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This is providing supporting information; it is not a public exami- nation (see false feedback loop) discount 100mg extra super levitra visa. When you have calmed down discount 100mg extra super levitra, learn from what 111 THE A–Z OF MEDICAL WRITING you have done generic 100mg extra super levitra with amex. There is a good chance you will be able to get the work published elsewhere purchase 100 mg extra super levitra with visa. If you are writing for magazines and newspapers, you will rarely have the luxury of detailed feedback, so examine the rejection letter carefully. The editor may have given you a clear reason, such as having a similar story already in the pipeline, or a judgement that the topic has run its course. Was it for technical inadequacies (in which case you should be able to take remedial action) or was it because the editor had other articles that he thought were more suitable for the readership (in which case you need to think of an alternative customer)? It is always tempting to do this, but consider how much work you have already done, and how much you are learning from the expe- rience, painful though it may be. Another tempting option: all you have to do is write an eloquent letter showing the editor why the decision was wrong, and it will be immediately reversed. With academic publications, however, there is the chance of appeal in certain circumstances. If the editor says that publication of your paper is not a priority then, as with the editors of magazines and newspapers, you must respect that decision (see fairness). However, if you believe that your article has been turned down because the reviewer has made an error and given bad advice, then you should consider an appeal. Under no circumstances should you just blank out the name of the first editor and send it off to another. Find a new market and 112 REJECTION research it (see evidence-based writing). Look at your message: is it right for that market or do you need to adjust it slightly? It will probably take less time than you imagine, and will be more effective than just tinkering with the rejected version. Although most rejected articles are subse- quently published somewhere, occasionally you will write the article that no one will ever accept. The logical time to give up is when editors and reviewers continue to make the same objection – insuffi- cient numbers in the sample, for instance, or offensive to public taste – and you cannot (or will not) do anything about it. This is the time to hold a ceremonial burning – and get on with your life. While unpleasant at the time, they are good for the soul and better for the writing. And it does make that acceptance letter – when it comes – that much more worth while (see acceptance). Generally these will review a situation (or problem), analyse it, and then put some recommendations. This is a specialized type of writing; once you master the technique, you have a powerful tool. Some reports, sadly, are written only because someone has been told to write them; these are pointless. Are you writing to obtain an extra piece of equipment or new member of staff, or to change an existing policy? Are you writing to raise awareness of an issue, or to persuade people to take drastic action, like closing down a hospital? Whatever you decide, be clear in your mind how you will judge success (see effective writing). The more focused you are, the greater the chances of your report being successful (see marketing). Examples might include introduction, background/history, current situation/problem, discussion, recommendations. Look at the reports that have worked before for your audience, and follow the style of the 113 THE A–Z OF MEDICAL WRITING successful ones.
Accurate drug ad- pairment alters drug protein binding and increases blood ministration order extra super levitra 100mg with visa, close monitoring of blood coagulation tests best extra super levitra 100 mg, levels of metabolites purchase extra super levitra 100mg mastercard. Antiplatelet agents and warfarin are used for long-term pre- • Ticlopidine may be more likely to cause bleeding in vention or management of thromboembolism and are often clients with renal impairment because the plasma drug taken at home extra super levitra 100mg low cost. For prevention, antiplatelet agents and warfarin concentration is increased and elimination is slower. Dosage must be reduced INR, and notiﬁes the prescriber, who then prescribes the ap- by approximately 50%. The risk of bleeding has lessened in recent years because of lower doses of warfarin. In addition, bleed- Use in Hepatic Impairment ing during warfarin therapy may be caused by medical condi- tions other than anticoagulation. Little information is available about the use of most anticoag- Heparin may also be taken at home. Standard heparin may ulant, antiplatelet, and thrombolytic drugs in clients with im- be taken subcutaneously, but LMWHs for home management paired liver function. However, such drugs should be used very of venous thrombosis are becoming standard practice. Enoxa- cautiously because these clients may already be predisposed to parin is approved by the Food and Drug Administration for bleeding because of decreased hepatic synthesis of clotting fac- outpatient use. Additional considerations include the following: needed if the client or a family member is unable or unwill- • Warfarin is more likely to cause bleeding in clients with ing to inject the medication. Platelet counts should be done liver disease, because of decreased synthesis of vitamin K. Heparin In addition, warfarin is eliminated only by hepatic me- should be discontinued if the platelet count falls below tabolism and may accumulate with liver impairment. Clients and family members should be educated disease because of high risks of excessive bleeding. When anagrelide is given, blood tests when indicated, and taking safety precautions. In clients should be closely monitored for signs of hepa- addition, assess the environment for risk factors for injury. It should be used the drugs, assisting clients to obtain