Milford Hospital

Background: Inhaled medications delivered via nebulizer are less dependent upon patient effort and technique when compared to pressurized metered dose inhalers (pMDI) and are often used in acute care settings for this reason. Because pMDIs can deliver medications so quickly, design improvements of standard jet nebulizers have been made to create high efficiency nebulizers that include the breath enhancement (BE), which utilizes entrained flow to make more drug available for inhalation, and the breath actuated (BA) feature which only emits medication upon inhalation. Methods: Three different nebulizers were evaluated (no. = 5); one BA/BE (AeroEclipse II), one BE only (TurboMist), and one constant output SJN (Misty Max10). Each nebulizer was loaded with 3 mL of 2.5 mg albuterol sulfate solution with the gas flow set to deliver 8 L/min. The nebulizer was connected to a spontaneous breathing servo lung model (ASL 5000) with the following settings: VT 500 mL, frequency 10, and I:E ratio of 1:2. A filter was placed between the mouthpiece of the nebulizer and the test lung to capture inspired aerosol. Gas flow was stopped every minute and the filter exchanged for a fresh one. Nebulizer output was determined by rinsing the filter medium in methanol and then placing the filtrate into HPLC. Parallel measurements of fine droplet fraction (FDF < 4.7 μm) were made using a Spraytec laser diffractometer. Fine droplet mass was determined as the product of recovered mass and FDF < 4.7 μm. Results: The run length was determined by the nebulizer with the shortest run time, TurboMist approximately 4 min. All Fine Droplet Mass (FDM) or dosing in the respirable range of 1-5 µm was reported at the 4-min mark though some nebulizers had more medication left in the cup. Post hoc analysis was performed using Tukey’s honest significant difference; AeroEclipse II FDM 305.2 ± 73.3 differed from the FDM of both the TurboMist (202.5 ± 11.9) and Misty Max (180.3 ± 16.8), P < .01. The difference in FDM between the TurboMist and the Misty Max was P < .01 (Fig 1). Conclusions: Being able to provide adequate medication delivery over a shorter period is desirable, first to elicit relief for the patient, but also to promote efficiency in workflow. Even though the AeroEclipse II still had medication left to nebulize, performing a 4 min timed dose still allowed for a 33% increase in respirable dose over TurboMist and a 41% increase over Misty Max 10 allowing the user to get more medication into the distal airways in a short period of time.Table 1: Fine droplet mass by nebulizer over four minutesFigure 1: Fraction of delivered output mass with particles < 4.7 μm.

Artificial Intelligence is already having a significant impact on software development, so we would be basking in our own hubris to think that it won’t impact management. I didn’t have to wonder how, since ChatGPT was more than willing to give me the answer.

Both SARS-CoV-2 and SARS-CoV initially appeared in China and spread to other parts of the world. SARS-CoV-2 has generated a COVID-19 pandemic causing more than 6 million human deaths worldwide while the SARS outbreak quickly ended in six months with a global total of 774 reported deaths. One of the factors contributing to this stunning difference in the outcome between these two outbreaks is the inaccuracy of the RT-qPCR tests for SARS-CoV-2, which generated a large number of false-negative and false-positive test results that have misled patient management and public health policy-makers. This article presented Sanger sequencing evidence to show that the RT-PCR diagnostic protocol established in 2003 for SARS-CoV can in fact detect SARS-CoV-2 accurately due to the well-known nonspecific PCR amplification of DNAs with similar sequences. Using nested RT-PCR followed by Sanger sequencing to retest 50 patient samples collected in January, 2022 and sold as RT-qPCR positive reference confirmed 21 (42%) were false-positive. Although the other 29 positive isolates were categorized as Omicron variant by partial sequencing of the N gene, and the RBD and the NTD of the S gene, 9 (31%) showed focal to complete sequencing failure in the S gene segments due to multi-allelic SNPs. During the course of the study, an Omicron variant isolate containing a BA.1 NTD and a BA.2 RBD in its S gene was also detected. Routine partial S gene sequencing of all PCR-positive samples can timely discover multi-allelic SNPs and viral recombination in the circulating variants for investigation of their impacts on vaccine efficacies, therapeutics and diagnostics.

