By K. Rhobar. Golden State Baptist College.
Internal valid- ity is threatened by problems in the way a study is designed or carried out buy paxil 20mg amex medicine glossary, or with the instruments used to make the measurements discount 40 mg paxil amex medicine pictures. External validity exists when the measurement can be generalized and the results extrapolated to other clinical situations or populations. External validity is threatened when the pop- ulation studied is too restrictive and you cannot apply the results to another and usually larger, population. The results of an internally valid study are true if there is no serious source of bias that can Instruments and measurements: precision and validity 75 produce a fatal ﬂaw and invalidate the study. Truth in the universe relating to all other patients with this problem is only present if the study is externally valid. Improving precision and accuracy In the process of designing a study, the researcher should maximize precision, accuracy, and validity. The methods section detailing the protocol used in the study should enable the reader to determine if enough safeguards have been taken to ensure a valid study. The protocol should be explicit and given in enough detail to be reproduced easily by anyone reading the study. There are four possible error patterns that can occur in the process of measur- ing data. Using exactly reproducible and objective measurements, standardizing the performance of the measurements and intensively training the observers will increase precision. Automated instruments can give more reliable measure- ments, assuming that they are regularly calibrated. The number of trained observers should be kept to a minimum to increase precision, since having more observers increases the likelihood that one will make a serious error. For example, tak- ing a blood pressure is obtrusive while simply observing a patient for an out- come like death or living is usually non-obtrusive. Watching someone work and recording his or her efﬁciency is obtrusive since it could result in a change in behavior, called the Hawthorne effect. If the observer is unaware of the group to which the patient is assigned, there is less risk that the measurement will be 76 Essential Evidence-Based Medicine biased. Blinding creates the climate for consistency and fairness in the measure- ments, and results in reduced systematic error. Non-blinded measurements can lead to differential treatment being given to one of the groups being studied. In single blind- ing, either the researcher or the patient doesn’t know who is in each group. In double blinding, neither the researchers nor subject knows who is in each group. Triple blinding occurs if the patient, person treating the patient, and the researcher measuring the outcome are all blind to the treatment being rendered.
Currently the need for and monitoring of patients on thyroxine is done using blood tests cheap paxil 10mg fast delivery symptoms 2015 flu. In an austere situation the diagnosis would have to be made purely on clinical grounds which may be difficult generic paxil 20 mg without a prescription symptoms 16 weeks pregnant. However, for those already diagnosed and on Thyroxine it is possible to treat them with sheep thyroid glands – several times per week – using resting basal body temperature as the baseline for treatment. Taking the temperature first thing in the morning before getting out of bed will show the subtle falls and rises in temperature associated with too much or to little thyroxine providing an indication of when to give and when to withhold the sheep gland. Again, this system is not perfect but it provides a possible solution for someone chronically taking Thyroxine. As can be seen from the above examples relatively complex drug production is possible in austere conditions. However, nothing is ever easy – other chemicals are required for the process which may be just as difficult to obtain or manufacture, and certain items of laboratory equipment may be needed that are hard to improvise but it is possible. None of the above reactions are any more complicated or sophisticated than the manufacture of methamphetamine and amateur chemists in big cities and rural areas all over the world are cooking this! The above medications can be th manufactured with 16th or 17 Century levels of technology with relative ease, and th simply with 18 Century levels – it will all depend on how far back we descend. Plants In a sustained long-term disaster medications derived from plants and the limited range which can be easily synthesised will essentially be the only medications - 104 - Survival and Austere Medicine: An Introduction available. Traditionally plants have been our main source of medicines and in the event of a long-term event they will be so once again. It is important to be aware of which plant-based medications have clearly proven clinical efficacy and which only have anecdotal effectiveness. It is a current problem with botanical medicine that only a minority of therapies have proven benefit. That is not to say that many more are not very effective but only that there is no evidence for their use aside from anecdotes and case reports, but in a long term situation using plant-based medications with limited evidence (combined with a placebo effect) may be the only option. You will need to adopt the old traditional approach of trial and error in determining effectiveness and dose. Surgery Surgery has evolved to where it is today due to two fundamental discoveries – first the ability to give an anaesthetic and secondly the ability to sterilise and disinfect instruments and make the part of the body we are operating on as clean/sterile as possible. Obviously there have been thousands of other advances but these two alone are responsible for the other advances being able to occur. With an understanding of antisepsis and the ability to give an anaesthetic (such as ether or chloroform – discussed above) then it is likely a reasonable number of basic surgical procedures could be possible. Such as limb surgery – amputations, washing out wounds and compound fractures, setting fractures; abdominal surgery – appendicectomy, caesarean section, very simple bowel repair in penetrating injuries and abdominal washouts; and a number of other “minor” major operations. It is also important to realise that lay people with a basic medical knowledge and access to a good book are more than capable of performing many surgical operations. This has to be tempered with the first rule of medicine: “First do no harm”, whatever you do you shouldn’t make the situation worse. In terms of wounds and contamination - “The key to pollution is dilution” – for any wound or incision copious irrigation with sterile normal saline or sterile water if saline is unavailable will greatly reduce the incidence of infection.
