By D. Gembak. Urbana University. 2018.
Regurgitation is a passive zoloft 50 mg with amex depression iq test, often silent order zoloft 25mg otc mood disorders kaplan ppt, flow of stomach contents (typically fluid) up the oesophagus, with the risk of 26 Airway control, ventilation, and oxygenation inhalation and soiling of the lungs. Failure to maintain a clear airway during spontaneous ventilation may encourage regurgitation. This is because negative intrathoracic pressure developed during obstructed inspiration may encourage aspiration of gastric contents across a weak mucosal flap valve between the stomach and oesophagus. Recent food or fluid ingestion, intestinal obstruction, recent trauma (especially spinal cord injury or in children), obesity, hiatus hernia, and late pregnancy all make regurgitation more likely to occur. During resuscitation, chest compression over the lower sternum and/or abdominal thrusts (no longer recommended) increase the likelihood of regurgitation as well as risking damage to the abdominal organs. Gaseous distension of the stomach increases the likelihood of regurgitation and restricts chest expansion. Inadvertent gastric distension may occur during assisted ventilation, especially if large tidal volumes and high inflation pressures are used. This is particularly likely to happen if laryngospasm is present or when gas-powered resuscitators are used in Sellick manoeuvre of cricoid pressure conjunction with facemasks. The cricoid pressure, or Sellick manoeuvre, is performed by an assistant and entails compression of the oesophagus between the cricoid ring and the sixth cervical vertebra to prevent passive regurgitation. It must not be applied during active vomiting, which could provoke an oesophageal tear. Choking Asphyxia due to impaction of food or other foreign body in the upper airway is a dramatic and frightening event. In the conscious patient back blows and thoracic thrusts (the modified Heimlich manoeuvre) have been widely recommended. If respiratory obstruction persists, the patient will become unconscious and collapse. The supine patient may be given further thoracic thrusts, and manual attempts at pharyngeal disimpaction should be undertaken. Visual inspection of the throat with a laryngoscope and the use of Abdominal thrust Magill forceps or suction is desirable. Suction Equipment for suction clearance of the oropharynx is essential for the provision of comprehensive life support. When choosing one of the many devices available, considerations of cost, portability, and power supply are paramount. Devices If attempts at relieving choking are powered by electricity or compressed gas risk exhaustion of the unsuccessful, the final hypoxic event may be power supply at a critical time; battery operated devices require indistinguishable from other types of cardiac regular recharging or battery replacement. Treatment should follow the ABC operated pumps are particularly suitable for field use and suit (airway, breathing, and circulation) routine, the occasional user. Ease of cleaning and reassembly are although ventilation may be difficult or impossible to perform. A rigid, wide compression may clear the offending object bore metal or plastic suction cannula can be supplemented by from the laryngopharynx the use of soft plastic suction catheters when necessary. A suction booster that traps fluid debris in a reservoir close to the patient may improve the suction capability. Surgical intervention: needle and surgical cricothyrotomy In situations in which the vocal cords remain obstructed—for example, by a foreign body, maxillofacial trauma, extrinsic pressure, or inflammation—and the patient can neither self-ventilate nor be ventilated using the airway adjuncts discussed below, urgent recourse to needle jet ventilation or surgical cricothyrotomy, or both, should be considered. Narrow-bore oxygen tubing connected to a wall or cylinder flowmeter supplying oxygen up to 4 bar/60p. A hole 27 ABC of Resuscitation cut in the oxygen tubing enables finger tip control of ventilation. Minimise barotrauma or pneumothorax by maintaining a one second:four second inflation to exhalation cycle to allow adequate time for expiration. A second open transcricoid needle or cannula may facilitate expiration but spontaneous ventilation by this route will be inadequate and strenuous inspiratory efforts will rapidly induce pulmonary oedema. Beware of jet needle displacement resulting in obstruction, gastric distension, pharyngeal or mediastinal perforation, and surgical emphysema. Jet ventilation can maintain reasonable oxygenation for up Hand operated to 45 minutes despite rising CO levels until a cricothrotomy or pump 2 definitive tracheostomy can be performed. If needle jet ventilation is unavailable or is ineffective, cricothyrotomy may be life saving and should not be unduly delayed. In the absence of surgical instruments any strong knife, scissors point, large bore cannula, or similar instrument can be used to create an opening through the cricothyroid membrane. An opening of 5-7mm diameter is made and needs to be maintained with an appropriate hollow tube or airway. Tracheostomy is time consuming and difficult to perform well in emergency situations. It is best undertaken as a formal surgical procedure under optimum conditions. Jet ventilation is preferred to cricothyrotomy when the patient is less than 12 years of age.
