Usual Diagnostic Work-up Research Articles

Impact of amyloid PET in the clinical care of US Veterans in a Tertiary Memory Disorders Clinic

AbstractBackgroundPrior studies assessing the clinical impact of amyloid PET have been limited to assessments before and after the scan. We aim to characterize the impact of amyloid PET in a veterans population with cognitive decline by comparing differences in clinical management within two years of follow‐up.MethodsThe current retrospective observational study includes all patients seen for an initial evaluation for cognitive complaints in the Memory Disorders Clinic at the VA Boston Healthcare System from October 2016 to January 2020. Clinical impact outcomes within two years of follow‐up were compared between patients with and without an aPET scan. Poisson regressions, negative binomial regressions, and binomial logistic regression were used for the analysis. Age, cognitive syndrome, follow‐up time, clinical diagnosis after initial evaluation and MoCA scores were used as covariates. Additionally, propensity score matching was performed to balance confounders between the two groups. To further understand the clinical impact outcomes in the aPET group, multiple regressions were performed within the group.ResultsFive‐hundred‐sixty‐five veterans were included in the analysis. Thirty‐five percent of patients underwent aPET imaging in addition to routine diagnostic workup. The study was positive in 72 patients (36.56%). Having an aPET, in addition to the usual diagnostic workup, was associated with a longer follow‐up time, and a higher diagnostic variability at follow‐up. We did not find an association between aPET use and the number of additional diagnostic studies ordered, early cholinesterase inhibitors prescription, or referrals to social work, research and clinical trials. When analyzing the same clinical utility outcomes within the group with an aPET, we found that a positive result was associated with fewer additional diagnostic tests, less diagnostic variability at follow up visits, more cholinesterase inhibitors prescription, and more research referrals.ConclusionsIn medically complex populations, aPET positivity might be lower than prior studies have described, used more to “rule out” than confirm the diagnosis of Alzheimer’s disease. This lower positivity rate results in less robust differences in classically explored clinical impact variables when comparing patients with and without an aPET.

Association of stroke lesion shape with newly detected atrial fibrillation - Results from the MonDAFIS study.

Paroxysmal Atrial fibrillation (AF) is often clinically silent and may be missed by the usual diagnostic workup after ischemic stroke. We aimed to determine whether shape characteristics of ischemic stroke lesions can be used to predict AF in stroke patients without known AF at baseline. Lesion shape quantification on brain MRI was performed in selected patients from the intervention arm of the Impact of standardized MONitoring for Detection of Atrial Fibrillation in Ischemic Stroke (MonDAFIS) study, which included patients with ischemic stroke or TIA without prior AF. Multiple morphologic parameters were calculated based on lesion segmentation in acute brain MRI data. Multivariate logistic models were used to test the association of lesion morphology, clinical parameters, and AF. A stepwise elimination regression was conducted to identify the most important variables. A total of 755 patients were included. Patients with AF detected within 2 years after stroke (n = 86) had a larger overall oriented bounding box (OBB) volume (p = 0.003) and a higher number of brain lesion components (p = 0.008) than patients without AF. In the multivariate model, OBB volume (OR 1.72, 95%CI 1.29–2.35, p < 0.001), age (OR 2.13, 95%CI 1.52–3.06, p < 0.001), and female sex (OR 2.45, 95%CI 1.41–4.31, p = 0.002) were independently associated with detected AF. Ischemic lesions in patients with detected AF after stroke presented with a more dispersed infarct pattern and a higher number of lesion components. Together with clinical characteristics, these lesion shape characteristics may help in guiding prolonged cardiac monitoring after stroke.

