1.Sight lost, insight kept: Cortical blindness without visual anosognosia after bilateral occipital infarcts: A case report.
John Lorenze C. DATINGUINOO ; Vicente G. ROSALES JR. ; Johnny K. LOKIN
Philippine Journal of Neurology 2025;28(2):14-21
Cortical blindness, a consequence of bilateral occipital lobe lesions, typically manifests with partial or complete visual loss. It is often associated with the intriguing phenomenon of visual anosognosia, wherein patients paradoxically deny their profound visual loss, which would often lead to confabulation. This constellation of clinical findings points to Anton’s Syndrome. Bilateral occipital infarcts are the most common cause of cortical blindness, and the cooccurrence of visual anosognosia is frequently reported in these cases. We present a unique case of a 65-year-old right- handed Filipino male who experienced sudden, acute cortical blindness resulting from simultaneous bilateral occipital infarcts of likely cardioembolic origin secondary to atrial fibrillation. Despite the cortical blindness, the patient explicitly acknowledged his blindness and was not demonstrating signs of denial or confabulation. The patient’s neurological examination was otherwise notable only for the visual impairment, without other focal deficits. This clinical presentation stands in contrast to the typical features of Anton's syndrome. Cranial magnetic resonance imaging revealed acute infarcts in both occipital lobes and the right pons. This unusual presentation underscores the heterogeneity in the clinical expression of posterior circulation strokes. This case contributes valuable insights into the complex neural pathways involved between visual information processing, its awareness, and speech production following bilateral occipital infarction. This is the Philippines’ unprecedented case of bilateral visual loss after simultaneous acute bilateral occipital infarcts occurring without accompanying visual anosognosia.
Human ; Male ; Aged: 65-79 Yrs Old ; Cardioembolic Stroke ; Embolic Stroke ; Stroke
2.Sight lost, insight kept: Cortical blindness without visual anosognosia after bilateral occipital infarcts: A case report.
John Lorenze C. DATINGUINOO ; Vicente G. ROSALES JR. ; Johnny K. LOKIN
Philippine Journal of Neurology 2025;28(2):14-21
Cortical blindness, a consequence of bilateral occipital lobe lesions, typically manifests with partial or complete visual loss. It is often associated with the intriguing phenomenon of visual anosognosia, wherein patients paradoxically deny their profound visual loss, which would often lead to confabulation. This constellation of clinical findings points to Anton’s Syndrome. Bilateral occipital infarcts are the most common cause of cortical blindness, and the cooccurrence of visual anosognosia is frequently reported in these cases. We present a unique case of a 65-year-old right- handed Filipino male who experienced sudden, acute cortical blindness resulting from simultaneous bilateral occipital infarcts of likely cardioembolic origin secondary to atrial fibrillation. Despite the cortical blindness, the patient explicitly acknowledged his blindness and was not demonstrating signs of denial or confabulation. The patient’s neurological examination was otherwise notable only for the visual impairment, without other focal deficits. This clinical presentation stands in contrast to the typical features of Anton's syndrome. Cranial magnetic resonance imaging revealed acute infarcts in both occipital lobes and the right pons. This unusual presentation underscores the heterogeneity in the clinical expression of posterior circulation strokes. This case contributes valuable insights into the complex neural pathways involved between visual information processing, its awareness, and speech production following bilateral occipital infarction. This is the Philippines’ unprecedented case of bilateral visual loss after simultaneous acute bilateral occipital infarcts occurring without accompanying visual anosognosia.
Human ; Male ; Aged: 65-79 Yrs Old ; Cardioembolic Stroke ; Embolic Stroke ; Stroke
3.Translation using collaborative translation protocols and initial validation of the Filipino version of stroke specific quality of life scale for stroke survivors.
Angelica Marie V. MANDARIO ; Gerald Neil Sj. MANALO ; Marlo Eduardo M. MANALO ; Jann Marielle M. MANGALI ; Erwin T. MANIPOL ; Christine Beatrix Y. MANALO ; Maria Minerva P. CALIMAG ; Wennielyn F. FAJILAN ; Elenita C. MENDOZA ; John Dale V. TROGO ; Johnny K. LOKIN
Journal of Medicine University of Santo Tomas 2025;9(S1):3-15
METHODOLOGY
A descriptive, cross-sectional design was utilized, involving the translation of the SS-QOL from English to Filipino through Collaborative Translation Protocols, which centered on group consensus. Three Filipino language experts rigorously evaluated the initial translation for linguistic and cultural appropriateness. To assess content and face validity, an expert committee of three neurology consultants provided ratings, which were analyzed using the item-level content validity index (i-CVI). Subsequently, a pilot testing phase was conducted with 10 stroke survivors recruited via purposeful sampling in Metro Manila to evaluate the SS-QOL-Filipino’s clarity, layout, understandability and answerability, while also measuring the intraclass correlation coefficient (ICC) to assess consistency and agreement among items
RESULTSThis study successfully developed a stroke-specific HRQOL tool for the Philippines, addressing a critical need for objective measures in patient-centered care. The use of Collaborative Translation Protocols ensured the questionnaire’s conceptual, linguistic and cultural equivalence, incorporating nuances specific to the Filipino context in areas like eating habits, emotional expressions and technological terms. The high face and content validity, coupled with strong consistency and high understandability observed during pilot testing underscore the SS-QOL-Filipino’s suitability for the target population, positioning it as a valuable instrument for both clinical practice and research.
CONCLUSIONThe SS-QOL scale was successfully translated into Filipino using Collaborative Translation Protocols and rigorously validated. The SS-QOL-Filipino version demonstrates high content and face validity, strong consistency and excellent understandability and answerability, affirming its status as a reliable and appropriate outcome measure for assessing the QOL among stroke patients in Metro Manila.
Human ; Male ; Female ; Middle Aged: 45-64 Yrs Old ; Aged: 65-79 Yrs Old ; Adult: 25-44 Yrs Old ; Life ; Quality Of Life ; Stroke ; Survivors
4.Aspirin resistance among patients with recurrent non-cardioembolic stroke detected by rapid platelet function analyzer
Jose C Navarro ; Annabelle Y Lao ; Maricar P Yumul ; Maria Leticia C Araullo ; Johnny K Lokin ; Alejandro C Baroque ii
Neurology Asia 2007;12(1):89-95
Background and Objective: The prevalence of aspirin resistance amongst patients with cardiovascular
disease and in the healthy population has been reported to range from 5% to 45%. Lately, rapid platelet
function analyzer (RPFA) a point-of-care determination of platelet aggregability has been introduced for
rapid determination of aspirin resistant patients. The purpose of this paper is to report the prevalence
of aspirin resistance among patients with recurrent non cardioembolic ischemic stroke as detected
by RPFA (Ultegra®). Methods: Seventy-seven patients with mean age of 61.2 + 10.4 (range 33-87
years) who developed recurrent non-cardioembolic ischemic stroke were consecutively included in the
study. Fifty-seven (74%) were males. Aspirin resistance was determined using the RPFA (Ultegra®)
machine. Patients with an aspirin reaction unit (ARU) value above 550 were identified as aspirin
resistant. Results: Following this method, the prevalence of aspirin resistance was determined to be
10.4% (95% CI: 1% to17%). Comparison of baseline characteristics between aspirin resistant and
aspirin responsive patients did not show any significant difference.
Conclusion: The prevalence of aspirin resistance in this study was 10.4% amongst patients with
recurrent non-cardioembolic ischemic stroke. The study has shown the feasibility of utilizing RPFA
(Ultegra®) machine in detecting aspirin resistance.

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