We see many more women who turn out not have breast cancer but are understandably terrified by the appearance of a lump or other breast symptoms 50mg zoloft mastercard bipolar depression symptoms in women. Trials of mammography—X-ray examination of the breast— for early detection of malignancy were carried out in the USA in the 1960s buy cheap zoloft 100mg line anxiety worksheets for adults. Early results showed a resulting reduction in mortality among women over the age of fifty, but no benefit in younger women (Wells 1998). More extensive research in the 1970s confirmed the earlier results and mammography became established as a screening test for breast cancer. In Britain a national screening programme became operational in 1988; now women between the ages of 50 and 64 are invited for free mammography every three years. The combination of mammography with ultrasound and the microscopic study of cells extracted from a suspicious lump through ‘fine needle aspiration’ has greatly improved the diagnostic sensitivity of this process in the 1990s. In response, Professor Michael Baum, who had helped to set up the screening service, pointed out that though the mammography programme could not be expected to have an effect on mortality before 1997, the decline in the death rate began in 1985. Suggesting that a more likely explanation was the introduction of the drug Tamoxifen for the treatment of breast cancer, he argued that ‘to claim that any part of this 11 per cent fall is attributable to the screening programme is intellectually dishonest’ (Baum 1995). In protest, he resigned from the Department of Health’s breast cancer screening advisory group. Baum also pointed to the high level of false positive results generated by mammography, causing anxiety and leading to further investigations, either aspiration cytology or excision biopsy. He concluded that mammography was ‘not worth doing’ because it saved too few lives at too high a cost, while causing needless anxiety among thousands of healthy women by incorrectly suggesting that they have the disease (Rogers 1995). He suggested that the money spent on screening might be better spent on research and specialist treatment for women diagnosed with breast cancer. But breast cancer screening had acquired high political prestige; only three months earlier a parliamentary select committee had commended the mammography programme as a model of excellence in preventive health care and had called for it to be extended to cover women up to the age of 69. A study by a team from Denmark reviewed major trials of mammography in Sweden, Scotland, Canada and the USA, involving 500,000 women, and concluded that there was ‘no reliable evidence that screening decreases breast cancer mortality’ (Gotzsche, Olsen 2000). Prominent representatives of the government screening programme and the leading cancer charities immediately rejected this conclusion and asserted their conviction that mammography saved lives. Delyth Morgan, chief executive of Breakthrough Breast Cancer, insisted that ‘we must not be deterred from continuing our screening programmes until we have seen categorically that they are ineffective’ (Guardian, 7 January 2000). This ethical imperative to prove a negative stood in dramatic contrast to the one imposed twenty years earlier in what has become recognised as a classic paper (Cochrane, Holland 1971). These 60 SCREENING authors distinguished between ‘everyday medical practice’, in which a patient asks for help and the doctor ‘does the best he can’, and the ‘very different position’ when the doctor ‘initiates screening procedures’. In this situation, the doctor should ‘have conclusive evidence that screening can alter the natural history of disease in a significant proportion of those screened’. By the turn of the millennium the science and ethics of screening were subordinated in the mammography programme to a combination of the government’s need to maintain a high profile of concern for both health and women’s issues, medical vested interests, the demands of the powerful cancer charities—and women’s anxieties. Public anxieties about breast cancer were encouraged by the official campaign to raise ‘breast awareness’. October 1996 was designated Breast Cancer Awareness Month and, following the style set by the adoption of a red ribbon by Aids activists, a pink ribbon became a badge of breast awareness. One of the main effects of the promotion of breast cancer awareness is that it generates an exaggerated sense of risk. The Cancer Research Campaign promoted the estimate that ‘1 in 12’ women will develop breast cancer, which featured on a nationwide poster campaign. According to an authoritative review, this was ‘correct only for women who have escaped a number