Clinical implication of recent randomized control trial in primary angle-closure disease management.

Blindness due to primary angle-closure glaucoma (PACG) can be reduced significantly if the ongoing angle-closure process is arrested at an early stage. Various treatments such as laser peripheral iridotomy (LPI), iridoplasty, and clear lens extraction (CLE) have been advocated as first-line therapy for primary angle-closure (PAC), PACG, and high-risk cases of primary angle-closure suspect (PACS). EAGLE study, propagated the effectiveness of CLE over LPI for the management of primary angle closure and have sparked controversy regarding the role of LPI as a first line procedure. Randomized controlled trials (RCT), systematic reviews, and meta-analyses of RCTs done on the same question provide us with a solid base for creating guidelines/modules for our day-to-day clinical practice. A systematic review was conducted, searching several databases, including PubMed, Cochrane Library, EMBASE, and ClinicalTrials.gov, for the last 16 years (January 2005-December 2021) for RCTs with data published related to primary angle-closure disease (PACD). The search strategy included the following terms: "Primary Angle Closure disease," "Primary Angle Closure Glaucoma," "Primary Angle Closure," "Primary Angle Closure Suspect," "clear lens extraction," "laser iridotomy," "laser peripheral iridotomy," "argon laser peripheral iridoplasty," "selective laser trabeculoplasty," "trabeculectomy," "randomized control trial," and "meta-analysis of randomized control trial." In this review, we will discuss recently published RCTs (within the last 16 years) for the management of PACD and their clinical implications in day-to-day practice.

Retinal nerve fiber layer thickness in amblyopia.

Purpose: To report retinal nerve fiber layer thickness (RNFLT) in eyes with amblyopia compared with contralateral healthy eyes. Methods: In this cross-sectional study, we included patients with anisometropic amblyopia, strabismic amblyopia, and mixed amblyopia. All subjects underwent complete ophthalmic examination, including RNFLT measurement with time-domain OCT (Stratus OCT) and scanning laser polarimeter (GDX VCC). A paired "t" test was used to compare average and quadrant-wise RNFL thickness between the amblyopic and contralateral normal eyes. In addition, an analysis of variance test was used to compare various RNFL thickness parameters between the three groups. Results: A total of 33 eyes of 33 subjects with anisometropic amblyopia, 20 eyes of 20 subjects with strabismic amblyopia, and 38 eyes of 38 subjects with mixed amblyopia were included. In the anisometropic amblyopia group, the average RNFLT in the amblyopic eye was 98.2 µm and 99.8 µm in the fellow normal eye (P = 0.5), the total foveal thickness was 152.82 µm (26.78) in the anisometropic eye and 150.42 µm (23.84) in the fellow eye (P = 0.38). The difference between amblyopic and contralateral normal eye for RNFL and macular parameters was statistically insignificant in all three groups. The RNFL thickness in four quadrants was similar in the amblyopic and non-amblyopic eye between all three groups and statistically non-significant. Conclusion: Our study showed that RNFL thickness was similar in amblyopic and non-amblyopic eyes between all three amblyopia groups.

Severe hyponatraemia in two patients with breast cancer caused by low-dose cyclophosphamide and precipitated by aprepitant.

Two postmenopausal women with breast cancer developed acute confusion and seizures, less than 24 hours after the first cycle of neoadjuvant chemotherapy with fluorouracil, epirubicin and low-dose cyclophosphamide. They were found to have severe, life-threatening hyponatraemia with sodium levels of 113 and 115 mEq/L, respectively. Both women made a full recovery within 24 hours of admission with slow correction of sodium levels. Following investigational workup, the most likely diagnosis was cyclophosphamide-associated syndrome of inappropriate antidiuretic hormone secretion (SIADH). Aprepitant - a commonly used antiemetic and moderate cytochromeP450 3A4 inhibitor was identified as the precipitating factor. Aprepitant was discontinued and both women were successfully re-challenged with full dose cyclophosphamide in an outpatient setting with no subsequent adverse events. This is a typical case of a rare cause of a common medical problem. A systematic approach to diagnosis and treatment of hyponatraemia in an oncology patient requires awareness of toxicities of systemic anticancer agents.

Optic disc morphology in primary open-angle glaucoma versus primary angle-closure glaucoma in South India.