POS-072 PRACTICAL EXPERIENCE WITH THE IMPLEMENTATION OF NGAL FOR AKI DIAGNOSIS IN A CLINICAL SETTING

Kidney injury biomarkers for AKI have been shown to detect AKI earlier, predict progression and better discriminate etiology compared to serum creatinine. These biomarkers have been studied in various clinical trials, but their implementation and prediction capacity in standard clinical settings have rarely been reported. We describe our initial clinical experience during the implementation of the Neutrophil gelatinase-associated lipocalin (NGAL) in our academic medical centre. We prospectively audited the initial implementation and use of urine and plasma NGAL (uNGAL, pNGAL) as diagnostic biomarkers in hospitalised patients with newly diagnosed AKI. This novel biomarker was ordered only by the Nephrology Consult service. Questionnaires for initial evaluation of the suspected etiology and risk of progression were completed by the consulting renal team before and one day after usual diagnostic workup. NGAL results were available for the second follow-up assessment. An NGAL level of 150 ng/mL was used by the SVUH Clinical Biochemistry Laboratory as the cut-off value to discriminate the presence of tubular damage (range 25-3000 ng/mL). An attending nephrologist, not involved in the care of these patients, independently conducted a retrospective review using medical records, to determine the most likely etiology of AKI, and whether or not clinical progression occurred following initial renal consultation. Descriptive statistics and Mann-Whitney U tests were used for analyses. This audit was pre-approved by the SVUH Clinical Audit Committee. Between May and October 2020, 47 NGAL samples were measured (uNGAL, n=23; pNGAL, n=24) in 26 AKI patients, with a median age of 66.5 (IQR 55.3-81.0). Chronic kidney disease was present in 12 (46%) patients. Stage 1, 2 and 3 AKI occurred in 6 (23%), 11 (42%), and 9 (35%) patients, respectively. The median delay between admission and NGAL measurement was 4 (IQR 0-20) days. The creatinine level at diagnosis was similar for pre-renal AKI (median 224 (IQR 157-340) umol/L) and intra-renal AKI (median 247 (IQR 193-487) umol/L). Urine NGAL was 41 (IQR 29-280) ng/mL in the pre-renal group, compared to 1308 (IQR 175-1361) ng/mL for intra-renal AKI (p=0.08), while pNGAL were 251 (IQR 99-340) ng/mL and 420 (IQR 255-865) ng/mL (p=0.19), respectively. NGAL levels were higher in the subgroup of ischemic ATN (uNGAL: 1332 (IQR 888-1365) ng/mL; pNGAL: 495 (IQR 384-889) ng/mL) compared to toxic ATN (uNGAL: 178 (IQR 105-1389) ng/mL; pNGAL 208 (IQR 139-751) ng/mL). According to adjudication, the initial clinical impression of AKI etiology was incorrect in 3 patients (12%), while the initial prediction of progression vs. non-progression was incorrect in 8 patients (31%). In those 8 patients, NGAL values correctly predicted progression in 7 of them. We reported the early use of both uNGAL and pNGAL in clinical practice on the Nephrology consultation service in an academic medical centre. Based on our experience, we consider that NGAL, especially uNGAL can be an interesting tool for differential diagnosis and to predict AKI progression. The diagnostic accuracy of NGAL tests for these purposes may be improved by using a higher cut-off level to determine the etiology and prognosis of new AKI cases. Additional integration of NGAL tests into clinical algorithms for AKI management and follow-up audits are required.

Explicit Diagnostic Criteria for Transient Ischemic Attacks Used in the Emergency Department Are Highly Sensitive and Specific

Background: Making a correct diagnosis of a transient ischemic attack (TIA) is prone to errors because numerous TIA mimics exist and there is a shortage of evidence-based diagnostic criteria for TIAs. In this study, we applied for the first time the recently proposed explicit diagnostic criteria for transient ischemic attacks (EDCT) to a group of patients presenting to the emergency department of a large German tertiary care hospital with a suspected TIA. The aim was to determine the sensitivity and specificity of the EDCT in its clinical application. Methods: A total of 128 patients consecutively presenting to the emergency department of the University Hospital of Lübeck, Germany, under the suspicion of a TIA were prospectively interviewed about their clinical symptoms at the time of presentation. The diagnosis resulting from applying the EDCT was compared to the diagnosis made independently by the senior physicians performing the usual diagnostic work-up (“gold standard”), allowing calculation of sensitivity and specificity of the EDCT. Results: EDCT achieved a sensitivity of 96% and a specificity of 88%. When adding the additional criterion F (“the symptoms may not be better explained by another medical or mental disorder”), specificity significantly increased to 98%. Conclusions: The data show that the EDCT in its modified version as proposed by us are a highly useful tool for clinicians. They display a high sensitivity and specificity to accurately diagnose TIAs in patients referred to the emergency department with a suspected TIA.

