Zestril

By H. Trano. Philander Smith College.

If the posterior epidural space echo is more than 8 cm from the skin (or the spinous process deeper than 4 cm) a longer needle is chosen (more than 9 cm in length) discount 2.5 mg zestril mastercard. Ultrasound imaging improves learning curves in obstetric epidural anesthesia: a preliminary study quality 10mg zestril. Incidence and etiology of failed spinal anesthetics in a university hos- pital: a prospective study order zestril 5mg with visa. Incidence and causes of failed spinal anesthetics in a university hospital: a prospective study generic 5 mg zestril free shipping. Paramedian access to the epidural space: the optimum window for ultra- sound imaging. This transverse midline sonogram demonstrates the acoustic shadows of the articular processes. If the probe is moved away from an interspace, a spinous process is viewed and produces a triangular acoustic shadow (transverse midline view). At higher levels (high lumbar or low thoracic interspaces) the roundedness of the subarach- noid space and dural echoes can be appreciated on transverse midline view of the interspace. The saw sign represents the base of the lamina and articular processes of the lumbar vertebrae (the teeth of the saw) and the interspaces (the spaces between the teeth). To obtain this view, the transducer is placed 2 to 3 cm off midline and tilted to the center of the spinal canal. With a curved transducer the anterior complex is slightly longer than the posterior complex in longitudinal paramedian view because of the beam angles. In some subjects the echoes from the ligamentum favum and posterior dura (the posterior complex) can be resolved into a doublet of separate echoes, indicating direct imaging of the posterior epidural space in longitudinal paramedian view. The hyperechoic linear echoes of the sacrum can be identifed and, by inference, the L5-S1 interspace. Longitudinal paramedian views of the thoracic spine reveal smaller interspaces for epidural catheter placement. This view can be useful in obese subjects for offine markings to help guide midline approaches to neuraxial blocks. The caudal epidural space can be accessed through the sacrococcygeal ligament that covers the sacral hiatus. Caudal blocks provide anesthesia for genitourinary and anorectal surgical procedures. This procedure is normally performed by placing a needle or catheter through the sacrococ- cygeal ligament for injection of local anesthetic drugs. Unlike subarachnoid blocks, caudal blocks are relatively easy to perform in prone position. The volume of the epidural space within the sacral canal is highly variable, with estimates ranging from 10 to 26 mL in 1 adults (Table 56-1). In this study of 37 adults (23 female, 14 male), the sacrococcygeal membrane was signifcantly thicker in females than in males (mean values, 3. The sacral canal volume was signifcantly smaller in females than in males 1 (mean values 13. Because the sacral canal volume varies, the dose required to achieve a given level of caudal epidural block varies from individual to individual. In adults, the dural sac of the subarachnoid space ends between the S1 and S2 sacral 1 segments. In this study, the distance between the dural sac and sacrococcygeal ligament ranged from 34 to 80 mm. The S5 and coccygeal nerves normally exit the sacral canal through the sacral hiatus. Table 56-2 summarizes the estimates of the level of the caudal termination of the dural sac in adults gathered from several studies. A number of conditions can make 9,10 caudal block diffcult, including narrowing or complete absence of the sacral hiatus. The sacral cornua are prominent 9 (>3 mm of bony prominence on each side) in only 21% of adult sacrums, and therefore assessment by palpation is problematic. Inadvertent intravenous injection is relatively 11 common during caudal block, occurring in about 5% to 10% of these procedures. The posterosuperior iliac spines (the superolateral sacral crests of the sacrum) form an equilateral triangle with 10 the sacral hiatus. Although this approximation is accurate, the clinical assessment of land- mark position can be diffcult. Traditional techniques also rely on tactile sense of needle entry into the caudal space. However, the sacrococcygeal ligament is soft in children and 12 may therefore not be easy to detect manually by needle advancement. Sonography can determine the location and size of the sacral hiatus for needle tip place- ment. In addition, ultrasound can be used to image the distribution after caudal epidural injection. However, the bone of the sacrum prevents ultrasound imaging of most of the sacral canal. One concern is that acoustic shadowing from the overlying bone can prevent detection of intravascular injection during caudal blocks, particularly in adults. Ultrasound imaging may be of particular utility in guiding caudal injections in