Purpose: The aim of this study was to investigate the optic disc morphology in primary angle-closure glaucoma (PACG) versus primary open-angle glaucoma (POAG) in South Indians. Methods: A total of 60 patients (60 eyes) with PACG and 52 patients (52 eyes) with POAG were included in a cross-sectional observational study. The glaucoma diagnosis was based on a glaucomatous appearance of the optic disc correlating with visual field defects. The glaucoma was graded as early, moderate, or severe, depending upon perimetric loss. All patients underwent an ophthalmic evaluation, including visual field examination and planimetric analysis of 30° stereoscopic color optic disc photographs. Results: The POAG and PACG groups did not differ significantly in a disc or rim area, rim width, and frequencies of disc hemorrhages or rim notches. However, early POAG group (n = 15) had a significantly deeper cup depth (P = 0.01), larger beta zone (P = 0.01), and a higher frequency of localized retinal nerve fiber layer (RNFL) defects (P = 0.02) than early PACG (n = 20). Conclusion: In the early stage of the disease, POAG compared to PACG may be characterized by deeper disc cupping, a larger beta zone of peripapillary atrophy, and a higher frequency of localized RNFL defects. Such differences in early glaucoma may suggest differences in pathophysiology in POAG and PACG.

An Interprofessional Team-Based Intervention to Address Barriers to Initiating Palliative Care in Pediatric Oncology: A Multiple-Method Evaluation of Feasibility, Acceptability, and Impact.

CONTEXT: Many children with advanced cancer are not referred to palliative care despite both professional recommendations to do so and bereaved parental preference for earlier support from sub-specialty palliative care. OBJECTIVES: To assess the feasibility, acceptability, and impact of an adaptive intervention to address individual and team-level barriers to specialty palliative care referrals. METHODS: A multiple-method approach assessed feasibility and acceptability among clinicians from pediatric oncology teams at a single institution. Quantitative measures of comfort with palliative care consultations, team cohesion, and team collaboration were conducted before and after the intervention. Number of palliative care consults were examined before, during, and after sessions. Intervention satisfaction surveys and qualitative interviews were conducted after the intervention. RESULTS: Twenty-six team members (90% of consented) attended at least one intervention session with 20 (69%) participants completing 75% or more sessions. The intervention was modified in response to participant feedback. After the intervention, participants reported greater team cohesion, comfort discussing palliative care consultation, team collaboration, process satisfaction, and decision satisfaction. Participants agreed that the training was useful, effective, helpful, and worthwhile, that they would use the skills, and that they would recommend the training to other providers. The numbers of palliative care consults increased before intervention sessions were conducted, but did not significantly change during or after the sessions. In the interviews, participants reported overall favorably regarding the intervention with some participants reporting changes in practice. CONCLUSION: An adaptive intervention to reduce barriers to initiating palliative care for pediatric oncology teams is feasible and acceptable.

Chemical disinfectants in ophthalmic practice.

The instrumentation used in ophthalmic clinics can be a source of epidemics in health care set up. Contact tonometry with Schiotz or Applanation tonometer is associated with nosocomial epidemic keratoconjunctivitis outbreaks. Recently identified SARS-CoV-2 (COVID -19) spreads mainly via the respiratory route and fomites and can transmit through other body fluids, including tear film. Various ophthalmic instruments can become a common source of spreading cross infections. Chemical disinfection is one of the most common methods employed to decontaminate instruments and environmental surfaces and prevent transmission of infectious pathogens to patients through medical and surgical instruments. Various chemical disinfectants are available with a varied spectrum to work on a different group of organisms. In this article, we briefly cover commonly used chemical disinfectants in ophthalmic practice like Alcohol (Ethyl Alcohol, Isopropyl Alcohol), Chlorine-based solution (mainly Sodium Hypochlorite), Glutaraldehyde, Hydrogen Peroxide, Formaldehyde, Iodophors, and Quaternary Ammonium Compounds.

Live streaming ward rounds using wearable technology to teach medical students: a pilot study.

