Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0151744 (myocardial ischemia)
 31,282 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Study of the detailed pathology of the myocardium and coronary arteries in ambulatory subjects dying suddenly of coronary heart disease shows that they can be divided into two groups. In one group, there is atherosclerosis with a new vascular event involving coronary thrombosis, which initiates acute myocardial ischemia. In the other group, there is chronic high-grade stenosis due to atherosclerosis, but there is no recent vascular change; the myocardium in this group shows scarring from a previously healed infarction acting as a substrate for reentrant ventricular arrhythmias. A study of 168 consecutive cases of sudden coronary death in London showed 73.3% to have had a recent coronary thrombotic lesion, giving a ratio of 2.7:1 for patients with versus patients without new acute myocardial ischemia. The widely differing ratios reported in the literature probably reflect the patterns of case selection. Prodromal pain immediately before the onset of ventricular fibrillation in a patient without previous known coronary disease selects for a thrombotic cause and acute myocardial ischemia. Absence of pain in a patient known to have had a previous infarction selects for a primary arrhythmia on the basis of preexisting myocardial hypertrophy and/or scarring.
 ...
PMID:Anatomic features in victims of sudden coronary death. Coronary artery pathology. 172

We report the case of a 53-year-old female patient who developed bilateral sudden visual acuity loss after 15 weeks from the initiation of Peg-Interferon and Ribavirin treatment for hepatitis C. Debut was simultaneous and asymmetric, reported in the morning, at awakening. No pain or other symptom was reported by the patient. Results. At presentation, visual acuity was 0.2 in RE and 3/ 50 in LE. Pupillary reflexes were sluggish and severe dyschromatopsia was documented in both eyes (Ishihara plates). Fundus examination revealed bilateral pale optic disc edema, more prominent in LE, with splinter hemorrhages in the RNFL around the optic disk. Visual field exam demonstrated severe defects in 3 quadrants of the RE, whereas in the LE, it was impossible to perform the investigation due to VA<0.1. Neurologic evaluation was normal; other possible causes of systemic vasculitis were excluded by negative lab tests. Acute inflammatory markers (fibrinogen and ESR) and mild pancytopenia were the only documented laboratory changes in this patient. Anamnesis cleared the traditional risk factors for conventional AION (hypertension, diabetes, ischemic heart disease, and hypercholesterolemia). Cranial and orbital CT scan and MRI findings were normal. Patient was withdrawn from the Interferon and Ribavirin treatment and was administered methyl prednisolone pulse therapy (1g/ day) for 3 days, continued with oral Prednisone (60 mg/ day) tapered slowly for over 12 weeks. VA increased to 0.8 during treatment in the RE, but visual recovery in the LE was not as spectacular (0.16) as in the fellow eye. Modified latencies and amplitudes in evoked visual potentials examination during 4 months time emphasized bilateral optic atrophy. Optic nerve sufferance was amplified by a low level of vitamin B12, detected by chance at the last eye visit. Due to the general condition, dietary supplementation was not possible. Conclusion. A case of a patient with bilateral and simultaneous NAION caused by IFN and Ribavirin treatment for hepatitis C, who was also vitamin B12 deficient, was analyzed. Therefore, a combined etiology for optic atrophy was explained.
 ...
PMID:Combined etiology for bilateral and simultaneous optic neuropathy in a patient with ciancobalamin deficit and hepatitis C treated with peg-interferon and ribavirin. 2945 Mar 47