Acta Medica Philippina最新文献

Objectives: To describe the clinical profile and outcomes of a series of adult patients diagnosed with ocular myasthenia gravis and to evaluate the potential factors affecting the risk of generalization.

Methods: This retrospective cohort study involved a medical chart review of adult patients seen from 2012 to 2019 at the neuro-ophthalmology clinic of a tertiary Philippine hospital with a clinical diagnosis of ocular myasthenia gravis supported by serologic, electrophysiologic, or pharmacologic test results. Outcomes of interest were complete stable remission, pharmacologic remission, minimal manifestations, and generalization. Kaplan-Meier method and log-rank test were used to analyze the probability of generalization.

Results: The study sample consisted of 16 patients. The female to male ratio was 3:1. Mean age at symptom onset was 39 years. All patients received pharmacologic treatment, while two patients underwent thymectomy. No patient had remission as of last follow-up. Three patients had conversion of ocular myasthenia gravis to generalized myasthenia gravis. Mean time from symptom onset to generalization was 10.7 months. The generalization curves of patients who were symptomatic for less than two years and those who were symptomatic for at least two years prior to consult were significantly different (p = 0.049).

Conclusion: In this single-center study, there was female predominance among adult patients diagnosed with ocular myasthenia gravis. The incidence of generalization was 4 per 100 person-years while the 2-year probability of generalization was 30%. Further study is needed in order to determine the factors affecting the risk of generalization.

Posterior fossa malformations are rare cyst-like pathologies of the central nervous system. Outcomes of patients with these conditions are largely documented in fetal or early childhood studies as most cases are non-compatible with life. Also, different schemes to categorize these occurrences have been proposed. One classification puts forth that the entities are a continuum of pathologies, called the Dandy Walker Complex, wherein Mega Cisterna Magna is the most benign to Dandy Walker Malformation as the most severe form. We report the first case of a patient with a mixed presentation of Mega Cisterna Magna having extracranial manifestations of Dandy Walker Malformation reaching her adult years. The patient is a 26-year-old female who was apparently well until she presented with recurrent headache and seizure episodes of 2-year duration. She had an unremarkable birth and childhood history, apart from learning difficulties in school. In her adult years, she gave birth to an infant with multiple physical anomalies. She has a maternal uncle with abnormal facie and intellectual disability. Physical examination of the patient exhibited a bulging occiput, hypertelorism, down-slanting palpebral fissures, large globular nose, large ear lobules, high arched palate, and clinodactyly. Neurologic examination was unremarkable. Magnetic resonance imaging confirmed Mega Cisterna Magna and was deemed non-surgical. She remained seizure-free during admission as well as on follow-up, maintained on Phenytoin. The existence of a Dandy-Walker continuum is still debated, as the link among the disease entities are yet to be established using developmental or genetic studies. This case, however, supports the Dandy-Walker Complex classification by demonstrating a rare combination of Mega Cisterna Magna with features of Dandy-Walker Malformation in an adult. This can contribute to disease definition and eventually to the discovery of the pathobiological mechanisms of posterior fossa cysts, and to appropriate diagnosis and management.

The COVID-19 pandemic has underscored the vital role of vaccination in mitigating widespread morbidity and mortality. Nevertheless, the global vaccination campaign has also brought to light rare but notable immune-mediated adverse events. Vaccination is inherently immune stimulatory, designed to provoke a robust immune response, and in rare instances, this heightened immune activity may unmask or trigger autoimmunity in genetically predisposed individuals. Proposed mechanisms include molecular mimicry, epitope spreading, and bystander activation, all of which can disrupt immune tolerance and initiate autoreactive responses. This case report explores a potential link between COVID-19 vaccination and the onset of dermatomyositis, adding to the growing body of literature examining the rare but important phenomenon of vaccine-associated autoimmunity.

Objectives: In response to the need for a simple and fast way of ensuring that generic drugs especially those that contain rifampicin are bioequivalent with reference drugs, this study validated an ultra-high-performance liquid chromatography (UHPLC) method of quantifying rifampicin in human plasma. The study also validated the method's selectivity, linearity, sensitivity, accuracy, precision, and the absence of a carry-over effect adhering to the Philippine Food and Drug Administration guidelines.

Methods: Plasma samples were prepared via protein precipitation using methanol containing ascorbic acid. Three microliters (3 uL) of the prepared samples were then analyzed in a Waters Acquity H-Class UPLC^® system coupled to a tunable ultraviolet (TUV) detector with an attached UPLC^® BEH C-18 column using a developed and optimized method. Briefly, the column temperature was set to 40°C and the sample temperature was set to 10°C. Elution was done using a linear gradient flow of a water-acetonitrile mixture that started with 45% acetonitrile increasing to 60% acetonitrile at 0.5 minutes and back to 45% acetonitrile at 3 minutes and having a constant flow rate of 0.5 mL/min. Detection was done at 340 nm. Method validation was performed following the ICH guidelines for Bioanalytical Method Validation, the same guidelines referenced by the ASEAN Guideline for Harmonisation of Standards and the Philippine Food and Drug Administration (FDA).