laboratory tests, and teach- cautiously. CHAPTER 57 DRUGS THAT AFFECT BLOOD COAGULATION 847 NURSING Drugs That Affect Blood Coagulation ACTIONS NURSING ACTIONS RATIONALE/EXPLANATION 1. With standard heparin: (1) When handwriting a heparin dose, write out units This is a safety precaution to avoid erroneous dosage. Underdosage may cause thromboembolism, and overdosage may cause bleeding. In addition, heparin is available in several con- centrations (1000, 2500, 5000, 10,000, 15,000, 20,000, and 40,000 units/mL). To minimize trauma and risk of bleeding (b) Leave a small air bubble in the syringe to follow Locks drug into subcutaneous space and minimizes trauma dose (c) Grasp a skinfold and inject the heparin into it, at a To give the drug in a deep subcutaneous or fat layer, with minimal 90-degree angle, without aspirating. Whatever effective method is to fill the volume-control set method is used, it is desirable to standardize concentration of (eg, Volutrol) with 100 mL of 5% dextrose in water heparin solutions within an institution. Standardization is safer, and add 5000 units of heparin to yield a concentration because it reduces risks of errors in dosage. For example, administration of 1000 units/h requires a flow rate of 20 mL/h. Another method is to add 25,000 units of heparin to 500 mL of IV solution. With low–molecular-weight heparins: (1) Give by deep SC injection, into an abdominal skin fold, To decrease bruising with the patient lying down, using the same technique as standard heparin. After the initial dose of warfarin, check the international The INR is measured daily until a maintenance dose is established, normalized ratio (INR) before giving a subsequent dose. Give ticlopidine with food or after meals; give cilostazol 30 min before or 2 h after morning and evening meals; give clopidogrel with or without food. With prophylactic heparins and warfarin, observe for the absence of signs and symptoms of thrombotic disorders. With therapeutic heparins and warfarin, observe for de- crease or improvement in signs and symptoms (eg, less edema and pain with deep vein thrombosis, less chest pain and respi- ratory difﬁculty with pulmonary embolism).
Code buy extra super levitra 100mg, the ﬁrst international effort to lay down In the second MRC trial generic 100 mg extra super levitra overnight delivery, the antihistamine 28 16 ethical principles of clinical research purchase 100 mg extra super levitra mastercard. Principle common cold study discount extra super levitra 100mg mastercard, placebos, indistinguishable 1 of the Nuremberg Code states: from the drug under test, were used. Here, Bradford Hill noted: The voluntary consent of the human subject is absolutely essential. If either were allowed free power of choice, without the intervention of to know the treatment that had been given, I believe any element of force, fraud, deceit, duress, over- that few of us would without qualms accept that reaching, or other ulterior form of constraint or the drug was of value–if such a result came out of coercion; and should have sufﬁcient knowledge and the trial. Hill,31 based on Following this, a data and safety monitoring com- his experience in a number of early randomised mittee was established for the Coronary Drug clinical trials sponsored by the Medical Research Project. Gradually the medical community came to warranted changing the study protocol or termi- recognise the need to protect the reputation and nating the study. Later, analyses affect the probability of the type I in 1964, the World Medical Assembly issued the 33 error, came with the publication in the 1950s Declaration of Helsinki essentially adopting the 37 of papers on sequential clinical trials by Bross ethical principles of the Nuremberg Code, with 38 and Armitage. The Declaration of Helsinki has been that when the length of time needed to reach an updated and amended several times: Tokyo, 1975; endpoint is short, e. In the 1970s and 1980s solutions to interim anal- ysis problems came about in the form of group se- DATA MONITORING 39–41 quential methods and stochastic curtailment. In the group sequential trial, the frequency of In the modern randomised clinical trial, the accu- interim analyses is usually limited to a small mulating data are usually monitored for safety number, say between three and six. The Pocock and efﬁcacy by an independent data monitoring boundaries42 use constant nominal signiﬁcance 8 TEXTBOOK OF CLINICAL TRIALS levels; the Haybittle–Peto boundary43,44 uses 4. Hoeber (1921) stringent signiﬁcance levels for all except the ﬁnal 45 27,163. Edinburgh: Sands gradually decreases; in the method by Lan and Murray Cochran (1753) 191–3. The applicability of statistics to the ually spent in a manner that does not require the practice of medicine. Studies in crop varia- Recent years have seen a huge increase in the tion: II. The manurial response of different potato numbers of trials carried out and published, and varieties. Oriatrike or Physik Reﬁned in the advancement of methodological aspects (translated by J. A clinical trial of guise) as being the Medical Research Council sanocrysin in pulmonary tuberculosis. Am Rev streptomycin trial,1 there remains some contro- Tuberc (1931) 24: 401. Treatment allocation in that one of the most substantial reviews of histor- controlled trials: why randomise? Br Med J (1999) ical aspects of trials is based on work for a 1951 318: 1209. JAm and other supporting references–but no mention Med Assoc (1938) 111: 1168–73. Clinical trials of anti- histaminic drugs in the prevention and treatment This chapter is based heavily on work by of the common cold. Chichester: John Wiley cortisone and aspirin in the treatment of early & Sons (1998). A comparison of REFERENCES cortisone and aspirin in the treatment of early cases of rheumatoid arthritis – II. Br Med J (1948) ical trial of long-term anticoagulant therapy in 2: 769–82. The Evil That Has Been Said of report of a co-operative clinical trial of ACTH, Doctors: Extracts From Early Writers (translated cortisone, and aspirin. Peto R, Pike MC, Armitage P, Breslow NE, Cox bunals under Control Council Law No.
