By T. Uruk. University of Wisconsin-La Crosse. 2018.
Does the patient have signs or symptoms of a systemic disease cheap olanzapine 2.5 mg overnight delivery, such as heart failure or cirrhosis discount olanzapine 7.5 mg with mastercard, that could cause prerenal failure? Does the patient have symptoms of a disease 5mg olanzapine with amex, such as lupus, that could cause a glomerulonephritis? Is the patient receiving an antibiotic and now has allergic inter- stitial nephritis? In addition to the history and physical examination, urinalysis and measurement of urinary electrolytes are helpful in making the diagnosis. In prerenal failure, urinal- ysis usually reveals a high specific gravity and normal microscopic findings. Individuals with postrenal failure typically are unable to concentrate the urine, so the urine osmolality is equal to the serum osmolality (isosthenuria) and the specific gravity is 1. The microscopic findings vary depending on the cause of the obstruction: hematuria (crystals or stones), leukocytes (prostatic hypertro- phy), or normal (extrinsic ureteral compression from a tumor). Tubulointerstitial nephritis classically produces urine that is isosthenuric (the tubules are unable to concentrate the urine), with mild proteinuria, and on microscopy, reveals leukocytes, white cell casts, and urinary eosinophils. Normally, the excreted sodium represents the dietary intake of sodium, maintaining sodium homeostasis. Furthermore, because the patient has either true volume depletion or “effective” volume depletion, serum aldosterone will stimulate the kidneys to retain sodium, and the urinary sodium will be low (<20 mEq/L). Diuretic medications, which interfere with sodium reab- sorption, are often used in congestive heart failure or nephrotic syndrome. Early in the course of postobstructive renal failure caused by ureteral obstruction, the afferent arteriole typically undergoes intense vasoconstric- tion, with consequent, low urinary sodium levels (Table 17–3). Because of the risk of fatal cardiac arrhythmias, severe hyperkalemia is considered an emergency, best treated acutely medically and not with dialysis. Although it will not lower the serum potassium level, the calcium will oppose the membrane effects of the high potassium concentration on the heart, allowing time for other methods to lower the potassium level. One of the most effective methods for treating hyperkalemia is administration of intravenous insulin (usually 10 units), along with 50 to 100 mL of 50% glucose solution to pre- vent hypoglycemia. Potassium also can be driven intracellularly with a beta-agonist, such as albuterol by nebulizer. In the presence of a severe metabolic acidosis, adminis- tration of intravenous sodium bicarbonate also promotes intracellular diffusion of potassium, albeit less effectively. All three therapies have only a transient effect on serum potassium levels, because the total body potassium balance is unchanged, and the potassium eventually leaks back out of the cells. Definitive treatment of hyperkalemia, removal of potassium from the body, is accomplished by one of three methods: (1) administration of a loop diuretic such as furosemide to increase uri- nary flow and excretion of potassium, or, if the patient does not make sufficient urine, (2) administration of sodium polystyrene sulfonate (Kayexalate), a cationic exchange resin that lowers potassium by exchanging sodium for potassium in the colon, or, finally, (3) emergency dialysis. On physical examination, she has normal jugular venous pressure, is normotensive without orthostasis, and has a benign abdom- inal examination. His physical examination is significant for an elevated jugular venous pressure, clear lung fields, and harsh systolic and diastolic sounds heard over the precordium. His urine output has fallen to 300 mL over 24 hours, and his serum creatinine has risen from 1. Which of the following laboratory values would be most consistent with a prerenal etiology of his renal insufficiency? Renal ultrasound is the next appropriate step to assess for hydronephrosis and to evaluate for bilateral ureteral obstructions, which are common sites of metastases of cervical cancer. Use of loop diuretics may increase her urine output somewhat but does not help to diagnose the cause of her renal fail- ure or to improve her outcome. Further imaging may be necessary after the ultrasound, but use of intravenous contrast at this point may actually worsen her renal failure. The patient has uremia, hyperkalemia, and (likely) uremic peri- carditis, which may progress to life-threatening cardiac tamponade unless the underlying renal failure is treated with dialysis. As for the other treatments, insulin plus glucose would treat hyperkalemia, and bicarbonate would help with both metabolic acidosis and hyper- kalemia, but in this patient, his potassium and bicarbonate levels are only mildly abnormal and are not immediately life-threatening. Supporting information would be a low central venous pressure read- ing (normal central venous pressure is 4-8 mm Hg). The gentamicin level of 4 μg/mL is elevated (normal <2 μg/mL) and may predispose to kidney damage. Clinical Pearls ➤ The two main causes of renal failure in hospitalized patients are prerenal azotemia and acute tubular necrosis. Other indica- tions include hyperkalemia, metabolic acidosis, severe hyperphos- phatemia,and volume overload when refractory to medical management. This page intentionally left blank Case 18 A 27-year-old woman presents to the emergency room complaining of retrosternal chest pain for the past 2 days. The pain is constant, not associated with exertion, worsens when she takes a deep breath, and is relieved by sitting up and leaning forward. Her neck veins are not dis- tended; her chest is clear to auscultation and is mildly tender to palpa- tion. Her heart rhythm is regular, with a harsh leathery sound over the apex heard during systole and diastole. Chest X-ray is read as normal, with a normal cardiac silhouette and no pulmonary infiltrates or effusions. She has no radiographic evidence of a large pericardial effusion and no clinical signs of cardiac tampon- ade.
