Revisiting BPPV: Incidence and Behavior of Atypical Variants

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Objectives: Typical BPPV forms are widespread and easily diagnosed disorders. However, some forms of labyrinthine lithiasis can differ from the typical BPPV paradigm, showing their own signs and symptoms and resulting in variable therapeutic responses. The aim of this retrospective study is to describe the incidence of the so-called atypical forms compared to the more common BPPV, describing their clinical behavior. Methods: This retrospective study analyzed clinical and instrumental data of 139 patients evaluated over a 12-month period at a referral center. Patients were divided into two groups. The first group (Group A) included patients with so-called “typical” and unilateral labyrintholithiasis, while the second group (Group B) included patients with so-called “atypical” forms. Results: Based on clinical characteristics, 82 patients were assigned to group A while 57 (51.01%) to group B. In group A, resolution of the clinical picture required fewer sessions and a smaller number of therapeutic maneuvers than in group B (p < 0.001). Furthermore, in group A, resolution of symptoms was observed immediately after one of the therapeutic maneuvers performed in 74.07% of cases, while in group B, resolution of the clinical picture was observed during one of the follow-up visits in 39.66% of cases (p < 0.001). Conclusions: Although considered rare, “atypical” forms have an increased prevalence in tertiary centers. The location of the canaliths within the labyrinth can be hypothesized based on the pattern of nystagmus, which serves as a guide for treatment.

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The patients with sudden sensorineural hearing loss (SSNHL) may complain of vertigo. Although there have been many reports on SSNHL with vertigo (SSNHL_V), changes in the pattern of nystagmus have not been studied as yet. This study is a retrospective study and aims to investigate the characteristic changes in type of nystagmus and clinical features in patients with SSNHL_V who experienced a change in their nystagmus pattern during follow-up. Among 50 patients with SSNHL_V between January 2012 and December 2015, we identified 15 patients with SSNHL_V whose pattern of nystagmus changed. Initial nystagmus was classified into 5 subgroups: paretic type, irritative type, persistent geotropic direction-changing positional nystagmus (PG-DCPN), persistent apogeotropic direction-changing positional nystagmus (PA-DCPN), and posterior semicircular canal benign paroxysmal positional vertigo. The most common pattern of initial nystagmus was PG-DCPN (n = 7). The change of initial nystagmus pattern occurred on day 2 to 75 from symptom onset, and 2 (of 15) patients showed further conversion. The most common pattern of final nystagmus was PA-DCPN (n = 9). Hearing improvement after treatment was not significantly different (P = .59) between SSNHL_V patients with nystagmus change (25 ± 17 dB, n = 15) and those without nystagmus change (28 ± 18 dB, n = 35). In conclusion, clinician's attention is required in evaluating the vertigo symptom in patients with SSNHL_V because the initial patterns of nystagmus can be converted to another type of nystagmus. The presence of nystagmus change during follow-up may not be a prognosticator for hearing recovery in patients with SSNHL_V.

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Candida urinary tract infections (UTIs) are common nosocomial infections among critically ill patients hospitalized in pediatric intensive care Units (PICU). We aimed to report outcomes of critically ill pediatric patients who received micafungin for hospital acquired Candida UTIs. We analyzed treatment success rates and success rates among different Candida species. This retrospective cohort study included patients who received micafungin for Candida UTI as first choice in our PICU between January 2017 and July 2018. Data, including demographic and clinical features, were retrospectively collected from medical files of the patients. Treatment efficacy was defined as resolution of clinical symptoms and a negative culture for Candida at day 14 after initiation of micafungin treatment. Twenty-four pediatric patients (median age 5.72 years, range, 2 months-16 years) were included in the present study. Fourteen (58.3%) patients had urinary catheters at the time of Candida isolation. Resolution of symptoms and a negative culture at day 3 of micafungin treatment were achieved in 17 (70.8%) and 14 (58.3%) patients, respectively. Moreover, 19 (79.2%) patients had a normal urine analysis and negative culture 14 days after initiation of micafungin treatment. Treatment responses did not statistically differ between Candida species. Micafungin is safe and efficacious in critically ill pediatric patients with Candida UTIs. Its efficacy in our pediatric population was as comparable to that observed in adult studies, therefore, it should be considered as an effective therapeutic option in Candida UTIs of critically ill pediatric patients.

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Non-cystic fibrosis bronchiectasis (NCFB) remains underdiagnosed in pediatric populations, particularly in the Middle East. To characterize the high-resolution computed tomography (HRCT) features of NCFB in pediatric patients, including extent, morphological subtype, and lobar distribution, and to evaluate their associations with underlying clinical diagnoses at a tertiary care center in Oman. We conducted a retrospective cross-sectional study at Sultan Qaboos University Hospital (SQUH), a tertiary center in Oman, reviewing pediatric patients ≤18 years diagnosed with NCFB between January 2000 and December 2022. High-resolution computed tomography (HRCT) reports prepared by pediatric radiologists were reviewed. Data on clinical features, radiological patterns, lobar involvement, and etiologies were analyzed descriptively usingIBM SPSS Statistics for Macintosh, Version 19.0 (IBM Corp.,Armonk, NY). Of the 150 patients reviewed, 61 met the inclusion criteria. The mean age at diagnosis was 7.3 years, with 35 (57.4%) being male. Diffuse bronchiectasis was predominant, observed in 48 patients (78.7%), and involved more than two lobes in 40 cases (65.6%). The left lower lobe was the most frequently affected, seen in 13 patients (21.6%). Cylindrical bronchiectasis was present in all patients, while cystic in 25 patients (41.0%) and varicose in 19 patients (31.1%) forms were more common in those with systemic disorders, such as primary immunodeficiency (PID, 18 patients; 37.5%) and primary ciliary dyskinesia (PCD, 8 patients; 16.7%). Patients diagnosed at age ≥5 years had a significantly higher prevalence of diffuse disease. HRCT is a crucial diagnostic tool for pediatric NCFB, particularly in children with recurrent infections or systemic comorbidities, such as PID or PCD. Early imaging may prevent irreversible damage and guide targeted treatment. Establishing national guidelines for pediatric chest CT utilization and incorporating multidisciplinary assessments may improve diagnostic timeliness and outcomes.