of equally serious but more likely threats to life at an earlier age’ (Bunker et al. The authors concluded that ‘for most women, the lifetime risk of dying of breast cancer is only 1 in 26; the other 25 will die of something else’. Most of the women who come into the surgery worried about breast lumps are young, that is, under 50—though the vast majority of deaths from breast cancer are in women over 65. Only one woman in 136 in Britain dies of breast cancer before the age of 50. Though the risk of dying from breast cancer increases with age, it appears to progress more slowly in older women, so that they often live long enough to die from some other cause. One of the ironies of discussing the risks of breast cancer is that, if the woman smokes, she has a greater risk of dying from lung cancer; even if she is a non- smoker, she is far more likely to die of heart disease. Public awareness of breast cancer has intensified the demand for screening tests which promise early diagnosis. The most basic is the technique of breast self-examination, which is generally recognised to be much more effective in generating anxiety than it is at detecting tumours (Austoker 1994a). Women’s magazines and health promotion leaflets are still offering detailed diagrams and earnest advice about 61 SCREENING how to detect lumps—resulting in a steady flow of frightened women, some scarcely out of their teens, who are more likely to win the national lottery than to have breast cancer. Another consequence of greater breast cancer awareness is the demand to extend mammography to women in their 40s. According to one commentator, this has provoked a debate in the USA ‘out of proportion to its potential impact on public health’ (Wells 1998). Despite the fact that numerous trials have failed to confirm the efficacy of this technique in younger women—and despite concerns that the radiation exposure involved might do greater harm— political pressures resulting from disease awareness campaigns have resulted in younger women having mammograms. Women who have had breast cancer are perhaps the greatest casualties of breast awareness.
It is currently believed to be an autoimmune disease zoloft 25 mg sale vegetative symptoms depression definition, based both on the pathology that has been elucidated and response to therapy purchase 50mg zoloft with amex anxiety vs fear. ETIOLOGY The original pathological description of perivascular round cell inﬁltration, micro- glial nodules, astrocytosis, and spongy degeneration suggested a viral ‘‘footprint,’’ and although recent infectious illness was seen in about half of the original patients, determined efforts to isolate viruses or their DNA=RNA have been unsuccessful. The tissue from affected patients has not been able to infect other animals or cell cultures and electron microscopy has not identiﬁed viruses. More recent attempts using polymerase chain reaction (PCR) have demonstrated a wide array of ﬁndings, but no consistent picture, with CMV, HSV1, and EBV variably implicated. Rogers and col- leagues reported elevated levels of antibodies to a glutamate receptor (GluR3). They, and others, hypothesized that these antibodies could be highly neurotoxic. This led to a very complex hypothesis concerning the unihemispheric nature of RS. They pro- posed that there was a focal disruption of the blood–brain barrier that permitted GluR3 antibodies to interact with the glutamate receptors. Theorizing that if these antibodies could be eliminated, patients would improve, they treated a number of patients with plasmapheresis. The initial patient, and many others, responded initi- ally to this therapy with a decrease in seizures and improved function. However, over time repeated pheresis did not maintain this improvement and children deteriorated. This theory evokes an extensive lymphocytic inﬁltration by CD8 killer T cells. There is an extensive astroglial reaction, microglial activation, and cytolysis. CLINICAL ASPECTS Although RS is considered a disorder of childhood and one that affects only a single hemisphere, there have been reported instances of Rasmussen-like conditions that have begun in adulthood or that have involved both hemispheres. Classically, sei- zures begin in the early school years, with a range of onset from the second year of life to mid-teens. The initial seizure can be partial, generalized, or even an episode of status epilepticus. Seizures then typically evolve over time to produce a multifocal or unilateral condition of epilepsia partialis continua that is seen in slightly more than half of individuals with RS. The progression of a seizure is quite different from the well-understood Jacksonian march. Instead, one sees the clinical manifestations of separated areas of cortex