Plant Summaries—P • Primula root: 5–10% triterpene saponins (primula acid A) discount olanzapine 10 mg online, phenol gly- 1 cosides (0 generic olanzapine 7.5 mg amex. In animal studies quality 7.5mg olanzapine, the herb 6 was found to increase the volume of bronchial secretions. The 44 swelling index of the preparations used in medicine should be no less than 45 10. The stool volume increases, the transit time 50 Plant Summaries—P 1 decreases (a desirable effect in constipation), and intestinal peristalsis is 2 stimulated. When used to treat diarrhea, the herb leads to fluid binding, 3 thereby normalizing the transit time. Allow whole or coarsely crushed seeds to swell 15 in water, then take with plenty of water (150 mL for each 5 g of the drug). A physician should be con- 19 sulted in any case when diarrhea lasts for more than 3 to 4 days. Blockage of the esophagus or 22 intestine and choking attacks can occur if the patient, especially when elderly, 23 does not take an ample supply of water. Psyllium polysaccharides can increase the effects of insu- 27 lin or oral antidiabetic drugs. In humans, 49 they have analgesic effects in headaches caused by nervous tension and are 50 effective in treating psychasthenic neuroses. Plant Summaries—P Warning: When pyrrolizidine alkaloid-containing herbs are adminis- 1 tered at high doses or chronically, they can induce hepatotoxic, muta- 2 genic, teratogenic, and carcinogenic effects. In 9 that case, they should be used according to the instructions supplied by the 10 manufacturers. Industrial manufacturers 13 are able to prepare extracts that are (virtually) pyrrolizidine alkaloid-free. The seeds are a foodstuff, but are also used as an herb- 26 al remedy for prostate and irritable bladder complaints. The experimental data are hardly sufficient to docu- 37 ment the clinical efficacy of the herb. There is empirical evidence of the ef- 38 ficacy of the herb in treating prostatic hyperplasia but clinical studies are 39 still not sufficient. Reserpine, one of its alkaloids, is used in multidrug antihyperten- 35 sive medications. The herb consists of the dried, fleshy, central 47 bulb sections of the white onion species Urginea maritima (L. These include increased muscle tone in the gastrointestinal region, 28 lack of appetite, nausea, diarrhea, headaches, and irregular pulse. Rinse the mouth or gargle with the fresh- 19 ly prepared infusion 2 to 3 times a day. The leaves consist of the fresh or 33 dried foliage leaves of Rosmarinus officinalis L. Diterpe- 37 nes (bitter-tasting substances), caffeic acid derivatives (rosmarinic acid), 38 flavonoids, and triterpenes are also present. In animals, the 41 herb was found to have spasmolytic (biliary tract, small intestine), chole- 42 retic, and hepatoprotective effects. In humans, rosemary oil irritates the 43 skin and increases the circulation when applied topically. The herb consists of the fresh or dried foli- 5 age leaves of Salvia officinalis L. Caffeic 8 acid derivatives (3–6%) consisting mainly of rosmarinic acid and chloro- 9 genic acid. The tannins (rosmarinic 15 acid) have anti-inflammatory, astringent, and antihydrotic effects. J Nat 44 Prod 56 (1993), 1426–1430; Tada M et al: Antiviral diterpenes from Salvia 45 officinalis. The herb consists of the fresh plant 8 material or dried aerial parts of Hypericum perforatum L. Solid and liquid hypericum prepara- 33 tions should be given at doses corresponding to 300 mg native extract 34 (standardized to 0. Nonetheless, 40 fair-skinned individuals should take due precaution when using Hyperi- 41 cum. The effective- 47 ness of the drug has been investigated quite thoroughly in a large number of 48 human studies. Münch Med 6 Wschr 138 (1996), 29–33; Rammert K: Phytopharmaka: Johanniskraut als 7 Antidepressivum. Deutsche Apotheker Ztg 136 (1996), 4131–4132; 8 Teuscher E, Lindequist U: Biogene Gifte – Biologie, Chemie, Pharmakologie. Its berries were first introduced to contemporary herbal 14 medicine towards the beginning of the twentieth century. Owing to itsβ-sitosterol con- 26 tent, it increases the uterine weight of female mice after injection. Li- 28 pophilic extracts of the herb induce spasmolysis of the smooth muscles of 29 organs. The extract was found to have antiexudative and decongestive ef- 30 fects in animals and also promotes the degradation of prostaglandins and 31 leukotrienes. Phytomedicine 3 (1996), 105– 11 111; Engelmann U: Phytopharmaka und Synthetika bei der Behandlung der 12 benignen Prostatahypertrophie.