Of ten gynecological texts composed in Middle English between the fourteenth and ﬁfteenth centuries cheap 10mg paxil visa symptoms weight loss, for example discount 40 mg paxil free shipping symptoms insulin resistance, ﬁve are renditions of the Trotula. The Latin texts probably only rarely made their way into women’s hands in the early years after their composition, perhaps not at all after the thirteenth century. The Laon manuscript just mentioned, for example, passed from that anonymous male surgeon into the holdings of the cathedral of Laon, where it was annotated and used by the canons of the cathedral for the rest of the Middle Ages. Every other manuscript whose provenance is known is similarly found passing exclusively through the hands of men. Its early provenance is not known, but it has the distinction among the Latin Trotula manuscripts in being the smallest codex, a handbook less than six by four inches in size. It also contains only one other text: a brief tract on useful and harmful foods, which could, conceivably, be used for self-medication by controlling diet. There are no contemporary annotations to conﬁrm owner- ship by a woman, but its small size (similar to that of the books of hours owned by many upper-class women in this period) and the absence of any other, more technical medical literature may suggest use by a layperson and so, perhaps, by a woman. The author of the earliest English translation, writ- ing in the late fourteenth or early ﬁfteenth century, went so far as to demand of any male reader who happened upon the text that ‘‘he read it not in spite nor [in order to] slander any woman nor for any reason but for healing and helping them. It seems, then, that relative to their widespread popularity among male practitioners and intellectuals, it was only very infrequently that the Trotula found their way into the hands of women. Despite the recognition by the author of Conditions of Women that women often did not want to turn to male physicians, the Trotula seem to have functioned as a prime tool by which male practitioners did, in fact, come to have signiﬁcant control over the practice of gynecology and cosmetics. Note on This Edition and Translation T E The following edition of the Trotula ensemble represents the standardized text as it circulated in the latter half of the thirteenth century through the turn of the fourteenth century. The nine manuscripts collated here were chosen on the basis of their early date and the integrity of their text. The text, including orthography, reﬂects that of the Basel manuscript, including the hand of the original scribe (B), that scribe’s own corrections (B1), and the corrections of a second, slightly later hand (B2). I have deviated from B’s text only in those cases where the orthography seemed misleading, or where the unanimous agreement of the other manuscripts suggested a lacuna or an error in B. Where B’s reading is unique but not necessarily erroneous, however, I have retained it despite the unanimity of the other manuscripts. All variants are noted in the apparatus with the following two exceptions: varia- tions in word order and orthography, except in those cases where they seemed potentially meaningful, and the presence orabsence of et except, again, in those cases where it might be important to the sense. Corrections or expunctions in the hand of the original scribes have not been specially ﬂagged; the text has simply been read as corrected. It is meant not only to indicate the obvi- ous grammatical and topical breaks (and in this I have respected the manu- scripts’ readings as much as possible) but also to reﬂect the original compo- nent parts of the texts.