ﬁring independently. One can see the foot jerk, then the shoulder, then the thigh, then the hand, and then the face, with no contiguous march along the homunculus. It can almost be visualized as a popcorn effect: suddenly a seizure pops from one area, then another. This is also not like polymyoclonus, because the clonic activity can remain active in one area, but be rhythmically clonic at a different frequency in another area of the body. Another, somewhat less common presentation involves the basal ganglia and one can see expressions of dystonia and choreoathetosis in the setting of RS as well. Invariably, the process continues, resulting in hemiplegia or hemiparesis, homonymous hemianopia and functional deterioration. Neuroimaging has shown considerable utility because over time some degree of atrophy becomes appar- ent. Recent work has suggested that one can assess a hemispheric ratio from MRI studies to determine the degree and rate of atrophy of the hemisphere, with some evi- dence that most of the atrophy occurs in the ﬁrst year of the disease. However, there is huge variability in RS and some individuals present with extensive atrophy at the time of their ﬁrst seizure while others display a much slower course of progression. Other newer modalities may be useful, including magnetic resonance spectroscopy (MRS) in which N-acetyl-aspartic acid (NAA), a marker of neuronal death or injury, has been shown to be decreased beyond what would be expected based simply on atrophy. Other modalities such as diffusion-weighted imaging may also be helpful in the future. At best, it would show slowing over the affected hemisphere with multifocal spikes. At worst, because it can create doubt of the diagnosis, seemingly independent discharges can be seen bilaterally. With careful analysis, large asymmetries are usually apparent, and the spike from the truly abnormal hemisphere can often be seen to be leading the contralateral spike by milliseconds. We do not believe it is useful because we are aware of the pathology that can show normal tissue intimately adjacent to inﬂamed tissue. Even with use of MRI-guided biopsy we know that the biopsy can still be negative, sometimes interfering with the appropriate management of the condition. Rasmussen’s Syndrome 123 Unfortunately, this was never available on a standardized basis and the literature is clear that the test can be positive in some control individuals and negative in some with proved RS. At this time, the diagnosis remains clinical: unilateral progressive epilepsy in the setting of atrophying brain. Aggressive medical management with anticonvulsant medication is uniformly unsuccessful.
The interval Continuous ECG recording showing VF successfully treated by a countershock between batches of shocks should not exceed one minute discount 25mg zoloft with mastercard mood disorder nos 2969, even if the airway has not been secured or intravenous access obtained buy zoloft 50mg online mood disorder lecture, because the best chance of successful resuscitation still rests with defibrillation. The loop on the left-hand side of the algorithm is continued with each sequence of three shocks (assuming successful defibrillation does not occur), which is followed by one minute of CPR. Further attempts to secure the airway or gain intravenous access may be attempted if necessary. Adrenaline (epinephrine) should be given with each loop or about every three minutes. The use of alkalising or buffering agents has achieved less prominence in resuscitation guidelines in recent years. The use Defibrillation—points to note of bicarbonate may be considered if the arterial pH is less than ● The number of “loops” completed during any particular 7. Nothing is gained, however, by delaying or drug overdose further shocks because defibrillation remains the only intervention capable of restoring a spontaneous circulation. The algorithms are not intended to preclude the use of agents such as calcium, magnesium, or potassium salts whether for the treatment of known deficiencies in a particular patient, on clinical suspicion (for example, magnesium deficiency in patients on long-term diuretics), or on an empirical basis. Epidemiology of ventricular fibrillation ● 70 000 deaths per annum in the United Kingdom are sudden cardiac deaths Safety ● Most sudden deaths are due to coronary disease ● Most coronary deaths occur outside hospital Care is needed to ensure that use of the defibrillator does not ● 50% of those who die of acute myocardial infarction do so pose a risk to any of the staff participating in the resuscitation within an hour of the onset attempt. When defibrillation is carried out, it is essential that ● VF rhythm at onset in 85-90% of patients no part of any member of the