With selegiline order 100mg extra super levitra, observe for: (1) CNS effects—agitation buy generic extra super levitra 100mg on line, ataxia generic extra super levitra 100 mg mastercard, bradykinesia discount 100 mg extra super levitra mastercard, confusion, dizziness, dyskinesias, hallucinations, insomnia (2) Nausea, abdominal pain g. With entocapone and tolcapone, observe for: These effects occurred more commonly than others during clinical (1) Anorexia, nausea, vomiting, diarrhea, constipation trials. Drugs that increase effects of anticholinergic drugs: (1) Antihistamines, disopyramide (Norpace), thiothixene These drugs have anticholinergic properties and produce additive (Navane), phenothiazines, and tricyclic antidepressants anticholinergic effects. Drugs that decrease effects of anticholinergic drugs: (1) Cholinergic agents These drugs counteract the inhibition of gastrointestinal motility and tone, which is a side effect of anticholinergic drug therapy. Heart palpitations, headache, hypertensive crisis, and stroke may occur. Also, levodopa should not be started within 3 weeks after an MAO-A inhibitor is discontinued. Effects of MAO-A inhibitors persist for 1–3 weeks after their discontinuation. These effects are unlikely to occur with selegiline, an MAO-B in- hibitor, which more selectively inhibits the metabolism of dopamine. However, selectivity may be lost at doses higher than the recom- mended 10 mg/d. Drugs that decrease effects of levodopa: (1) Anticholinergics Although anticholinergics are often given with levodopa for in- creased antiparkinson effects, they also may decrease effects of levodopa by delaying gastric emptying. This causes more levo- dopa to be metabolized in the stomach and decreases the amount available for absorption from the intestine. Phenothiazines block dopamine receptors dol (Haldol), and thiothixene (Navane) in the basal ganglia. As a result, more levodopa is metabo- lized in peripheral tissues, and less reaches the CNS, where anti- parkinson effects occur. Drugs that decrease effects of dopaminergic antiparkinson drugs: (1) Antipsychotic drugs These drugs are dopamine antagonists and therefore inhibit the effects of dopamine agonists. What are the advantages and disadvantages of the various How Can You Avoid This Medication Error? Why is it desirable to delay the start of levodopa therapy of levodopa was given to Mr. When administering a combi- and, once started, reduce dosage as much as possible? What is the rationale for various combinations of anti- of carbidopa and 250 mg of levodopa. What are the major adverse effects of antiparkinson drugs, 100 mg that was ordered. Both Sinemet and tricyclic antidepressants have Drug facts and comparisons. Louis: Facts and anticholinergic side effects, including urinary retention and con- Comparisons. Describe nonpharmacologic interventions to which skeletal muscle relaxants are used. Critical Thinking Scenario John Moore was in an automobile accident 5 days ago, sustaining trauma to his back and shoulder. Although no bones were broken, he continues to have pain and muscle spasms. His physician orders Tylox PRN for the pain and cyclobenzaprine (Flexeril) tid for muscle spasms. In patients with spinal cord injury, spasticity requires treat- SKELETAL MUSCLE RELAXANTS ment when it impairs safety, mobility, and the ability to per- form activities of daily living (eg, self-care in hygiene, eating, Skeletal muscle relaxants are used to decrease muscle spasm dressing, and work or recreational activities). Stimuli that pre- or spasticity that occurs in certain neurologic and muscu- cipitate spasms vary from one individual to another and may loskeletal disorders. Treatment measures include Muscle Spasm passive range-of-motion and muscle-stretching exercises and antispasmodic medications (eg, baclofen, dantrolene). Muscle spasm or cramp is a sudden, involuntary, painful mus- Multiple sclerosis (MS) is a major cause of neurologic cle contraction that occurs with trauma or an irritant. Spasms disability among young and middle-aged adults, occurs may involve alternating contraction and relaxation (clonic) or more often in women than in men, and has a pattern of ex- sustained contraction (tonic). It is considered an autoimmune musculoskeletal trauma or inﬂammation (eg, sprains, strains, disorder that occurs in genetically susceptible individuals, bursitis, arthritis).
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