patients with spinal 15 dysraphism. Suggested Technique Caudal block with ultrasound is optimally performed in prone position with sterile trans- ducer cover and skin preparation. The wide variety of transducer selections for caudal block 11 depend on patient size. Average-sized adults image well with a standard linear transducer for the procedure. A 21-gauge, 5- to 7-cm echogenic needle can be used for in-plane caudal block through the sacral hiatus. Two common approaches are the longitudinal in-plane approach and transverse out-of-plane approach. There is a characteristic tent and recoil when the sacrococcygeal ligament is punctured by the block needle. As the needle punctures the sacrococcygeal ligament, the needle tip disappears owing to acoustic shadowing from the overlying bone. With the probe in transverse position, it is possible to observe bilateral spread. Anterior 15 displacement of the posterior dura occurs in more than 90% of caudal epidural injections. Turbulence of the injection, as manifested by a mosaic pattern on color Doppler, also indi- cates successful injection. Longitudinal paramedian view can be advantageous for assessing the level of injection in adults with the sacrum in the feld as a reference point. The sacral hiatus is formed by nonfusion of the ffth sacral vertebral arch and is covered by the sacrococcygeal membrane. There is wide variation in the anatomy 17,18 of the sacrum, particularly in pediatrics. These layers are much less echobright than the underlying bone of the sacral canal. For this same reason it is diffcult to visualize the sacrococcygeal ligament along its entire length. Specifcally, no patients with sacral canal diameters less than 2 mm (as measured 22 at the apex of the sacral hiatus) had successful blocks in one clinical series. Level of termination of the spinal cord and the dural sac: a magnetic resonance study. Infuence of age and sex on the position of the conus medullaris and Tuffer’s line in adults. Determining the level of the dural sac tip: magnetic resonance imaging in an adult population. An anatomic study of the sacral hiatus: a basis for successful caudal epidural block. Determination of the optimal angle for needle insertion during caudal block in children using ultrasound imaging.

Causes panreactivity in antibody panel Prewarm technique for antibody tests and crossmatches B generic 5 mg zestril visa. Mimics anti-M pattern in antibody panel Prewarm technique for antibody tests and crossmatches 36 discount 2.5mg zestril mastercard. A type and screen specimen on a 37-year-old female is submitted to the blood bank buy discount zestril 5 mg. You have been asked to justify the expense associated with upgrading the methodology used for type and screen testing from semiautomated gel technology to an automated platform order 2.5 mg zestril otc. A Kleihauer-Betke stain shows a result of 2% for a 28-year-old female who recently delivered at 39 weeks of gestation. Transfusion-transmitted infection is an important concern in transfusion practice. Which of the following combinations is correct regarding the type of blood products associated with the highest rate of bacterial contamination and the associated fatality? Type of bacteria most commonly If contaminated, type Type of blood product contaminated with of bacteria that is more fatal A. Which of the following situations correctly describes when a blood product can be transfused if the infectious disease markers are positive? Based on the results provided, which product is considered a quality control failure? The evening shift supervisor in the transfusion service of a busy tertiary care facility is retiring after 20 years of service. This a bench supervisor position with responsibility for equipment quality control, workfow coordination and review of the testing/products required for the following day’s surgical and outpatient schedules. What childcare arrangements do you have in place to allow working an evening shift schedule? The irradiation indicator on the product shows a successful irradiation cycle; however, the red cell expiration date was not changed prior to shipping B. An antigen negative red cell unit is ordered by St John’s Hospital and is erroneously shipped to St Joseph’s Hospital, resulting in a service delay C. The packing slip states that 8 units of O Rh negative red cells were shipped; however, there are only 7 units in the box D. A reagent quality control failure was overlooked by the novice night shift technologist. The supervisor noted the failure on the next morning and the test run is repeated before the blood products were shipped E. He insists that the request for irradiated products was submitted when the patient was admitted; however, the transfusion service had no record of the request. Answer: E—Plasma, as a replacement fuid, has the highest risk of citrate toxicity in an apheresis procedure. Iron