team is in direct contact with the patient. The operator must shout “stand clear” and check that all those present have done so before giving the shock. There are traps for the unwary: wet surroundings or clothing are dangerous; intravenous infusion equipment must not be held 10 Ventricular fibrillation by assistants; the operator must be certain not to touch any part of the electrode surface; care is needed to ensure that excess electrode gel does not allow an electrical arc to form across the surface of the chest wall; and care is needed to ensure that the electrode gel does not spread from the chest wall to the operator’s hands. The use of gel defibrillator pads reduces the last two risks considerably. If the patient has a glyceryl trinitrate patch fitted then this should be removed before attempting defibrillation because an apparent explosion may occur if current is conducted through the foil backing used in some preparations. Further reading ● Cummins RO, Hazinski MF, Kerber RE, Kudenchuk P, Becker L, ● Pantridge JF, Geddes JS. Low-energy biphasic waveform defibrillation: the management of myocardial infarction. Improving ● Robertson C, Pre-cordial thump and cough techniques in survival from sudden cardiac arrest: the “chain of survival” advanced life support. Life Support Subcommittee and the Emergency Cardiac Care In Cardiopulmonary resuscitation. European Resuscitation Council Guidelines 2000 for adult J Am Coll Cardiol 1986;7:752-7. Resuscitation 2000;46:109-13 (Defibrillation), 167-8 (The algorithm approach to ACLS emergencies), 169-84 (A guide to the international ACLS algorithms). In this chapter we describe the automated external defibrillator (AED), which is generally considered to be the most important development in defibrillator technology in recent years. Development of the AED AED development came about through the recognition that, in adults, the commonest primary arrhythmia at the onset of cardiac arrest is ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT). Survival is crucially dependent on minimising the delay before providing definitive therapy with a countershock. Use of a manual defibrillator requires considerable training, particularly in the skills of electrocardiogram (ECG) interpretation, and this greatly Modern AED restricts the availability of prompt electrical treatment for these life-threatening arrhythmias. In many cases conventional emergency medical systems cannot respond rapidly enough to provide defibrillation within the accepted time frame of eight minutes or less. This has led to an investigation into ways of automating the process of defibrillation so that defibrillators might be used by more people and, therefore, be more widely deployed in the community. The International 2000 guidelines for cardiopulmonary resuscitation (CPR) and Principles of automated emergency cardiac care recommend that defibrillation healthcare workers with a duty to perform CPR should be trained, equipped, and When using an AED many of the stages in performing authorised to perform defibrillation defibrillation are automated. All that is required of the Public access defibrillation should be operator is to recognise that cardiac arrest may have occurred established: ● When the frequency of cardiac arrest is and to attach two adhesive electrodes to the patient’s chest. The AED within five years process of ECG interpretation is undertaken automatically and ● When a paramedic response time of less if the sophisticated electronic algorithm in the device detects than five minutes cannot be achieved VF (or certain types of VT) the machine charges itself ● When the AED can be delivered to the automatically to a predetermined level. Some models also patient within five minutes display the ECG rhythm on a monitor screen. When fully charged, the device indicates to the operator that a shock should be given. Full instructions are provided by Ventricular fibrillation 12 The automated external defibrillator voice prompts and written instructions on a screen. Some models feature a simple 1-2-3 numerical scheme to indicate the next procedure required, and most illuminate the control that administers the shock. After the shock has been delivered, the AED will analyse the ECG again and if VF persists the process is repeated up to a maximum of three times in any one cycle. AEDs are programmed to deliver shocks in groups of three in accordance with current guidelines. If the third shock is unsuccessful the machine will then indicate that CPR should be performed for a period (usually one minute) after which the device will instruct rescuers to stand clear while it reanalyses the rhythm. If the arrhythmia persists, the machine will charge itself and indicate that a further shock is required.