Results: The method had an analysis time of 3 minutes wherein rifampicin eluted at 1.4 minutes while the internal standard, rifapentine (IS) eluted at 1.7 minutes. Since no co-eluting endogenous materials were observed for the rifampicin and the internal standard, the method was confirmed to be selective. Its linearity over the range of 2 ug/mL to 25 ug/mL has been validated where it has a limit of detection (LOD) and limit of quantification (LOQ) values of 0.64 ug/mL and 1.94 ug/mL, respectively. The interday and intraday precision, reported as % coefficient of variance (%CV), and interday and intraday accuracy, reported as %error all within the limits of ±20% for the LLOQ and ±15% for the rest indicating its reliability and reproducibility. Lastly, due to the nature of the injection of the sample into the system, wherein a blank immediately follows the highest concentration standard, the method has been cleared of a carry-over effect.

Conclusion: The study successfully validated a UHPLC method of quantifying rifampicin in human plasma. Due to the sample processing method used and the chromatographic conditions set, the method can prepare and analyze samples in a simple yet fast, sensitive, reliable, and reproducible manner. The method can be applied in bioavailability and bioequivalence studies of rifampicin.

Objective: This study analyzed the factors influencing the implementation of the disability benefit package for children with developmental disabilities (CDDs) in the Philippines.

Methods: Data collection was done through document review of policy documents and focused group discussions (FGDs). Guided by Walt and Gilson's policy triangle framework, data were analyzed through content analysis.

Results: Twenty-two (22) policy documents were reviewed and a total of 16 participants joined the FGDs. Facilitators and barriers were identified and categorized through the policy elements: 1) context is anchored by presence of laws and policies but is hindered by issues on politics, governance, and labor force; 2) policy actors are hopeful in the continuous implementation of the policy but there is a lack of participation from all potential policy actors and limitations with human resources; 3) content is sound and comprehensive but there are costing issues and compliance concerns with requirements; and 4) processes emphasize quality assurance and promising initial dissemination efforts but the lack of stakeholder engagement activities and the tediousness of requirements discourage potential service providers.

Conclusion: While the launch of the disability benefit package for CDDs in the Philippines seemed promising, the policy remains underutilized as the identified barriers outweigh the facilitators. Specific recommendations for the improvement and implementation of the benefit package were outlined and framed based on the policy triangle framework.

Myeloid sarcoma is a tumor that demonstrates extramedullary proliferation of myeloid blasts with or without maturation. It may present as an isolated tumor or may have peripheral or marrow involvement. The diagnosis of myeloid sarcoma is highly challenging as it may mimic other tumors. A 71-year-old woman with an Eastern Cooperative Oncology Group (ECOG) performance score of 2 presented with a progressively enlarging right facial mass that had been growing for 18 months. Initially, it appeared as a 1x1 cm erythematous pustular lesion. A core biopsy suggested carcinoma, but COVID-19 delayed immunohistochemical (IHC) testing. As the mass grew, eventually covering more than half of her face, a CT scan revealed a large, multilobulated mass involving the periorbital areas, nose, and upper lip. A repeat biopsy showed atypical round cell proliferation, and immunohistochemical staining confirmed myeloid sarcoma with CD34 and CD117 positivity. Bone marrow aspiration and biopsy ruled out leukemia. The diagnosis of non-leukemic myeloid sarcoma was established. The patient was referred to plastic surgery, ophthalmology, and otorhinolaryngology for co-management of the mass. Initial treatment began with azacitidine, a hypomethylating agent. However, after completing only one cycle of chemotherapy, she declined further treatment for personal reasons, choosing not to continue with the planned therapeutic regimen. Non-leukemic myeloid sarcoma of the face in an elderly patient is rare. Diagnosis was confirmed via biopsy and immunohistochemical studies. Treatment with azacitidine was chosen based on the patient's ECOG score of 2. However, there is no consensus on its management, and the role of systemic chemotherapy remains debated. Continuous monitoring for progression to acute myeloid leukemia (AML) is crucial, as early detection significantly impacts prognosis and informs treatment decisions.

Background: A substantial number of COVID-19 recoverees are working-aged individuals, which makes return-towork (RTW) an essential part of rehabilitation. Many COVID-19 recoverees must deal with physical and mental symptoms of post-COVID conditions such as fatigue, dyspnea, difficulty concentrating, memory lapses, and anxiety. These symptoms coupled with often insufficient support from employers and the government can make the RTW process complicated. Although research related to RTW after COVID-19 has begun to emerge over the years, few primary studies have come out from developing countries.

Objectives: This exploratory study aims to describe perceived work ability and health-related quality of life, lived experiences of the RTW process, and role of rehabilitation in a limited sample of Filipino COVID-19 recoverees.

Methods: Using purposive sampling and a convergent parallel mixed-method design, the study draws on an online survey and group interviews to understand expectations, experiences, and self-rated work ability of working-age adults with post-COVID condition. We report the findings of the questionnaire data using descriptive statistics. From the questionnaire respondents, eight participants were interviewed to explore the RTW experiences from multiple perspectives. The group interview was conducted online, and narrative analysis was used to explore the data. This analytic process involved an iterative and inductive process between data gathering and data analysis.