ICHD-3 is significantly more specific than ICHD-3 beta for diagnosis of migraine with aura and with typical aura

BackgroundIn the emergency room, distinguishing between a migraine with aura and a transient ischemic attack (TIA) is often not straightforward and mistakes can be harmful to both the patient and to society. To account for this difficulty, the third edition of the International Classification of Headache disorders (ICHD-3) changed the diagnostic criteria of migraine with aura.MethodsOne hundred twenty-eight patients referred to the emergency room at the University Hospital of Lübeck, Germany with a suspected TIA were prospectively interviewed about their symptoms leading to admission shortly after initial presentation. The diagnosis that resulted from applying the ICHD-3 and ICHD-3 beta diagnostic criteria was compared to the diagnosis made independently by the treating physicians performing the usual diagnostic work-up.ResultsThe new ICHD-3 diagnostic criteria for migraine with aura and migraine with typical aura display an excellent specificity (96 and 98% respectively), and are significantly more specific than the previous ICHD-3 beta classification system when it comes to diagnosing a first single attack (probable migraine with aura and probable migraine with typical aura).ConclusionsThe ICHD-3 is a highly useful tool for the clinical neurologist in order to distinguish between a migraine with aura and a TIA, already at the first point of patient contact, such as in the emergency department or a TIA clinic.

Narrow band imaging in head and neck unknown primary carcinoma: A systematic review and meta-analysis.

To estimate the diagnostic performance of Narrow Band Imaging (NBI) in patients with cervical metastasis from head and neck squamous cell carcinoma of unknown primary (SCCUP) origin. PubMed, Embase, and Scopus databases were systematically scrutinized up to July 1, 2019, looking for studies that encompassed the NBI in the SCCUP diagnostic work up. The main inclusion criteria for eligible articles for the meta-analysis were non-evidence of primary tumor after physical examination and conventional cross-section imaging before NBI assessment and the availability of complete data on the diagnostic accuracy of NBI. A set of random-effects model meta-analyses was then performed following the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines. Five studies, conducted between January 2003 and September 2016, comprising 169 patients imaged with NBI, were included in the meta-analysis. The pooled sensitivity and specificity of NBI in patients with head and neck SCCUP was 0.83 (99% CI, 0.54-0.95) and 0.88 (99% CI, 0.55-0.97), respectively. The positive and negative likelihood ratios were 6.38 (99% CI, 1.6-25.44) and 0.06 (99% CI, 0.005-0.86). The pooled diagnostic odds ratio (DOR) was 82.15 (99% CI, 7.06-955). The overall detection rate of NBI was 0.35 (99% CI, 0.18-0.53), which allowed localization the primary tumor in 61 out of 169 patients, otherwise not detected by the usual diagnostic work-up. Current available evidence suggests that NBI has a considerable diagnostic accuracy in patients affected by head and neck SCCUP. Laryngoscope, 130:1692-1700, 2020.

Familial hypercholesterolaemia in patients with ischaemic stroke or transient ischaemic attack.

Identification of patients with familial hypercholesterolaemia (FH) is a prerequisite for the appropriate management of their excess cardiovascular risk. It is currently unknown how many patients with acute ischaemic stroke or transient ischaemic attack (TIA) are affected by FH and whether systematic screening for FH is warranted in these patients. The prevalence of a clinical diagnosis of FH was estimated in a large representative series of patients with acute ischaemic stroke or TIA (ABCD2 score≥3) using the Dutch Lipid Clinic Network Algorithm (DLCNA; possible FH≥3, probable/definite FH≥6). Out of 1054 patients included in the present analysis, 14 had probable/definite FH (1.3%; 95% confidence interval 0.6-2.0) and 107 possible FH (10.2%; 8.4-12.0) corresponding to an overall prevalence of potential FH of 11.5%. Prevalences were even higher in patients with stroke/TIA manifestation before age 55 in men or 60 in women (3.1%, 0.6-5.6; and 13.1%, 8.3-17.9) and those with a prior history of cardiovascular disease (2.6%, 0.9-4.3; and 15.1%, 11.3-18.9). Of note, in two-thirds of our patients with probable/definite and possible FH, stroke or TIA was the initial clinical disease manifestation. The frequency of potential FH, based on clinical criteria, in patients with acute ischaemic stroke or TIA was 11.5% and that of probable/definite FH (1.3%) was similar to recently reported counts for patients with acute coronary syndrome (1.6%). FH screening using the DLCNA is feasible in clinical routine and should be considered as part of the usual diagnostic work-up.