Background: The COVID-19 pandemic resulted in a loss of clinical clerkship opportunities for medical students. To address this problem while maintaining patient safety, this pilot study explored the feasibility of using a wearable headset to live stream teaching ward rounds to remotely based medical students. Methods: Three live streamed teaching ward rounds were delivered to three groups of medical students (n=53) using the Microsoft HoloLens 2 device and Microsoft Teams software, and results pooled for analysis. Feedback was gathered from students and instructors using the evaluation of technology-enhanced learning materials (ETELM). Patient feedback was gathered using the Communication Assessment Tool to explore any impact on interpersonal communication. Results: The response rate for the ETELM-learner perceptions was 58% (31/53), 100% for the ETELM-instructor perceptions. Students strongly agreed that the overall quality of the teaching session and instructors was excellent. However, 32% experienced issues with audio or video quality and one remote student reported cyber sickness. The statement 'educational activities encouraged engagement with session materials/content' returned the most varied response. Instructors reported technological problems with delivery while using the HoloLens 2 device and environmental noise in the ward was a disruptive factor. Preparation and skilled facilitation were key to delivering a high-quality teaching session. Patients reacted generally favourably to the technology and no negative effects on interpersonal communication were identified. Conclusion: The experience of live streamed ward rounds was well received by patients, medical students and teaching faculty. However, there remain limitations to the routine use of HoloLens 2 technology in our setting including steep learning curves, hardware costs and environmental factors such as noise and WiFi connectivity. Live streamed ward rounds have potential postpandemic implications for the judicious use of resources, and the possibility for few educationally minded clinicians to teach at scale in a patient-friendly manner.

Seven Types of Uncertainty When Clinicians Care for Pediatric Patients With Advanced Cancer.

CONTEXT: Clinicians deciding whether to refer a patient or family to specialty palliative care report facing high levels of uncertainty. Most research on medical uncertainty has focused on prognostic uncertainty. As part of a pediatric palliative referral intervention for oncology teams we explored how uncertainty might influence palliative care referrals. OBJECTIVES: To describe distinct meanings of the term "uncertainty" that emerged during the qualitative evaluation of the development and implementation of an intervention to help oncologists overcome barriers to palliative care referrals. METHODS: We conducted a phenomenological qualitative analysis of "uncertainty" as experienced and described by interdisciplinary pediatric oncology team members in discussions, group activities and semistructured interviews regarding the introduction of palliative care. RESULTS: We found that clinicians caring for patients with advanced cancer confront seven broad categories of uncertainty: prognostic, informational, individual, communication, relational, collegial, and inter-institutional. Each of these kinds of uncertainty can contribute to delays in referring patients to palliative care. CONCLUSION: Various types of uncertainty arise in the care of pediatric patients with advanced cancer. To manage these forms of uncertainty, providers need to develop strategies and techniques to handle professionally challenging situations, communicate bad news, manage difficult interactions with families and colleagues, and collaborate with other organizations.

A conceptual model of barriers and facilitators to primary clinical teams requesting pediatric palliative care consultation based upon a narrative review.

BACKGROUND: Despite evidence that referral to pediatric palliative care reduces suffering and improves quality of life for patients and families, many clinicians delay referral until the end of life. The purpose of this article is to provide a conceptual model for why clinical teams delay discussing palliative care with parents. DISCUSSION: Building on a prior model of parent regoaling and relevant research literature, we argue for a conceptual model of the challenges and facilitators a clinical team might face in shifting from a restorative-focused treatment plan to a plan that includes palliative aspects, resulting in a subspecialty palliative care referral. Like patients and families, clinicians and clinical teams may recognize that a seriously ill patient would benefit from palliative care and shift from a restorative mindset to a palliative approach. We call this transition "clinician regoaling". Clinicians may experience inhibitors and facilitators to this transition at both the individual and team level which influence the clinicians' willingness to consult subspecialty palliative care. The 8 inhibitors to team level regoaling include: 1) team challenges due to hierarchy, 2) avoidance of criticizing colleagues, 3) structural communication challenges, 4) group norms in favor of restorative goals, 5) diffusion of responsibility, 6) inhibited expression of sorrow, 7) lack of social support, 8) reinforcement of labeling and conflict. The 6 facilitators of team regoaling include: 1) processes to build a shared mental model, 2) mutual trust to encourage dissent, 3) anticipating conflict and team problem solving, 4) processes for reevaluation of goals, 5) sharing serious news as a team, 6) team flexibility. CONCLUSIONS: Recognizing potential team level inhibitors to transitioning to palliative care can help clinicians develop strategies for making the transition more effectively when appropriate.