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Clinical Epidemiology, Etiology, and Outcomes of Upper Gastrointestinal Bleeding at a Tertiary Center in Bahrain: A Retrospective Study.
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Background Upper gastrointestinal bleeding (UGIB) is one of the most common major medical emergencies. This study sought to determine the epidemiology, clinical characteristics, and outcomes of UGIB in the largest major tertiary care center in Bahrain, compared to regional and international cohorts. Methods We conducted a retrospective cohort study of all patients diagnosed with UGIB between April 2021 and April 2022 in Salmaniya Medical Complex, Bahrain's largest tertiary-level public hospital. The primary outcomes measured included 30-day mortality rates and one-year readmission rates. Other variables collected included demographic factors, baseline characteristics, comorbidities, symptomatology, endoscopic findings, and etiologies of the bleeding. Results A total of 212 patients with UGIB were included. The mean age of the patients was 56.7 ± 19.1 years. More than 50% of patients with UGIB presented with melena and symptoms of anemia. The most common cause of UGIB in Bahrain was duodenal ulcers, which were found in 75 patients (37.7%). One in two patients with UGIB required packed red blood cells, while fresh-frozen plasma and platelet transfusions were reserved for severe cases. The readmission rate within one year of discharge (14.2%) was associated with smoking, cardiac history, melena, gastric malignancy, and rescope during admission. The 30-day mortality (15.6%) was associated with comorbidities of chronic kidney disease, cerebrovascular disease, and hematochezia on presentation. Conclusion Overall, the mortality rate of UGIB in Bahrain is higher than in countries in the region, the UK, and the US, signaling potential gaps in management and a reflection of a more complex patient population.

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Superior semicircular canal dehiscence presenting with recurrent positional vertigo.
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A 55-year-old man presented to a neuro-otology clinic with a 9-month history of episodic spinning vertigo lasting seconds, triggered by bending forward, lying flat, laughing, or exercising with weights. He noticed fullness in the right ear and unpleasant loudness of his own voice (autophony), without hearing loss or tinnitus. Examination while asymptomatic showed no spontaneous, gaze-evoked or positional nystagmus. Benign paroxysmal positional vertigo (BPPV) was first considered, and he was offered a pair of home video goggles to self-record episodes.1 Three months later, he returned, reporting frequent positional vertigo. Home videos showed paroxysmal rightward torsional down-beating nystagmus on lying supine from the sitting position (latency: 7.2 seconds, duration: 9.4 seconds, peak slow-phase velocity: 10.3°/s; video 1, figure 1, A and B). Sitting up did not produce nystagmus reversal. We hypothesized that this pattern of nystagmus could be provoked by right superior canal (SC) BPPV or unplugging of an SC dehiscence. However, multiple repositioning maneuvers for right SC BPPV/left posterior canal BPPV were conducted without symptom resolution.

  • Research Article
  • Cite Count Icon 3
  • 10.1186/s13019-023-02416-w
Demographic, clinical, and paraclinical features of patients operated with the diagnosis of acute descending necrotizing mediastinitis: a retrospective study in Southern Iran
  • Dec 8, 2023
  • Journal of Cardiothoracic Surgery
  • Keivan Ranjbar + 9 more

IntroductionDescending necrotizing mediastinitis (DNM) is a type of acute mediastinitis that is rarely reported but is regarded as a fatal disease despite improvements in technological methods and antibiotic therapies. We aimed to determine the demographic, clinical, and paraclinical features of patients diagnosed with acute DNM.MethodsIn this retrospective study, patients’ hospital records with a diagnosis of DNM admitted to the Namazi hospital in southern Iran during 18 years (2002–2019) were reviewed. Demographic and clinical features were recorded and subsequently analyzed via SPSS 22.ResultsOut of 67 mediastinitis patients, 25 (37.3%) were diagnosed as DNM with an average age of 37.2 ± 16.7 years, and 68% were male. Regarding etiology, 52.0% were due to neck infection. Based on the technique of surgery, 52% of the patients underwent the combined method, which was mostly among type I and IIA DNM, while thoracotomy was mostly performed on type IIB DNM (P = 0.08). Based on the incision, type IIA and IIB had the highest frequency of thoracotomy and cervicothoracic incisions (P = 0.02 and 0.002). Puss discharge was significantly lower in type I DNM (P = 0.01). Based on the presenting symptoms of our patients, the majority (72.0%) had a chief complaint of neck pain, followed by chills and fever (48%). There were no reports of mortality during our short-term follow-up.ConclusionWe report one of the largest retrospective studies of DNM patients in our referral center, with a high prevalence of the disease among younger populations, especially under 40 years. The method of treatment should be chosen based on the extent of infection and can be limited to neck exploration in upper mediastinal infections, though thoracic or combined approach in more broad infections.

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