Diagnosis of celiac disease and applicability of ESPGHAN guidelines in Mediterranean countries: a real life prospective study

BackgroundWe assessed how the diagnosis of Celiac Disease (CD) is made and how the new ESPGHAN guidelines can be applied in children from countries with different resources.MethodsA real life prospective study was performed in 14 centres of 13 different Mediterranean countries. Participants were asked to apply the usual diagnostic work-up for CD according to their diagnostic facilities.ResultsThere were 1974 patients enrolled in the study, mean age 4 years, 10 months; 865 male, 1109 female. CD was confirmed in 511 (25.9%) and was unconfirmed in 1391 (70.5%) patients; 14 patients were diagnosed as having CD according to the new ESPGHAN guidelines, 43 patients were classified as having potential CD. In all participating countries the diagnosis of CD relied on histology of duodenal biopsy; in 5 countries, HLA, and in one country endomysial antibodies (EMA) were not available. Symptoms did not add a significant increase to the pre-test probability of serological tests. The positive predictive value of tissue transglutaminase type 2 (tTG) antibodies performed with different kits but all corresponding to those recommended by ESPGHAN was 96.1% (95% CI 94–97.9%) in presence of tTG > 10xULN. In 135 patients with tTG >10xULN, HLA genotyping was performed and in all it was compatible with CD.ConclusionsThe results of our study show that CD diagnosis still relies on intestinal biopsy in the Mediterranean area. New ESPGHAN criteria are not applicable in 5 countries due to lack of resources needed to perform HLA genotyping and, in one country, EMA assay. Further simplification of the new ESPGHAN guidelines might be made according to what preliminarily the present results suggest if confirmed by new prospective studies.

A Structured Assessment to Decrease the Amount of Inconclusive Endometrial Biopsies in Women with Postmenopausal Bleeding.

Objective. To determine whether structured assessment of outpatient endometrial biopsies decreases the number of inconclusive samples. Design. Retrospective cohort study. Setting. Single hospital pathology laboratory. Population. Endometrial biopsy samples of 66 women with postmenopausal bleeding, collected during the usual diagnostic work-up and assessed as insufficient for a reliable histological diagnosis. Methods. Endometrial biopsy samples were requested from the pathology laboratories. The retrieved samples were systematically reassessed by a single pathologist specialized in gynecology. Main Outcome Measure. Disagreement between initial assessment and conclusion after structured reassessment. Results. We retrieved 36 of 66 endometrial biopsy samples from six different pathology laboratories. Structured reassessment of the retrieved samples by a single pathologist specialized in gynecology did not change the conclusion in 35 of the 36 samples. The remaining sample contained a large amount of endometrial tissue and the diagnosis at reassessment was endometrial hyperplasia without atypia. All other samples contained insufficient material for a reliable diagnosis. Conclusion. A structured reassessment of endometrial biopsies samples, which were classified as inconclusive due to insufficient material, did not change the conclusion. Although it might be helpful for pathologists to have diagnostic criteria for adequacy and/or inadequacy of an endometrial biopsy sample, the gain in efficiency is likely to be small.

Drugs in induction and treatment of idiopathic inflammatory myopathies.