supplementation should be given to avoid the need of transfusion if the patient develops perioperative anemia. Answer: A—Vascular insuffciency of the lower limbs can be a complication of whole blood exchange. Therefore, providing crossmatched compatible platelets may be the quickest method to help her achieve a reasonable platelet count increment with transfusions. Of note, this patient also has mild thrombocytopenia, which is another feature of this diagnosis. Answer: A—Transfusions of blood products or infusions of colloidal or crystalloid solutions may cause a plasma dilution effect signifcant enough to alter the results of communicable disease testing. Postinfusion sample can be used for infectious testing if the patient (>12 year-old) receives <2,000 mL of whole blood, red blood cells, and/or colloids within 48 h or <2,000 mL of crystalloid within 1 h, or any combination. Answer: C—The donor is not a candidate for apheresis platelet donation today due to aspirin (defer for 48 h). Answer: D—The red cells of an individual with the Bombay phenotype (Oh) lacks the H antigen and anti-H will be detected in their plasma. Answer: D—The pattern of reactivity fts anti-Fy , an IgG antibody directed against a fcin sensitive antigen. Answer: E—This clinical scenario represents a delayed serologic transfusion reaction. A close observation (without any treatment) is all that is necessary at this time. Answer: D—Individuals whose red cells are Le(a−b+) are not expected to make Lewis antibodies. Answer: C—Based on the transfusion guidelines, most experts recommend the dose between 10 and 20 mL/kg for plasma transfusion. This dose of plasma would be expected to increase coagulation factors by ∼10%–20% immediately after infusion. An allogeneic donor is deferred from all types of blood donation for 8 weeks after whole blood donation. Answer: C—Internet service, utilized for multiple purposes in the laboratory, is considered overhead or an indirect expense. Answer: C—Platelets are the blood products that have the highest rate of bacterial contamination. However, the fatality rate is higher when the platelet unit is contaminated with Gram negative bacteria. Answer: C—Interview questions that could potentially discriminate against age, sex, religion, or other factors are not allowed. Answer: A—An Ishikawa diagram, also known as a fshbone or cause and effect diagram would be most appropriate to investigate the various causes contributing to the error, such as methods, people, equipment, and environment. Basic prin- ciples include regulatory requirements and economical evaluation of new assays. They should also be able to interpret statistical tests/analyses, as an integral part of method comparison and assay validation. This chapter provides a review of laboratory principles and statistical methods, as well as a brief discussion on different study designs. Of note, this may be an advanced chapter for some students and you may wish to cover this chapter later on in your test preparation. Attention: Some diseases and scoring systems are used as examples in this chapter; however, intimate knowledge of these diseases and systems is not required to answer the questions. They are used to provide a reference for the statistical or laboratory management concepts. Further, the data used for the questions in this chapter are only for illustration—they are not actual data, and thus, the conclusions (i. Please answer Questions 1–9 based on the following scenario: You were recently appointed as the Medical Director for the Hemostasis Laboratory at your hospital. You would like to evaluate the possibility of perform- ing the assay in your laboratory. You have several options for this assay, including several commercially available kits, as well as an in-house developed assay. Waived tests (Answer A) are defned as “simple laboratory examinations and procedures that have an insignifcant risk of an erroneous result. It is also responsible to promote healthy and safe behaviors and to train the public health workforce, including disease investigators. Based on the information, at what point (A,B,C,D or E) will the commercial assay give you the most diagnostic accuracy (i. Cutoff point with the most diagnostic Cutoff point that gives the in-house developed accuracy for commercial assay assay more sensitivity than commercial one A. Point B is just the cutoff that the sensitivity and specifcity of your in-house assay is the same as the commercial one. Based on the fgure and the above explanation, all the other choices (Answers A, B, C, and E) are incorrect. On the other hand, confrmation tests should be very specifc because it is used to rule in or confrm the disease. Of course, with most of the testing we perform in the laboratory, we would prefer that a test has high sensitivity and specifcity, so we are able to both detect and confrm a disease with a single test.