Pediatric Oncology Providers' Perceptions of a Palliative Care Service: The Influence of Emotional Esteem and Emotional Labor.

CONTEXT: Pediatric palliative care consults for children with cancer often occur late in the course of disease and close to death, when earlier involvement would reduce suffering. The perceptions that pediatric oncology providers hold about the pediatric palliative care service (PPCS) may shape referral patterns. OBJECTIVES: To explore how pediatric oncology providers at one institution perceived the hospital's PPCS and the way these perceptions may influence the timing of consultation. METHODS: We conducted semistructured qualitative interviews with pediatric oncology providers at a large children's hospital. Interviews were audio-recorded, transcribed, and analyzed by two coders using a modified grounded theory approach. RESULTS: We interviewed 16 providers (10 physicians, one nurse practitioner, two social workers, two psychologists, and one child life specialist). Three core perceptions emerged: 1) the PPCS offers a diverse range of valuable contributions to the care of children with advancing cancer; 2) providers held favorable opinions about the PPCS owing to positive interactions with individual palliative care specialists deemed extraordinarily emotionally skilled; and 3) there is considerable emotional labor involved in calling a PPCS consult that serves as a barrier to early initiation. CONCLUSION: The pediatric oncology providers in our study held a highly favorable opinion about their institution's PPCS and agreed that early consultation is ideal. However, they also described that formally consulting PPCS is extremely difficult because of what the PPCS symbolizes to families and the emotional labor that the provider must manage in introducing them. Interventions to encourage the early initiation of palliative care in this population may benefit from a focus on the emotional experiences of providers.

Early Aspirin administration post Coronary Artery Bypass Graft Surgery - Changing hospital culture through a two-cycled audit.

"Early Aspirin" or a medium dose of aspirin 6 hours after Coronary Artery Bypass Graft (CABG) Surgery is strongly recommend by international guidelines (EACTS 2007/AHA 2011 guidelines, Level1a evidence) to protect venous graft patency. However, compliance with Early Aspirin prescription at our centre is poor due to long standing hospital cultural practices and lack of awareness. We completed a two-cycled retrospective audit of 53 (September 2015 Baseline), 65 (January 2016 First Cycle) and 58 (June 2016 Second Cycle) consecutive CABG patients. Interval interventions included educational presentations, educational leaflets/posters, pharmacy liaison and modifications to e-prescription order-sets. Medical, nursing and pharmacy staff were involved in the audit strategies. Early aspirin prescription improved from 23% to 48% to 55% while administration of Early Aspirin improved from 17% to 38% and finally to 48% by second improvement cycle. Significantly, the proportion of patients with omission of early aspirin despite a clear clinical indication, decreased by 50% over the audit period. Important practical considerations were the last dose of anti-platelets preoperatively and amount of of bleeding from mediastinal drains post operatively. A multidisciplinary team based approach led to a 139% improvement in prescription and 182% improvement in administration of "Early Aspirin" after CABG surgery.

A mistaken identity: rhabdomyosarcoma of the middle ear cleft misdiagnosed as chronic suppurative otitis media with temporal lobe abscess.

A 5-year-old girl presented with a 3-month history of left side facial palsy, followed sequentially by purulent ear discharge, complete external ophthalmoplaegia and blurred vision. On clinical examination she was febrile with left-sided conductive hearing loss. She was clinically diagnosed to have chronic suppurative otitis media of the unsafe type with petrous apicitis, middle cranial fossa abscess and cavernous sinus involvement. Preliminary CT scan findings were reported as a large left temporal lobe abscess and left otitis media with cholesteatoma. MRI of the brain obtained later corroborated the abnormalities detected on the CT scan. Ten days after admission, a mass was seen protruding from the external auditory canal. A biopsy of the mass was obtained and sent for histopathological examination. Meanwhile, review of the MRI suggested an aggressive neoplasm such as sarcoma/rhabdomyosarcoma. Histopathology clinched the final diagnosis of an anaplastic type of embryonal rhabdomyosarcoma of the middle ear cleft.

Ribosomal and hematopoietic defects in induced pluripotent stem cells derived from Diamond Blackfan anemia patients.