Idiopathic inflammatory myopathies (IIM) are a rare disease; so far standardized therapy has not been adequately defined by national or international guidelines or recommendations. Corticosteroids are the mainstay of treatment, but these drugs are burdened by several side effects. Thus, additional treatment based on immunosuppressive agents, especially azathioprine, methotrexate, mycophenolate mofetil and cyclosporine, is often needed. This combinate approach both improves the disease response and allows reduction of the dosage of corticosteroids, decreasing the risk of steroid-related long-term complications. Biological agents, particularly B cell depleting agent, are emergent therapeutic tools for refractory cases. Notably, drugs currently used for the therapy of IIM or other rheumatologic and non-rheumatologic conditions can induce myopathy. Drug-induced myopathies represent a considerable part of the complex topic of muscular disorders and should be always considered in the usual diagnostic work-up of a subject with muscle disease. Several mechanisms have been advocated to explain muscular damage induced by a number of drugs and, although a recovery after drug removal is usually observed, severe or persistent myopathy may be observed following the administration of some drugs, particularly in subjects with genetic predisposition. In this review the traditional and novel therapeutic approaches for patients with IIM, particularly biologics, will be discussed and an overview on drug-induced myopathies will also be provided.

Management of male lower urinary tract symptoms suggestive of benign prostatic hyperplasia by general practitioners in Jakarta.

Purpose:This study was performed to describe and evaluate the management of male lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) by general practitioners (GPs) in Jakarta.Methods:This observational cross-sectional study was peformed between January 2013 and August 2013 in Jakarta. We developed a questionnaire consisting of 10 questions describing the management of male LUTS suggestive of BPH by GPs in their daily practice in the previous month. We collected questionnaires from 200 GPs participating in 4 urology symposiums held in Cipto Mangunkusumo Hospital, Jakarta.Results:Most GPs were aged between 25 and 35 years (71.5%) and had worked for more than 1 year (87.5%). One to 5 cases of male LUTS suggestive of BPH were treated by 81% of GPs each month. At diagnosis, the most common symptoms found were urinary retention (55.5%), frequency (48%), and nocturia (45%). The usual diagnostic workup included digital rectal examination (65%), scoring system (44%), measurement of prostate-specific antigen (PSA) level (23.5%), and renal function assessment (20%). Most GPs referred their male patients with LUTS suggestive of BPH to a urologist (59.5%) and 46.5% of GPs prescribed drugs as an initial therapy. Alpha-adrenergic antagonist monotherapy (71.5%) was the most common drug prescribed. Combination therapy with α-adrenergic antagonists and 5α-reductase inhibitors was not routinely prescribed (13%). Thirty-eight percent of GPs referred their patients when recurrent urinary retention was present and 33% when complications were present.Conclusions:Our study provides evidence that the management of male LUTS suggestive of BPH by GPs in Jakarta suggests referral in part to available guidelines in terms of diagnostic methods and initial therapy. However, several aspects of the guidelines, such as PSA level measurement, renal function assessment, urinalysis, ultrasound examination, and prescription of combination therapies, are still infrequently performed.

Routine vaginoscopic office hysteroscopy in modern infertility work-up: a randomized controlled trial

This study aims to estimate the safety, efficacy, and patient acceptability of adding vaginoscopic office hysteroscopy (VOH) to the routine infertility diagnostic work-up for evaluation of the endometrial cavity. This study is a prospective comparative diagnostic trial. This study was conducted in a tertiary care referral facility and university hospital. This study comprised a total of 156 infertile patients scheduled for laparoscopy. Seventy-eight patients had VOH on one stop bases in addition to the usual infertility work-up and were assigned as group B while a similar number was examined by the usual diagnostic work-up and assigned as group A. The main outcome measure is the diagnostic accuracy of VOH alone in comparison to hysterosalpingography (HSG) and diagnostic laparoscopy (DL) and assessment of combined VOH and HSG in diagnosing intrauterine abnormalities. There was insignificant difference between both groups regarding socio-demographic and HSG data. Abnormal DL findings were more significant in group A. VOH detected 50 % abnormal endometrial cavity in group B with a significant superiority over HSG. There was a high percentage of agreement in the diagnosis of uterine abnormalities between HSG and VOH (96 %). Generally, VOH was an acceptable procedure with mild pain and feasible in most cases. Adding VOH to the routine diagnostic work-up of infertile couples prior to laparoscopy seems to be a feasible, safe, simple, tolerable, and quick outpatient procedure. It can diagnose intrauterine abnormalities in about a quarter of infertile women with normal HSG. VOH has an additional value to HSG and DL in diagnosing uterine. Nevertheless, whether its use would increase pregnancy rate among infertile women requires a further longitudinal comparative study.