Background: The widespread use of hemodialysis to prolong life of end-stage renal disease (ESRD) patients has been a remarkable achievement, preventing death from uremia in these patients. The aim of the study was to find out the outcomes of haemodialysis patients with end-stage renal disease (ESRD) in low Income County. Methods: A hospital based prospective observational study was performed in the of Department of Nephrology, Shaheed Suhrawardy Medical College. Total 189 patients who stated dialysis during study period were included. All patients were monthly followed up and appropriate investigation done. All data recorded in a case record form. Study protocol approved by Ethical committeeof institute. Data analyzed in SPSS software version 25. Results: Among 189 ESRD patients on MHD selected with mean age 49.16 years (15-82), male was 60.3% and female 39.7%.Eighty eight 46.5% patient died and 39.15%(74) patient discontinue dialysis due to lack of financial support or helping assistant or social support. Three (1.6%) patients underwent renal transplantation and five patients (2.6%) transfer to other dialysis center. Average life span in dialysis 256 day (16-786 days). Most of the paints was on twice weekly dialysis 84%. Vascular access of stating dialysis was 73.8% by catheter and only 32.2% stated with AV fistula. Conclusion: A large group of patients leave dialysis due to financial or helping personal or social supportwithin 3-4 months of stating dialysis. A significant number of patients died due to multiple risk factors within 8-9 months. Identification of risk factors for early mortalityis essential and appropriatemeasure should take to prevent discontinuation at community and national level. Bangladesh J Medicine July 2022; 33(1) : 52-56

As SARS-CoV-2 continues to spread among human populations, genetic changes occur and accumulate in the circulating virus. Some of these genetic changes have caused amino acid mutations, including deletions, which may have potential impact on critical SARS-CoV-2 countermeasures, including vaccines, therapeutics, and diagnostics. Considerable efforts have been made to categorize the amino acid mutations of the angiotensin-converting enzyme 2 (ACE2) receptor binding domain (RBD) of the spike (S) protein along with certain mutations in other regions within the S protein as specific variants in an attempt to study the relationship between these mutations and the biological behavior of the virus. However, the currently used whole genome sequencing surveillance technologies can test only a small fraction of the positive specimens with high viral loads and often generate uncertainties in nucleic acid sequencing that needs additional verification for precision determination of mutations. This article introduces a generic protocol to routinely sequence a 437-bp nested RT-PCR cDNA amplicon of the ACE2 RBD and a 490-bp nested RT-PCR cDNA amplicon of the N-terminal domain (NTD) of the S gene for detection of the amino acid mutations needed for accurate determination of all variants of concern and variants of interest according to the definitions published by the U.S. Centers for Disease Control and Prevention. This protocol was able to amplify both nucleic acid targets into cDNA amplicons to be used as templates for Sanger sequencing on all 16 clinical specimens that were positive for SARS-CoV-2.