Diamond Blackfan anemia (DBA) is a congenital disorder with erythroid (Ery) hypoplasia and tissue morphogenic abnormalities. Most DBA cases are caused by heterozygous null mutations in genes encoding ribosomal proteins. Understanding how haploinsufficiency of these ubiquitous proteins causes DBA is hampered by limited availability of tissues from affected patients. We generated induced pluripotent stem cells (iPSCs) from fibroblasts of DBA patients carrying mutations in RPS19 and RPL5. Compared with controls, DBA fibroblasts formed iPSCs inefficiently, although we obtained 1 stable clone from each fibroblast line. RPS19-mutated iPSCs exhibited defects in 40S (small) ribosomal subunit assembly and production of 18S ribosomal RNA (rRNA). Upon induced differentiation, the mutant clone exhibited globally impaired hematopoiesis, with the Ery lineage affected most profoundly. RPL5-mutated iPSCs exhibited defective 60S (large) ribosomal subunit assembly, accumulation of 12S pre-rRNA, and impaired erythropoiesis. In both mutant iPSC lines, genetic correction of ribosomal protein deficiency via complementary DNA transfer into the "safe harbor" AAVS1 locus alleviated abnormalities in ribosome biogenesis and hematopoiesis. Our studies show that pathological features of DBA are recapitulated by iPSCs, provide a renewable source of cells to model various tissue defects, and demonstrate proof of principle for genetic correction strategies in patient stem cells.

HIV genotype resistance testing in antiretroviral (ART) exposed Indian children--a need of the hour.

Development of drug resistance in HIV infected children with treatment failure is a major impediment to selection of appropriate therapy. HIV genotype resistance assays predict drug resistance on the basis of mutations in the viral genome. However, their clinical utility, especially in a resource limited setting is still a subject of debate. The authors report two cases in which both the children suffered from treatment failure of various antiretroviral therapy regimes. In both the cases, Genotype Resistance Testing (GRT) prompted a radical change from proposed failure therapy as per existing guidelines. GRT was specifically important for the selection of a new dual Nucleoside reverse transcriptase inhibitors (NRTI) component of failure regimen by identifying TAMS and M184V mutations in the HIV genome. These case reports highlight the importance of GRT in children failing multiple antiretroviral regimes; and emphasizes the need to recognize situations where GRT is absolutely essential to guide appropriate therapy, even in a resource limited setting.

Recent insights into inherited bone marrow failure syndromes.

PURPOSE OF REVIEW: Inherited bone marrow failure syndromes (IBMFS) are a diverse set of genetic disorders characterized by the inability of the bone marrow to produce sufficient circulating blood cells. The purpose of this review is to highlight novel findings in recent years and their impact on the understanding of IBMFS. RECENT FINDINGS: Mutations in over 80 different genes have been associated with the development of bone marrow failure (BMF). The products of the genes mutated in IBMFS frequently participate in housekeeping pathways, which are important for cell growth and division rather than being specific for hematopoiesis. The common theme of these pathways, when disturbed, is the activation of p53, leading to cell cycle arrest, senescence, and cell death. With continued improvement in therapy for IBMFS, late complications, such as development of malignancies, are seen more frequently. This highlights the importance of understanding the affected pathways and their roles in cancer development. SUMMARY: The recent advancement of our understanding of IBMFS has come largely through the identification of the genetic lesions responsible for disease and the investigations of their pathways. Applied in clinical practice, these findings make it possible to unambiguously identify mutation carriers even before the development of BMF and exclude or confirm a suspected clinical diagnosis for many of the more common IBMFS. The further characterization of the pathways leading to IBMFS is likely to reveal novel targets for screening tests, prognostic biomarkers, and improved and specific therapeutics.

Unusual presentation in Axenfeld-Rieger syndrome.

We report an unusual presentation of a case of Axenfeld-Rieger (A-R) syndrome. A 14-year-old male presented with gradual dimness of vision for 1 year and redness of left eye for 3 days. The patient had megalocornea with Haab's striae in the right eye and posterior embryotoxon in both the eyes. In the left eye, there was a white cord-like structure traversing the anterior chamber with adhesions to iris tissue along its course. On two antiglaucoma medications, his intraocular pressure (IOP) was 22 mm Hg in the right eye and 18 mm Hg in the left eye. Gonioscopy revealed a cord-like structure originating at the level of Schwalbe's line. He underwent right eye trabeculectomy with mitomycin-C. This case highlights a rare presentation of a strange cord-like structure, a rare presentation of A-R syndrome.