Combined use of exercise electrocardiography, coronary calcium score and cardiac CT angiography for the prediction of major cardiovascular events in patients presenting with stable chest pain

BackgroundThe usual diagnostic work-up of chest pain patients includes clinical risk profiling and exercise-ECG, possibly followed by additional tests. Recently cardiac computed tomographic angiography (CCTA) has been employed. We evaluated the prognostic value of the combined use of exercise-ECG and CCTA for the development of cardiovascular endpoints. MethodsIn 283 patients (143 male, mean age 54±10years) with intermediate pre-test probability for coronary artery disease presenting with stable chest pain, exercise-ECG, CCTA and calcium score were performed. Patients were followed-up for combined endpoint of acute coronary syndrome (ACS) and revascularization. ResultsAfter a median follow-up of 769days (interquartile range 644–1007), 6 ACS and 9 revascularizations were recorded. A positive exercise-ECG predicted for the combined endpoint, [hazard ratio (HR) 5.14 (95% confidence interval (CI) 1.64–16.13), p=0.005], as well as a positive calcium score [HR 4.59 (95% CI 1.30–16.28), p=0.02] and a ≥50% stenosis on CCTA [HR 45.82 (95% CI 6.02–348.54), p<0.001]. ROC-analysis showed an area under the curve (AUC) of 0.79 (95% CI 0.67–0.90) for exercise-ECG, which increased significantly when CCTA was added: 0.91 (95% CI; 0.86–0.97; p=0.006). Multivariable Cox regression showed exercise-ECG predicted independently [HR 3.6, (95% CI 1.1–11.2), p=0.03], as well as CCTA [HR 31.4 (95% CI 4.0–246.6), p=0.001], but not calcium score [HR 0.6 (95% CI 0.2–2.3), p=0.5]. ConclusionsThe combined subsequent use of exercise-ECG for functional information and CCTA for anatomical information provides a high diagnostic yield in stable chest pain patients with an intermediate pre-test probability for coronary artery disease.

Breast metastases in children and adolescents with rhabdomyosarcoma: Experience of the Italian soft tissue sarcoma committee

Breast metastasis from rhabdomyosarcoma (RMS) is an uncommon event but may be problematic in treatment decision-making. Aim of the study was to evaluate clinical characteristics, treatment, and subsequent outcome, of patients with RMS metastasis in the breast, enrolled in four consecutive Associazione Italiana di Ematologia ed Oncologia Pediatrica (AIEOP) Soft Tissue Sarcoma Committee protocols during the last 20 years, in order to obtain information to establish a more adequate diagnostic and therapeutic approach. Data were derived from the AIEOP STSC database and reviewed for the purpose of this study. From 1988 to 2008, among 189 patients with metastatic RMS, we identified 7 (3.7%) patients with RMS with breast involvement at diagnosis. All patients were females, aged 13-17 years with alveolar histology and multiple metastasis sites (2-5). The primary tumor was located in the extremities in 3/7 patients. In spite of intensive treatment no patient survived. The cause of treatment failure was distant relapse in six patients, including two on the mammary region. Treatment data analysis revealed that local measures to control breast lesions were used in only two patients. Our data suggest that investigations of the mammary region should be part of the usual diagnostic workup in adolescent girls with alveolar RMS, especially if the primary tumor arises in the extremities. New and more effective strategies are needed to improve the outcome of these patients including aggressive local measures to control breast disease.