Particular care is needed when measuring certain nuclides that emit low energy 123 111 radiations best olanzapine 5 mg, for example I and In cheap 5 mg olanzapine with amex. Attenuation of these low energy radiations will occur to a greater extent when measuring the activity inside a glass vial than in a plastic syringe generic olanzapine 7.5mg amex. Therefore the activity measured in the syringe may appear to be higher than that present in the vial from which the nuclide was dispensed. In such circumstances it is advisable to measure the vial before and after dispensing the radiopharmaceutical into the syringe. The difference between the readings gives a more reliable indication of the dispensed activity. All radioactive materials are likely to have some radionuclidic impurities, albeit at very low levels, which can make their determination difficult. The situation most relevant to hospitals and clinics is the determination of levels of 99Mo in 99mTc eluted from a generator. Fortunately, this can readily be 99 determined by a screening method since the principal gamma energy of Mo (740 keV) is much higher than that of 99mTc (140 keV). The total activity of a sample is measured in the normal way in a dose calibrator. It is then possible to calculate the amount of 99Mo present and express this as a percentage of the 99mTc. The determination should therefore be carried out on the first eluate of a generator and on other eluates as deemed necessary. Other possible radionuclidic contaminants of the 99mTc eluate arise from impurities in the 99Mo used and will vary according to the method used in its 235 production. Molybdenum-99 produced by fission of U can contain very small amounts of 131I, 103Ru and nuclides of strontium that are not likely to be present in 99Mo which is produced by neutron irradiation of 98Mo. The measurement of these impurities normally has to be performed on an eluate that has been allowed to decay sufficiently, and also requires specialized equipment that is likely to be beyond the means of routine radiopharmacy and nuclear medicine departments. For many radiopharmaceuticals the radiochemical purity will be expected to be greater than 95%, but this is not universally so. For radiopharmaceuticals purchased in their final form, manufacturers will normally declare the radiochemical purity and the radiopharmacy may not need to perform any further determinations. For materials prepared in-house, either totally from original materials or purchased kits, radiochemical purity determinations are useful to establish the suitability of the final product. Low radiochemical purities may lead to an unintended biodistribution of the radiopharmaceutical. For diagnostic agents, this may lead to confusion in the diagnosis and for therapeutic radiopharma- ceuticals it can produce significant dosimetric problems. A range of techniques is available for such determinations, but the techniques must be reliable and simple, and preferably rapid, to perform such that, in an ideal situation, the radiochemical purity of materials containing short lived radionuclides can be established prior to their administration. The simplest and most widely used technique is that of planar chromato- graphy, using suitable stationary phases (e. The choice of stationary and mobile phases is determined by the nature of the radiopharmaceutical, and must be such that the various radiochemical species 502 7. The techniques can be carried out with very simple apparatus, for example with beakers or measuring cylinders as chromatography tanks; in view of the scale of the operation only small volumes of solvent are needed. The levels of each species can be determined by scanning the stationary phase with a suitable detector or cutting it into sections and placing each in a counter. However, the limitations of these simple systems need to be borne in mind, since in many of them only certain impurities (e. Most of the activity may remain at the point of application on the chromatography strip and thus be unresolved. The determination is therefore more correctly described as radiochemical impurity determination, since the exact chemical nature of the species remaining at the point of application has not been determined. The technique utilizes the separating power of adsorbent materials packed into stainless steel columns through which a solvent is pumped at high pressure. Different radiochemical species are identified by monitoring the eluate from the column and noting the time at which radio- activity is detected. This technique has limitations in that the apparatus is expensive and may not be routinely available to hospital radiopharmacies. In addition, certain radiochemical species, for example hydrolyzed reduced Tc in Tc radiopharmaceuticals, may be retained on the column used to achieve the separation and may not therefore be accounted for in the analysis. By using appropriate eluents, different species can be selectively removed from the cartridge and, providing a sufficiently high radioactive concentration is used, activity can be determined with a dose calibrator or other simple scaler. The most likely situation to be met in radiopharmacies is the presence of Al ions in Tc radiopharmaceuticals. Very high levels of Al can be toxic to patients, but it is unlikely that such problems will arise from admin- istration of a radiopharmaceutical. However, lower levels can adversely affect radiopharmaceutical formation or stability, for example of colloidal radiophar- maceuticals, where the trivalent Al cation can alter the surface charge of particles and lead to aggregation and hence an altered biodistribution. Aluminium can be detected by a simple colorimetric limit test, using either a solution