Hirsutism may also be found in porphyria buy 5mg zestril with amex, anorexia nervosa 5 mg zestril with visa, and the Cornelia de Lange syndrome (Amsterdam dwarfism) buy 5 mg zestril free shipping. Approach to the Diagnosis Clinically it is most important to look for obesity and virilism order zestril 10 mg amex. The workup initially should include serum cortisol or 24-hour urine 17-hydroxycorticoids or 17-ketosteroids, serum prolactin, and a thyroid profile. Serum testosterone Case Presentation #47 A 19-year-old, 6-month-pregnant Hispanic woman complained of increasing hair growth on her face. Physical examination revealed a male escutcheon, enlarged clitoris, and purple striae of the abdomen. Hoarseness may occur from involvement of the larynx, myoneural junction of the vocal cord muscles, vagus nerve, or the brainstem. It may also be involved with allergy, neoplasms, and chronic trauma from overuse of the voice. The myoneural junctions prompt the recall of myasthenia gravis, whereas the peripheral portion of the vagus nerve prompts the recall of the greatest number of disorders; thyroid tumors and surgery to the thyroid, mediastinal tumors, and aortic aneurysms are only a few. The intracranial portions of the vagus nerve may be involved by basilar artery aneurysms, basilar meningitis, platybasia, and foramen magnum tumors. In the brainstem, the nucleus ambiguus is involved in poliomyelitis, ependymomas, Wallenberg syndrome, syringomyelia, and amyotrophic lateral sclerosis. Multiple sclerosis and gliomas may involve the roots of the ambiguus nucleus as they pass through the brain stem white matter. Approach to the Diagnosis A careful examination of the larynx with a laryngoscope or the fiberoptic bronchoscope is essential. The indirect laryngeal mirror is difficult to use and probably should be discarded by those unfamiliar with its use. If no local disease is found, evidence of vagal nerve palsy will be noted by the cord paralysis. A chest x-ray, thyroid function tests, blood lead level, and Tensilon test may be necessary to diagnose recurrent laryngeal involvement. Esophagoscopy (reflux esophagitis) Case Presentation #48 A 48-year-old white woman complained of hoarseness which was intermittent at first but had become steady in the past 4 months. Utilizing your knowledge of anatomy and neuroanatomy, what would be your list of possibilities? Physical examination reveals thickening of the hair, skin, and nails but is otherwise unremarkable. If we picture this neuroanatomy, we can recall most of the causes of Horner syndrome. Brain stem: Wallenberg syndrome (posterior inferior cerebellar artery thrombosis) Spinal cord: Syringomyelia spinal cord tumors, neurosyphilis Thorax: Carcinoma of the lung or esophagus, Hodgkin lymphoma, aortic aneurysm, mediastinitis Table 39 Hoarseness 458 459 Hoarseness. Cervical sympathetics: Laryngeal carcinoma, thyroid carcinoma, cervical rib, brachial plexus neuralgia or trauma Carotid artery chain: Migraine, cluster headaches, carotid thrombosis Approach to the Diagnosis A history of headaches would suggest migraine or cluster headaches as the cause. Pain in the neck or upper extremities without a mass should 460 suggest brachial plexus neuralgia, scalenus anticus syndrome, or Pancoast tumor. X-rays of the chest and cervical spine are indicated in all cases without other neurologic signs. It follows that diseases that invade the bone will cause excessive release of calcium. Paget disease, by increasing the osteoclastic activity in the bone, may cause an elevated calcium level. Intake: Increased intake of calcium usually does not cause hypercalcemia, but when associated with the milk–alkali syndrome or hypervitaminosis D, it may. Look for type 1 and type 11 multiple endocrine neoplasm syndrome in patients with parathyroid adenomas. It follows that the conditions with increased plasma protein (such as multiple myeloma and Boeck sarcoid) may be associated with hypercalcemia. Approach to the Diagnosis A history of neoplasm or clinical evidence of bone disease should alert one to the possibility of metastatic neoplasm. Symptoms of polyuria, polydipsia, weakness, pathologic fracture, and weight loss should suggest hyperparathyroidism. A cortisone suppression test will help differentiate hyperparathyroidism from metastasis. A 24-hour urine calcium will be useful in differentiating familial hypocalciuria from hyperparathyroidism because the urine calcium will be high in the latter. If we consider the liver, it should prompt recall of primary biliary cirrhosis, hepatoma, glycogen storage disease, and obstructive jaundice. If we consider the kidney, it should facilitate recall of uremia and the nephrotic syndrome. Considering the endocrine glands should facilitate recall of diabetes mellitus, acromegaly, hypothyroidism, Cushing disease, insulinoma, and isolated growth hormone deficiency. Two other groups of conditions associated with hypercholesterolemia are drugs and the primary hyperlipoproteinemias. Drugs that may cause an elevated cholesterol level include exogenous estrogen and corticosteroids, thiazides, and β-adrenergic blocking agents. These can be differentiated from the other primary hyperlipoproteinemias by determining the presence of chylomicrons and elevated triglycerides. Type I hyperlipoproteinemia is not associated with an increased cholesterol, whereas type V is associated with chylomicrons and an increase of both cholesterol and triglyceride levels. Approach to the Diagnosis It is wise to repeat the study because many patients have not