The ImmunoCAP® Rapid Wheeze/Rhinitis Child test is useful in the initial allergy diagnosis of children with respiratory symptoms

Recurrent upper or lower respiratory symptoms, possibly allergy-related, are very frequent in childhood. It is therefore important that physicians involved in the primary care of these children have an accurate initial diagnostic tool available. In this study, we investigated the value of an in vitro diagnostic device testing 10 common allergens, the ImmunoCAP Rapid Wheeze/Rhinitis Child, for the primary evaluation of allergy. Children with non-infectious upper or lower respiratory symptoms possibly related to allergy were recruited in the primary health care setting of private practices of physician trained in immunology/allergology. The investigators carried out their usual diagnostic work-up including IgE tests, and the ImmunoCAP Rapid test was performed with capillary whole blood in a blinded way to the investigator. The investigators' conclusions on major triggering allergens were compared to the ImmunoCAP Rapid test results. In the whole patient population (n = 185), the sensitivity of the ImmunoCAP Rapid test for unveiling allergic disease was 92% (95% CI: 86-96%) and the specificity 97% (95% CI: 86-100%). Current guidelines for allergy diagnosis suggest screening children with recurrent, moderate/severe diseases for allergies. For children with asthma falling into these categories, sensitivity was 100% (95% CI: 88-100%) and specificity 100% (95% CI: 69-100%); for children with moderate and severe rhinitis sensitivity was 93% (95% CI: 86-97%) and the specificity 100% (95% CI: 79-100%). The ImmunoCAP Rapid test is an accurate test, in particular with regard to high specificity, for diagnosing allergy in children with recurrent respiratory diseases in primary care settings.

Secondary “hypnic headache-

Hypnic headache is a rare form of primary headache with attacks occurring exclusively with sleep. As it is typical of the elderly, a wide range of alternative diagnosis must be considered. We present a case report of a 54-year-old woman with unsuspected secondary hypnic headache that was relieved by anti-hypertensive therapy. We reviewed the literature to evaluate the usual diagnostic workup performed in hypnic headache patients. We suggest that 24 h ambulatory blood pressure monitoring may be included in the evaluation of nocturnal headache complaints especially in the elderly, in whom essential hypertension is a very frequent comorbidity.

New diagnostic and prognostic markers of ventilator-associated pneumonia

The purpose of this review is to analyze the potential advantages and drawbacks of using biomarkers of bacterial infection for the diagnosis and prognosis of ventilator-associated pneumonia. Whereas procalcitonin and soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) have both greater diagnostic accuracies than most commonly used clinical parameters and other biomarkers of infection, such as C-reactive protein, they can be increased in noninfectious conditions or remain low in patients with true infection. Furthermore, these assays cannot determine the causative organisms and associated patterns of antibiotic susceptibility. Procalcitonin and sTREM-1 should be used only as a complementary tool, to reinforce the usual diagnostic work-up. However, serial serum procalcitonin and sTREM-1 measurements may provide an opportunity to change the treatment early in the course of patients with ventilator-associated pneumonia, either to intensify treatment when their levels stay high, or to avoid unnecessary prolonged courses of antibiotics when their levels rapidly decrease. Whether procalcitonin and/or sTREM-1 guidance can reduce antibiotic use in such a setting will require additional studies, but such a strategy appears promising.

Limitations of magnetic resonance imaging in the evaluation of perineural tumor spread causing facial nerve paralysis.

To present and discuss the clinical presentation and treatment in patients with long-duration unilateral facial paralysis and normal magnetic resonance imaging (MRI) findings. Case series. Ear, nose, and throat department of the University of Cologne, Cologne, Germany. A total of 486 patients with unilateral facial paralysis who were treated from 1986 to 1998. Besides the usual diagnostic workup, a complete electrophysiological evaluation, including investigations such as needle electromyography and neuromyography (also known as electroneurography), of the facial nerve was performed at repeated intervals. In 19 patients, a malignant tumor was delineated with ultrasonography or MRI. In 8 of these patients, the initially performed MRI did not detect any parotid gland lesion causing the paralysis, whereas long duration of the paralysis and electroneurography indicated malignancy. Exploration surgery was performed as total parotidectomy in these 8 patients and malignant parotid gland tumors were proved in all 8 patients. Individuals with facial nerve paralysis without any signs of regeneration 6 months after the onset of paralysis and/or persistent electrophysiological evidence of ongoing neuronal degeneration should undergo surgical exploration of the parotid gland and facial nerve, even if MRI studies show no tumoral lesion.