X It is possible to use a mixture of sampling techniques within one project which may help to overcome some of the disadvantages found within diﬀerent procedures zoloft 100 mg for sale mood disorder lamps. This is a document which sets out your ideas in an easily accessible way buy zoloft 50 mg fast delivery depression lethargy. Even if you have not been asked speciﬁcally to produce a research proposal by your boss or tutor, it is a good idea to do so, as it helps you to focus your ideas and provides a useful document for you to reference, should your research wander oﬀ track a little. Before you start work on your research proposal, ﬁnd out whether you’re required to produce the document in a speciﬁc format. For college and university students, you might be given a general outline and a guide as to how many pages to produce. For those of you who are produ- cingaproposaltosendtoafundingorganisationyou might have to produce something much more speciﬁc. Some provide advice and guidance about what they would like to see in your proposal. The larger funding bodies produce their proposal forms on-line so that they can be ﬁlled in and sent electronically, which makes the process a lot quicker and easier. This rationale should be placed within the con- text of existing research or within your own experience and/or observation. You need to demonstrate that you know what you’re talking about and that you have knowl- edge of the literature surrounding this topic. If you’re un- able to ﬁnd any other research which deals speciﬁcally with your proposed project, you need to say so, illustrat- ing how your proposed research will ﬁll this gap. If there is other work which has covered this area, you need to show how your work will build on and add to the existing knowledge. Basically, you have to convince people that you know what you’re talking about and that the research is important. Aims and objectives Many research proposal formats will ask for only one or two aims and may not require objectives. However, for some research these will need to be broken down in more depth to also include the objectives (see Example 6). The aim is the overall driving force of the research and the ob- jectives are the means by which you intend to achieve the aims. HOW TO PREPARE A RESEARCH PROPOSAL / 57 EXAMPLE 6: AIMS AND OBJECTIVES Aim To identify, describe and produce an analysis of the interact- ing factors which inﬂuence the learning choices of adult re- turners, and to develop associated theory. The nature, extent and eﬀect of psychological inﬂuences on choices, including a desire to achieve personal goals or meet individual needs. The nature, extent and eﬀect of sociological inﬂuences on choices, including background, personal and social expecta- tions, previous educational experience and social role. The nature and inﬂuence of individual perceptions of courses, institutions and subject, and how these relate to self-perception and concept of self. The inﬂuence on choice of a number of variables such as age, gender, ethnicity and social class. The role and possible inﬂuence of signiﬁcant others on choice, such as advice and guidance workers, peers, relatives and employers. The nature and extent of possible inﬂuences on choice of available provision, institutional advertising and marketing. The nature and extent of possible inﬂuences on choice of mode of study, teaching methods and type of course. How and to what extent inﬂuencing factors change as adults re-enter and progress through their chosen route. In this section you need to describe your proposed research methodology and methods and justify their use. This section needs to include details about samples, numbers of people to be contacted, method of data collection, methods of data analysis and ethical con- siderations. If you have chosen a less well known metho- dology, you may need to spend more time justifying your choice than you would need to if you had chosen a more traditional methodology. This section should be quite de- tailed – many funding organisations ﬁnd that the most common reason for proposal failure is the lack of metho- dological detail. T|me ta ble A detailed timetable scheduling all aspects of the research should be produced. This will include time taken to con- duct background research, questionnaire or interview schedule development, data collection, data analysis and report writing (see Table 5). Allow for this and add a few extra weeks on to each section of your timetable. If you ﬁnish earlier than you anticipated, that’s ﬁne as you have more time to spend on your report. However, ﬁnishing late can create problems especially if you have to meet deadlines. HOW TO PREPARE A RESEARCH PROPOSAL / 59 TABLE 5: SURVEY TIMETABLE DATE ACTION 5 January – 5 February Literature search Primary research (talk to relevant people) 6 February – 7 March Develop and pilot questionnaire Continue literature search 8March–9April Analyse pilot work and revise questionnaire Ask relevant people for comments 10 April – 21 April Send out questionnaire Categorise returned questionnaires 21April–1May Send out reminder letter for non- responses. You need to do this so that you apply for the right amount of money and are not left out of pocket if you have under-budgeted. Funding bodies also need to know that you have not over-budgeted and expect more money than you’re going to use.
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