Results: Findings from our narrative analysis are reported under four themes: 1) The period of liminality; 2) A 'positive' problem; 3) Health as a psychosocial and justice issue; and 4) The reimagination of paid work. The narratives gathered document an overview of how selected Filipinos overcame the COVID-19 infection and their recovery and RTW process.

Conclusion: Results call for a re-examination of the concept of health and paid work for individuals undergoing rehabilitation and recovery.

Background and objective: There is a call for changes in health professions education to help address current and future challenges. For the effective management of change in institutions involved with health professions education, it is important to consider organizational readiness for change and psychological safety. In organizations, the presence of psychological safety facilitates learning that is integral in organizational development, especially those undergoing changes. There are tools available to measure organizational readiness to change and psychological safety but they are separate and tend to be lengthy. The study developed and validated a brief, straightforward tool that integrates psychological safety in the measurement of organizational readiness for change. It can be useful in the assessment of academic organizations undergoing change in order to facilitate implementation and promote effective change.

Methods: The study used a sequential exploratory mixed methods design. A conceptual framework on organizational readiness to change which included psychological safety was developed from a review of literature. Relevant constructs were defined and corresponding questions were constructed and scaled. Five content experts qualitatively assessed the scale and removed items which were redundant, lacked clarity, or were irrelevant. The items were then reviewed by selected participants to ensure face validity. Finally, the questionnaire was administered to members of a unit (N=89) which was undergoing organizational change to ensure construct validity. Construct validity, internal consistency, convergent validity, and discriminant validity were determined using PLS-SEM and yielded acceptable results.

Results: The scale developed addressed components of organizational readiness to change and psychological safety. The scale was deemed to have good content validity by five experts, good face validity as tested by a small pilot group, and acceptable construct validity, internal consistency, convergent validity, and discriminant validity.

Conclusion: The quantitative scale developed for measuring readiness to change was assessed qualitatively and quantitatively, and deemed to have relevance and validity. It can be used by academic units embarking on change initiatives to assess organizational readiness with due consideration for psychological safety. Quantitative results from the tool can be supplemented with qualitative measures such as observations, interviews or focused group discussions to better identify and address areas needing attention. The study has the potential to make a significant contribution to both the theory and practice of change management.

Background and objective: Proper documentation of patient safety events is important to be able to provide changes that can prevent events from occurring again. The Philippine General Hospital launched an online platform for reporting patient safety events in 2017. This paper aimed to describe the patient safety events, initial response to the event, and preventive actions done in the institution.

Methods: This is a retrospective descriptive study of patient safety event records from August 2017 to April 2022. General data of the patients, details surrounding the events, response to the event, and preventive measures done after the event were documented. Descriptive analysis was performed.

Results: There was a total of 625 events reported with 525 total unique reports. There was an increased rate of patient safety event reports from 2021 to 2022. The average rate was 23.8 and 25.7 reports per month, respectively. Most reports were for in-patient cases and were type 3 preventable adverse events. The general initial response of healthcare personnel to the adverse events is to provide the appropriate clinical care. Preventive measures include re-orientation and event specific actions.

Conclusion: Documentation is crucial for patient safety events to provide solutions and prevent reoccurrence of these events that can cause harm to patients.

Background and objectives: Mouth retractors are essential in ensuring efficient yet safe exposure of the oral cavity and oropharynx. However, when applied improperly or haphazardly, retractors can cause tissue injuries and compromise patient safety. In addition, there are gaps in the usability of existing designs. This study aimed to identify the issues encountered by otorhinolaryngology surgeons in the use of commercially available mouth retractors, design and fabricate an improved retractor, and explore the use of additive manufacturing (popularly known as 3D printing) for retractor prototyping.

Methods: The study used the United States Food and Drug Administration (US FDA) Design Control as its framework. End-user requirements from otorhinolaryngologists were collected through key informant interviews. Results were organized into a Design Input template which was used to guide the design and development process. Prototype designs were iteratively created using computer-aided design software and 3D printing. Once design specifications were satisfied, a beta prototype was fabricated and given to another cohort of otorhinolaryngologists. The participants assessed the usability of the beta prototype. System Usability Scale (SUS) was used to quantify participant's feedback.

Results: Five designs were created in the course of the study. The final prototype was fabricated using a Stereolithography (SLA) 3D printer. Several features were developed to address user requirements. The primary modification was to make the retractor modular to facilitate easier and shorter mounting and assembly. Gingival injury was addressed with the replacement of the maxillary alveolus hook with support bars. Five participants evaluated the beta prototype which received a mean SUS score of 75, well above the 50^th percentile threshold.

Conclusion: This study demonstrates the applicability of the US FDA Design Control Process in the local setting to improve the mouth retractor design. Clinical and ergonomic issues were identified and design solutions were proposed and some have been implemented in a low-fidelity prototype. Results of the small-scale usability test suggest that the present form factor can be the basis for further iterations. Future studies can implement the proposed features to address other clinical and ergonomic needs.