Necrotizing Sarcoid Granulomatosis is a rare disease entity where granulomas are accompanied by variable amounts of necrosis and granulomatous vasculitis.We present a 54-year-old man with Necrotizing Sarcoid Granulomatosis.A 54-year-old African American man was referred to our clinic on account of weight loss of 80 pounds over a period of a year and an abnormal chest Computerized Tomography scan.He had an extensive work up including upper and lower endoscopies which were non diagnostic.Computed Tomography of his chest revealed an 18 mm nodule in his left lower lobe, and multiple enlarged mediastinal necrotic lymph nodes.He denied a history of fevers, night sweats, hemoptysis, dyspnea, coughing, visual disturbances, or chest pain.Endobronchial ultrasound with transbronchial needle aspiration of station 4R showed findings of necrotizing granulomatous inflammation.Stains for acid fast bacilli, fungi and bacteria were negative.QuantiFERON gold testing and a vasculitis work-up were negative.He subsequently underwent mediastinoscopy with excision of lymph nodes at station 4R, station 7, and station 4L.Histopathology showed extensive granulomatous inflammation, necrosis with no evidence of malignant cells.AFB, bacterial and fungal cultures were negative.The patient was presented at the institutional tumor board and the consensus was that his left lower lobe lesion was related to Sarcoidosis given necrotizing granulomatous inflammation noted on EBUS and mediastinoscopy.The decision was made to hold off initiation of treatment of Sarcoidosis as he had no pulmonary symptoms and PFTs had demonstrated normal spirometry.He is currently being followed on an outpatient basis by the pulmonary and thoracic surgery services.Necrotizing sarcoid granulomatosis is a rare disease and was first described by Liebow in 1973.The median age of diagnosis is 42 years with a female preponderance.It may present with a cough, dyspnea, night sweats, weight loss or incidentally as an asymptomatic mass like solitary lesion on radiography like in our patient, although imaging revealing multiple pulmonary nodules is more common.This case highlights including this rare presentation of Sarcoidosis in the differential for patients who demonstrate enlarged necrotic mediastinal lymph nodes on imaging.

BACKGROUND Objective structured clinical examinations (OSCEs) are a useful method to evaluate medical students’ performance in the clerkship years. OSCEs are designed to assess skills and knowledge in a standardized clinical setting and through use of a preset standard grading sheet, so that clinical knowledge can be evaluated at a high level and in a reproducible way. OBJECTIVE This study aimed to present our OSCE assessment tool designed specifically for radiology clerkship medical students, which we called the objective structured radiology examination (OSRE), with the intent to advance the assessment of clerkship medical students by providing an objective, structured, reproducible, and low-cost method to evaluate medical students’ radiology knowledge and the reproducibility of this assessment tool. METHODS We designed 9 different OSRE cases for radiology clerkship classes with participating third- and fourth-year medical students. Each examination comprises 1 to 3 images, a clinical scenario, and structured questions, along with a standardized scoring sheet that allows for an objective and low-cost assessment. Each medical student completed 3 of 9 random examination cases during their rotation. To evaluate for reproducibility of our scoring sheet assessment tool, we used 5 examiners to grade the same students. Reproducibility for each case and consistency for each grader were assessed with a two-way mixed effects intraclass correlation coefficient (ICC). An ICC below 0.4 was deemed poor to fair, an ICC of 0.41 to 0.60 was moderate, an ICC of 0.6 to 0.8 was substantial, and an ICC greater than 0.8 was almost perfect. We also assessed the correlation of scores and the students’ clinical experience with a linear regression model and compared mean grades between third- and fourth-year students. RESULTS A total of 181 students (156 third- and 25 fourth-year students) were included in the study for a full academic year. Moreover, 6 of 9 cases demonstrated average ICCs more than 0.6 (substantial correlation), and the average ICCs ranged from 0.36 to 0.80 (&lt;i&gt;P&lt;/i&gt;&amp;lt;.001 for all the cases). The average ICC for each grader was more than 0.60 (substantial correlation). The average grade among the third-year students was 11.9 (SD 4.9), compared with 12.8 (SD 5) among the fourth-year students (&lt;i&gt;P&lt;/i&gt;=.005). There was no correlation between clinical experience and OSRE grade (−0.02; &lt;i&gt;P&lt;/i&gt;=.48), adjusting for the medical school year. CONCLUSIONS Our OSRE is a reproducible assessment tool with most of our OSRE cases showing substantial correlation, except for 3 cases. No expertise in radiology is needed to grade these examinations using our scoring sheet. There was no correlation between scores and the clinical experience of the medical students tested.