or indicator strips containing an Al sensitive marker such as chromazurol S. By comparing the colour obtained with a small volume of the eluate of a Tc generator and that from a solution containing a specified concen- tration of Al ions (generally 5 or 10 parts per million), it can be determined that the Al content of the eluate is below the specified level and hence suitable for use. Particle size can be determined by light microscopy, using a graduated slide to ensure that there are no oversize particles and that a suitable range of sizes is present. The limitations of the method are that it is usually only possible to observe a limited number of particles and that prolonged observation subjects the eyes to an increased radiation burden. These limitations can be overcome by reconstituting a macroaggregate kit with saline and observing non-radioactive particles.
Degree * Among those who responded that the educational qualification is "very Further olanzapine 5mg with visa, most treatment providers see important" cheap 7.5mg olanzapine visa. Program Staff Directors Providers Despite this variability in perceptions regarding High volume of paperwork/reporting what the treatment system should look like generic 20mg olanzapine with amex, requirements 76. While limited education and training of most providers and a provide treatment for co-morbid conditions treatment culture largely steeped in the self-help Insufficient number of trained master’s- 28. We haven’t inadequate education and training of treatment 161 effectively brought practical research results to providers in evidence-based practices, the 168 individual providers…so they can use it. Janes implementing many evidence-based practices Former Director and the qualifications that the majority of the Florida Office of Drug Control 162 treatment workforce currently possesses. Office of the Governor Because most treatment providers are not adequately trained, they are not capable of Evidence from research findings is not generally performing health assessments, prescribing accessible and understandable to providers; 169 we’re failing miserably at that. National Association of Lesbian and Gay Most also are not trained in the scientific method Addiction Professionals or clinical research, further impeding their (now Vice President, and association now called ability to integrate clinical research findings into The Association of Lesbian, Gay, Bisexual, 164 Transgender Addiction Professionals treatment practice. They also were more likely to have * Evidence-based practice involves the use of current staff with advanced degrees and less likely to have evidence in making decisions about patient care. The authors of this study speculate Evidence-based practices aim to combine the best that programs with managed care contracts might be available research and clinical judgment while taking likelier than those without such contracts to be into account patient characteristics and needs. For example, based practices tended to be more highly while numerous guidelines have been produced 172 †† 178 educated. In contrast, specialists is essential to help educate and train providers with a strong 12-step orientation to other physicians, serve as equal partners in treatment tend to perceive evidence-based regular medical practice and provide specialty 175 183 practices as less acceptable. For many recovering paraprofessional Efforts also must be made to translate physician counselors, their counseling “trump card” is training into practice. A lack of time and that their personal experience is exemplary of resources make it difficult for physicians to 177 how recovery works. Poor training in the care of patients fourth-year medical students in New York City with addiction relates to low confidence among found that the majority (85 percent) did not physicians in their ability or competence to treat know of local smoking cessation programs to 193 such patients, negative attitudes toward patients which to refer patients. And a national survey with addiction, pessimism about the of directors and assistant directors of U. They may assess, but they don’t and inhibit the acceptance of biological models 187 195 intervene. Curriculum time and the number of faculty with Only a small proportion of primary care expertise in addiction education pale in physicians feel “very prepared” to detect comparison to curriculum time and the number particular types of risky use (alcohol--19. A students and I feel that too many of our attending state-based 2006 survey of primary care physicians have not demonstrated to us that they physicians found that the vast majority (88 believe that addiction can and should be percent) screen for diabetes in adults with risk addressed and that attitude affects patient care factors such as obesity, hypertension and a 198 189 for the worse. Another national study found that 199 established, yet there often are more addiction only half of psychiatry residency programs offer -217- 205 psychiatry residency positions available than ability to provide psychosocial therapies. For example, overwhelming evidence has percent); and “smoking patients are not proven that smoking cessation interventions are interested in smoking cessation counseling” 206 clinically effective and cost effective and that a (19. Yet many medical schools do not training in caring for patients with risky 202 207 require clinical training in smoking cessation. Only about half of dental * schools and dental hygienist programs have My relapse was in part due to ignorance in the tobacco cessation clinical activities integrated in medical profession and lack of medical 210 their student clinics. This is despite the fact addiction understanding