Senile purpura in a medically compromised patient

Abstract

Senile purpura, a hemorrhagic disorder, may be caused either by functional impairment of platelets/blood vessel walls, by thrombocytopenia, or by blood clotting mechanism defects. Chronic kidney disease is a condition with decreased glomerular filtration rate. Chronic renal failure is one such disease that presents with a spectrum of oral manifestations such as uremic stomatitis, xerostomia, metallic taste, mucosal petechiae, ecchymosis, renal osteodystrophy, oral candidiasis, periodontal disease, mucosal lesions, and oral malignancies. Here, we report a case of senile purpura (ecchymosis) in an end-stage chronic kidney disease patient.

Modeling the 2022 τ-Herculid Outburst

“…Although no activity from the shower was recorded by the Harvard Radio Meteor Project in 1961-1965and 1968-1969(Wiegert et al 2005, a few meteoroids captured on photographic plates between 1963 and 1971 were identified as possible TAH members (Southworth & Hawkins 1963;Lindblad 1971). Very minor TAH activity was reported by CAMS on 2011 June 2 and again on 2017 May 30-31 (Rao 2021). Detectable visual activity from the shower has been reported on a single occasion by Nakamura (1930), who observed a TAH outburst of 59 meteors per hour on 1930 June 9 (SL ∼78°.9) and another event of about 72 meteors per hour the next night (Jenniskens 1995).…”

“…Detectable visual activity from the shower has been reported on a single occasion by Nakamura (1930), who observed a TAH outburst of 59 meteors per hour on 1930 June 9 (SL ∼78°.9) and another event of about 72 meteors per hour the next night (Jenniskens 1995). However, the unfavorable observing conditions during these nights (presence of clouds and bright moonlight) raises suspicion about the credibility of the reported intensity (Wiegert et al 2005;Rao 2021).…”

“…Fortunately, the comet was recovered in 1979 and has been observed during most of its apparitions since 1990. Despite expectations of an unremarkable return of the comet in 1995, 73P experienced a major outburst in September of that year that increased its predicted brightness by a factor of 400 (Rao 2021). Telescopic observations conducted in 1995 December revealed that the comet had split into at least four fragments, labeled 73P-A, B, C, and D (Bohnhardt et al 1995).…”

“…Dynamical models of the meteoroids ejected by 73P in 1995 indicate that material released at typical cometary gas-drag ejection speeds (Jones 1995) would not produce any strong TAH activity in 2022 (Wiegert et al 2005;Rao 2021;Ye & Vaubaillon 2022). However, models assuming higher ejection speeds did predict enhanced TAH rates caused by the 1995 ejecta (e.g., Lüthen et al 2001;Horii et al 2008;Rao 2021). The hopes for a possible TAH outburst or storm in 2022 caused meteor detection networks all around the world to organize observation campaigns to record the shower's return.…”