fasted for 14 hours. One should look for a family history of lipoproteinemia as well as determine what drugs the patient is taking. As mentioned above, lipoprotein electrophoresis should be done as well as a lipid profile and overnight refrigeration of plasma to look for lactescence (a sign of chylomicrons). Considering the pancreas should prompt the recall of diabetes mellitus and glucagonomas. Considering the adrenal gland would prompt the recall of Cushing disease and pheochromocytoma. Visualizing the pituitary should help one to recall acromegaly and basophilic adenoma, whereas visualizing the thyroid should prompt the recall of hyperthyroidism. Other considerations in hyperglycemia are starvation and drug-induced hyperglycemia. Approach to the Diagnosis Obviously, the first thing to do is repeat the blood sugar test after fasting. Clinical evaluation for a history of diabetes, hypertension (Cushing disease and pheochromocytoma), protruding jaw and increasing hat size (acromegaly), polyuria, polydipsia, and weight loss (diabetes mellitus and hyperthyroidism) is important. The increased potassium may be due to hemolyzed blood or excessively tight tourniquet used to draw the blood. If these causes can be ruled out, one can recall most of the causes by thinking of the physiologic mechanisms of excretion and regulation. This may be caused by drugs, heavy metals, transfusion, shock, dehydration, glomerulonephritis, or obstructive uropathy. Regulation: The exchange of potassium and hydrogen ions for sodium in the distal tubule is regulated by the hormone aldosterone. Consequently, in Addison disease this mechanism is partially shut down causing the retention of potassium. Various diuretics such as triamterene and the spironolactones may do the same thing. Metabolic acidosis, especially diabetic acidosis, may be associated with hyperkalemia because the potassium moves out of the cell in exchange for hydrogen ions to buffer the acidosis. Approach to the Diagnosis Most helpful in the diagnosis will be laboratory tests to rule out renal failure and Addison disease. As a precaution, it may be wise to hold all but critical drugs until the diagnosis is certain. M—Malformations include bicornuate uterus, congenital ovarian cysts, endometriosis, ectopic pregnancies, and retained placenta. N—Neoplasms include fibroids, carcinoma, and polyps of the cervix and endometrium. One should also not forget choriocarcinoma, hydatidiform moles, and hormone-producing tumors of the ovary.

Other Relevant Studies and Information: • A follow-up qualitative analysis of this study demonstrated that the palliative care visits provided to the intervention group emphasized “managing symptoms cheap zestril generic, strengthening coping generic zestril 10 mg, and cultivating illness understanding and prognostic awareness cheap zestril 2.5mg mastercard. In addition to discussing her therapeutic options buy discount zestril 10mg on line, should you refer this patient for a pallia- tive care consultation? In addition, early palliative care consultation was associated with prolonged survival. While no well-designed trials have evaluated the impact of early palliative care among patients with metastatic ovarian cancer, based on the results of this trial it is likely that early palliative care is benefcial. T us, it would be quite appropriate to refer this patient to a palliative care specialist who could help manage your patient’s emotional and physical symptoms and could help to establish realistic goals of care. Hospice is designed for patients at the end of life whose primary goal is comfort rather than extending life. Palliative care is designed to improve quality of life among patients with serious illnesses who frequently are receiving therapy aimed at extending— or curing— a disease. American Society of Clinical Oncology provisional clinical opin- ion: the integration of palliative care into standard oncology care. Also, are these treatments superior to usual depression care from primary care doctors? Year Study Began: 1991 Year Study Published: 1996 Study Location: Four outpatient clinics afliated with the University of Pitsburgh. In addition, patients receiving current treatment for a mood disorder were ineligible. Patients with Depression Randomized Usual Care from a Pharmacotheraphy Psychotheraphy Primary Care Doctor Figure 49. Study Intervention: Patients assigned to receive pharmacotherapy were treated with nortriptyline by family practitioners or general internists trained in phar- macotherapy. Patients were initially started on a nortriptyline dose of 25 mg and were seen weekly or every 2 weeks for medication titration. Once patients showed clinical improvement and had therapeutic nortriptyline serum levels (190– 570 nmol/l), they were transitioned to monthly visits for an additional 6 months. Initial treatment of Depression 313 Patients assigned to psychotherapy were treated with interpersonal psycho- therapy by psychiatrists and psychologists. Patients received 16 weekly sessions at their regular medical clinic followed by four monthly maintenance sessions. Patients assigned to usual care were treated by their primary care physicians according to each physician’s regular practices. However, there were no signifcant diferences in depression symptoms between patients assigned to nortriptyline versus psychotherapy (see table 49. Criticisms and Limitations: Primary care doctors treating patients assigned to the usual care group were not always informed immediately that their patients had been diagnosed