during a life- threatening illness. Yet, nurses are not clinical psychologists are highly trained in adequately prepared to perform these services, psychosocial therapies, many of which can be particularly tobacco cessation for which applied effectively to addressing addiction in the research indicates they can be particularly 215 significant proportion of their patient population effective. Barriers to the implementation of that has co-occurring addiction and mental smoking interventions include a reported lack of 204 motivation, self- efficacy, institutional support, health disorders. Nursing school curricula screening and intervention for risky substance have little tobacco control content; there is a users and in diagnosing, treating or referring lack of tested curricula, nurse educators are not patients with addiction, some fail to identify * risky use or addiction or lack confidence in their Forty-seven percent of dental schools and 55 percent of dental hygienist programs. Specifically, cessation interventions are effective in providing although it is well understood that dosages 218 those services, and despite the important role between 60-100 mg per day promote retention in 225 pharmacists can play in preventing the misuse of treatment and reduction of opioid use, 34 219 controlled prescription drugs, most are not percent of patients are given doses of less than well trained to perform these functions, have 60 mg per day and 17 percent are given doses of * 226 little confidence to do so and believe that most less than 40 mg per day. Treatment patients are not interested in having them programs more likely to give suboptimal doses 220 intervene. A study of pharmacists in Florida involving opioids be integrated into mainstream found that 29. The underutilization of pharmaceutical therapies in addiction treatment is another example of the Furthermore, despite the potentially vast market disconnect between addiction treatment services for pharmaceutical treatments for addiction, the and medical care. Many addiction treatment pharmaceutical industry has not made providers are unable to prescribe pharmaceutical substantial investments in the development of therapies and medical professionals who could new and effective addiction treatment 231 prescribe such therapies fail to address medications. A related problem is that some contributing factors to the increased medical medical professionals appear to have a treatment of mental health disorders, such as disproportionate concern about the safety risks depression and anxiety, in the past two decades of addiction medications relative to medications has been the development and marketing of aimed at treating other medical conditions. For pharmaceutical treatments for these 232 example, although side effects for some conditions. However in recent years, the addiction medications have been noted and pharmaceutical industry has cut back safety concerns raised--particularly with regard dramatically on investments in the development 223 of new pharmaceutical therapies for these and to smoking cessation treatments, side effects 233 exist for many medications aimed at treating other mental health conditions. The large other health conditions and typically are profits that pharmaceutical companies were able acknowledged as an acceptable risk of treatment. Addiction treatment providers do not speak with Coupled with the rising cost of research and clarity or consistency about what the goals of development, the fact that pharmaceutical treatment are, what counts as quality treatment, companies face dramatic losses once the patents how performance and outcomes should be on many of their largest money-making drugs measured and what practices should be expire makes the current climate for the implemented to improve treatment and achieve development of new innovative medications * 239 measurable outcomes. For example, transporters that underlie addiction and that are organizations like the Council on Graduate promising targets for the development of Medical Education and the National Advisory 235 medications to prevent and treat addiction. Council on Nurse Education and Practice are public-private partnerships with Congressional Aside from economic concerns, other factors mandates to provide sustained assessment of the inhibiting investments in new pharmaceutical 241 needs of the medical and nursing fields. Even for which states that every physician must assume smoking cessation, which offers a huge clinical responsibility for the diagnosis and potential market, investments are negligible referral of patients with addiction and explicates compared with the costs associated with the particular competencies needed to fulfill that developing medications to treat the responsibility. Despite these and other efforts by government and professional Translating the rapidly-evolving science of organizations to put forth guidelines and addiction into science-based treatments will principles aimed at ensuring proper training in require dramatic changes in incentives for the risky substance use and addiction, physicians pharmaceutical industry to invest in innovative continue to be insufficiently equipped to address medications, increased public understanding that 242 the needs of their substance-involved patients. Such inconsistency in goals makes and outcome measurement, including limited measuring and assessing the effectiveness of consensus regarding core quality standards and treatment very difficult. The primary goals of medical care are the prevention, diagnosis and treatment of illness, injury and disease, and the consequent 246 relief of pain and suffering.
10 of 10 - Review by T. Uruk
Votes: 212 votes
Total customer reviews: 212