is used when you do predict the direction that scores will change. Remember, however, that ultimately researchers want to describe what occurs in nature, in what we call the population. Therefore, although we must first see that the independent variable works as predicted in our sample, the real issue is whether we can conclude that it works in the population. Designing a One-Sample Experiment There are many ways we might design a study to test our pill, but the simplest way is as a one-sample experiment. We will randomly select one sample of participants and give each person, say, one pill. The sample will represent the population of people who have taken one pill, and the sample X will rep- resent the population. Therefore, we must compare the population represented by our sample to some other population receiving some other amount of the pill. To perform a one-sample experiment, we must already know the population mean under some other condition of the independent vari- able. Here our independent variable is the amount of the pill taken, and one amount that we already know about is zero amount. Setting Up Inferential Procedures 211 We will compare this population that has not taken the pill to the population that has taken the pill that is represented by our sample. If the population without the pill has a different than the population with the pill, then we will have demonstrated a relationship. Creating the Statistical Hypotheses So that we can apply statistical procedures, we translate our experimental hypotheses into statistical hypotheses. We are still debating whether our independent variable works, but now we state this in terms of the corresponding statistical outcomes. Statis- tical hypotheses describe the population parameters that the sample data represent if the predicted relationship does or does not exist. The two statistical hypotheses are the alternative hypothesis and the null hypothesis. The Alternative Hypothesis It is easier to create the alternative hypothesis first because it corresponds to the experimental hypothesis that the experiment does work as predicted. The alternative hypothesis describes the population parameters that the sample data represent if the predicted relationship exists. The alternative hypothesis is always the hypothesis of a difference; it says that changing the independent variable produces the predicted difference in the populations. We don’t know how much scores will increase, so we do not know the value of the new with the pill. But we do know that the of the population with the pill will be greater than 100 because 100 is the of the population without the pill. Again, we don’t know how much the pill will decrease scores, but we do know that the of the popula- tion with the pill will be less than 100. If the pill works as predicted, then the population with the pill will have a that is either greater than or less than 100. Because the without the pill is 100, Ha implies that a relationship exists in the population.
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