with depression. T is may have caused a delay in treatment initiation, potentially leading to poorer outcomes among patients in the usual care group. T is demonstrates the challenges of treating patients with depression with either of these modalities. Initial treatment of Depression 315 Other Relevant Studies and Information: • Other trials comparing antidepressant medications with psychotherapy have come to similar conclusions as this one. T e psychotherapy and pharmacotherapy protocols used in this trial were both superior to usual care from primary care doctors, highlighting the need for standardized depression treatment. She has had several previous depressive episodes but has never sought medical atention before. She reports that she has not been sleeping well, her energy level has been low, and she frequently feels guilty and inadequate. She denies problems with her appetite, psychomotor changes, difculty concentrating, suicidal ideations, or frequent thoughts of death. Based on the results of this trial, what treatment options would you con- sider for this patient? Suggested Answer: T is trial demonstrated that psychotherapy and pharmacotherapy were equally efcacious for the initial management of depression; however, clinical improvement was slightly faster with pharmacotherapy. Afer explaining the options to the patient, you should ask which approach she prefers. Antidepressant drugs and generic counseling for treatment of major depression in primary care: randomized trial with patient preference arms. T e efectiveness of psychotherapy in treating depressive dis- orders in primary care practice: clinical and cost perspectives. T e efcacy of psychotherapy in treating depressive and anxi- ety disorders: a meta-analysis of direct comparisons. Combined pharmacotherapy and psychological treatment for depression: a systematic review. Depression in primary care: treatment of major depres- sion: clinical practice guideline. Year Study Began: 1992 Year Study Published: 1994 Study Location: One alcohol detoxifcation unit in the United States. Who Was Studied: Adults with an alcohol use disorder admited to the Veterans Afairs Medical Center Alcohol Detoxifcation Unit for treatment of alcohol withdrawal. Also excluded were those with “current use of or with- drawal from opiates, benzodiazepines, barbiturates, clonidine, or beta blockers. Patients with Alcohol Withdrawal Randomized Symptom-Triggered Fixed-Schedule Therapy Therapy Figure 50. Study Intervention: Patients in both groups were assessed for the severity of alcohol withdrawal on admission and every 8 hours thereafer. Scheduled doses were not given if the patient was somnolent or refused medication. Endpoints: Primary outcomes: Duration of time from admission to last dose of benzodiazepines required as well as the total dose of benzodiazepines administered. Secondary outcomes: Number of times benzodiazepines were administered in response to symptoms and median dose for these administra- tions; severity of alcohol withdrawal; proportion of patients leaving the hospital against medical advice; composite of development of hallucinations, seizures, or delirium tremens; and rates of rehabilitation, readmission, and compliance with follow-up. Criticisms and Limitations: e study excluded patients with current or past seizures, concurrent medical or psychiatric illnesses, and those concurrently using or withdrawing from other drugs and medications, which may limit the generalizability of the results. Patients with a history of or current seizures in particular may beneft from at least a single scheduled administration of benzo- diazepines to prevent recurrent seizures. Finally, the study had limited power to detect difer- ences in several of the secondary outcomes such as leaving the hospital against medical advice or compliance with follow-up. Symptom-triggered versus Fixed-Dose T erapy for Alcohol Withdrawal 321 Other Relevant Studies and Information: • Several other studies conducted in the emergency department,3 on medical wards,4 and in alcohol treatment units5 are consistent with the fndings of this trial. T ese results may only apply to patients who are able to report symptoms and are cared for on a unit equipped to serially assess signs and symptoms of withdrawal. On his initial exam he is breathing com- fortably on 2 liters nasal cannula with minimal wheezing. He reports his last drink as 24 hours prior to admission and he is concerned that he is starting to feel “shaky” and “anxious. Based on the results of the trial, what is the most appropriate strategy to treat his withdrawal? Suggested Answer: T is study found that symptom-triggered benzodiazepine therapy was as efective as fxed-schedule therapy and led to a shorter duration of therapy and a lower total dose of benzodiazepines. T us, it would be preferable to treat him with symptom-triggered therapy rather than fxed-dose therapy, ideally in a seting where staf are well trained in assessing alcohol withdrawal. Individualized treatment for alcohol withdrawal: a randomized double-blind controlled trial. Symptom-triggered benzodiazepine therapy for alcohol with- drawal syndrome in the emergency department: a comparison with the standard fxed dose benzodiazepine regimen. Symptom-triggered therapy for alcohol with- drawal syndrome in medical inpatients. Symptom-triggered vs fxed-schedule doses of benzodiaz- epine for alcohol withdrawal: a randomized treatment trial. American Society of Addiction Medicine Working Group on Pharmacologic Management of Alcohol Withdrawal.