Building dialogue into the clinical diagnostic process cheap paxil 20 mg online treatment head lice, Should I generic paxil 20mg overnight delivery treatment lower back pain, as the physician of each of the actual patients whereby the patient tells the practitioner how he/she is cited above, have “taken a better history” and uncovered doing, represents an important premise. Each level, doing so demonstrates a degree of caring that extends emerged only through subsequent follow-up. It have asked more detailed probing questions during my ﬁrst is impossible to exaggerate the amazement and appreciation encounter with the patient? Shouldn’t I have asked fol- of my patients when I call to ask how they are doing a day low-up questions during the initial encounter that more or a week after an appointment to follow up on a clinical actively explored my differential diagnosis based on (what problem (as opposed to them calling me to complain that ideally should be) my extensive knowledge of various dis- they are not improving! The old tools—ad hoc Carefully reﬁned signals from downstream feedback repre- fortuitous feedback, individual idiosyncratic systems to track sent an important antidote to a well-known cognitive bias, patients, reliance on human memory, and patient adherence to anchoring, i. For experience, an uphill battle at best, lack the power to provide example, upon learning that a patient with a headache that the intelligence needed to inform learning organizations. What was initially dismissed as benign was found to have a brain is needed instead is a systematic approach, one that fully tumor, the physician works up all subsequent headache involves patients and possesses an infrastructure this is hard patients with imaging studies, even those with trivial histo- wired to capture and learn from patient outcomes. Thus, potentially useful feedback on the patient with a than such a linking of disease natural history to learning orga- missed brain tumor is given undue weight, thereby biasing nizations poised to hear and learn from patient experiences and future decisions and failing to properly account for the rarity physician practices will sufﬁce. Edwards Deming came Division of General Medicine into a factory, one of the ﬁrst ways he improved quality was Brigham and Women’s Hospital to stop the well-intentioned workers from “tampering,” i. As he dramatically showed with his classic funnel the sponsor of this supplement article or products discussed experiment, in which subjects dropped marbles through a in this article: funnel over a bull’s-eye target, the more the subject at- Gordon D. By overreacting to this random variation each time the target was missed, the subjects 1. Diagnosing diagnostic errors: If each time a physician’s discovery that his/her diagnos- lessons from a multi-institutional collaborative project. Overconﬁdence as a cause of diagnostic error in diagnosis, he/she vowed never to order so many tests, our medicine. Learning from malpractice claims about negligent, adverse events in diagnostic decision making is perhaps doing more harm primary care in the United States. It suggests a critical need to noses in the ambulatory setting: a study of closed malpractice claims. Judgment under uncertainty: heuristics and emperor’s clothes provide illusory court comfort. The pull system mystery explained: drum, buffer and Presented at: Annual Meeting of the Healthcare Management Di- rope with a computer. From the historical perspective, there is substan- many of these strategies show potential, the pathway to ac- tial good news: medical diagnosis is more accurate and complish their goals is not clear. Advances in the medical sciences enable has been done while in others the results are mixed. Innovation in have easy ways to track diagnostic errors; no organizations are the imaging and laboratory sciences provides reliable new ready or interested to compile the data even if we did.
This is probably the minimum standard to aim for – it provides an overview of anatomy and physiology cheap 20mg paxil overnight delivery medications during pregnancy chart, and an introduction to the basics of looking after sick and injured patients cheap paxil 10mg online symptoms 9dpo bfp. It is based around delivering the patient to a hospital as an end result so is of limited value in remote and austere medicine – but it provides a solid introduction. Covering similar material in much less detail it is a good start but not overly in-depth. The usual course length is 40-80 hours – most quality schools offer a 60+ hour course. Various community education groups offer the course and the Red Cross also offers a variation. These courses give a basic background in anatomy and physiology, medical terminology, and the essentials of emergency medicine. Another highly recommended course is the Operational and Emergency Medical Skills course. This course is unfortunately only available to medical staff attached to the Department of Defence and other federal agencies. Some other providers of these types of courses include: Insight training http://www. These courses are unique in catering specifically for survival situations and are highly endorsed. There are probably a number of other more advanced courses available but we have had difficulty obtaining information on them. They offer the basic Immediate Care course and the more advanced Pre-hospital Emergency Care course. They are also affiliated with the Faculty of Pre-Hospital of the Royal College of Surgeons of Edinburgh. Basic surgical skills for remote medics: An intensive three-day course aimed at teaching the basics of surgical practise and to challenge the students with different problems using their newfound skills. Not delivered at a particularly advanced level, but goes well beyond a standard first aid course and is focused on remote work. Many Emergency Departments regularly have a variety of people coming through for practical experience from army medics, to off-shore, island, forest service staff, to fishing boat medics. However, if you are not actually going to touch a patient and are just going to be there to observe then if you ask the right people it should be easy to arrange. While not the same as “hands on” experience, simply experiencing the sights and sounds of illness and injury will help prepare you for if you have to do it yourself. Arrange some teaching: Another option is befriending (or recruiting) a health care professional and arranging classes through them. It is common for doctors to be asked to talk to various groups on different topics so an invitation to talk to a "tramping club" about pain relief or treating a fracture in the bush would not be seen as unusual.
In patients with elevated lactate levels targeting resuscitation to normalize lactate (grade 2C) generic 20 mg paxil medicine 512. Routine screening of potentially infected seriously ill patients for severe sepsis to allow earlier implementation of therapy (grade 1C) safe 40 mg paxil symptoms tuberculosis. Cultures as clinically appropriate before antimicrobial therapy if no signifcant delay (> 45 mins) in the start of antimicrobial(s) (grade 1C). At least 2 sets of blood cultures (both aerobic and anaerobic bottles) be obtained before antimicrobial therapy with at least 1 drawn percutaneously and 1 drawn through each vascular access device, unless the device was recently (<48 hrs) inserted (grade 1C). Use of the 1,3 beta-D-glucan assay (grade 2B), mannan and anti-mannan antibody assays (2C), if available and invasive candidiasis is in differential diagnosis of cause of infection. Administration of effective intravenous antimicrobials within the frst hour of recognition of septic shock (grade 1B) and severe sepsis without septic shock (grade 1C) as the goal of therapy. Initial empiric anti-infective therapy of one or more drugs that have activity against all likely pathogens (bacterial and/or fungal or viral) and that penetrate in adequate concentrations into tissues presumed to be the source of sepsis (grade 1B). Antimicrobial regimen should be reassessed daily for potential deescalation (grade 1B). Use of low procalcitonin levels or similar biomarkers to assist the clinician in the discontinuation of empiric antibiotics in patients who initially appeared septic, but have no subsequent evidence of infection (grade 2C). Combination empirical therapy for neutropenic patients with severe sepsis (grade 2B) and for patients with diffcult-to-treat, multidrug- resistant bacterial pathogens such as Acinetobacter and Pseudomonas spp. For patients with severe infections associated with respiratory failure and septic shock, combination therapy with an extended spectrum beta-lactam and either an aminoglycoside or a fuoroquinolone is for P. A combination of beta-lactam and macrolide for patients with septic shock from bacteremic Streptococcus pneumoniae infections (grade 2B). De-escalation to the most appropriate single therapy should be performed as soon as the susceptibility profle is known (grade 2B). Duration of therapy typically 7–10 days; longer courses may be appropriate in patients who have a slow clinical response, undrainable foci of infection, bacteremia with S. Antiviral therapy initiated as early as possible in patients with severe sepsis or septic shock of viral origin (grade 2C). A specifc anatomical diagnosis of infection requiring consideration for emergent source control be sought and diagnosed or excluded as rapidly as possible, and intervention be undertaken for source control within the frst 12 hr after the diagnosis is made, if feasible (grade 1C). When infected peripancreatic necrosis is identifed as a potential source of infection, defnitive intervention is best delayed until adequate demarcation of viable and nonviable tissues has occurred (grade 2B). Selective oral decontamination and selective digestive decontamination should be introduced and investigated as a method to reduce the incidence of ventilator-associated pneumonia; This infection control measure can then be instituted in health care settings and regions where this methodology is found to be effective (grade 2B). Similar consideration may be measurement of fow at the bedside (33, 34); however, the eff- warranted in circumstances of increased abdominal pressure cacy of these monitoring techniques to infuence clinical out- (17).