Mastodawn

Anestèsic local en úlceres corneals

https://media.blubrry.com/empod_cat/op3.dev/e/audios.empod.cat/MeM_AnestesicOcular.mp3

Per aquest Menys és Més us portem un mite de la medicina d’urgències que hem consultat al llibre Myths in Emergency Medicine. El mite que volem desmentir és el que diu que els col·liris anestèsics no són segurs en les úlceres corneals

Aquest mite té el seu origen en casos publicats d’afectes adversos com queratitis o infeccions. Aquests casos es refereixen a l’ús abusiu, no prescrit d’aquests col·liris.

Doncs bé, s’han anat publicant articles que rebaten aquesta afirmació. Diversos estudis aleatoritzats han mostrat l’eficàcia i seguretat d’aquests col·liris, tots conclouen que no hi ha cap risc d’efectes adversos o retard en el guariment d’aquestes úlceres corneals simples.

És cert que aquests estudis exclouen aquelles úlceres amb característiques que podríem anomenar complicades, com la presentació més enllà de les 36 hores, la presència d’òxid o infecció o la patologia ocular prèvia. En tots els estudis s’administraven antibiòtics tòpics.

Per tant, podem prescriure als nostres pacients amb úlceres corneals simples l’aplicació de gotes de col·liri anestèsic de forma segura. Si fem cas d’aquests estudis es podrien aplicar, si ho necessiten, fins a una gota de col·liri cada mitja hora durant dos dies. Els nostres pacients ho agrairan.

Transcripció de l’àudio

#Anèstesic #MenysÉsMés #Mites #Oftalmogia

Stefan F. Wirth Feb 21

Very small #mites are subject of my research as they are associated with other arthropods (#phoretic#dispersal), and even #influence the #microclimate in their #habitats in complex ways, by fungal #spore transport+chemical fungal growth regulation via own #fungicides. #Histiostoma #sapromyzarum is subject of my current#Behance project exploring it also #aestheticslly.

©#StefanFWirth

I depend on support, please buy me a coffee
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Behance S F.Wirth
https://www.behance.net/gallery/244398767/Fragile-Transparency

neville park Feb 17

Still the depths of winter here. I have been having dreams about bugs. I recently had a dream about finding plump whirligig mites everywhere: some their usual orange-red, others greenish because they had just eaten something green…I miss the mites.

Here are some whirligig mites I found a couple of years ago on a rock down by the lake, fighting over a dead midge. #iNaturalist observation: https://www.inaturalist.org/observations/225382565

#MiteMonday #Mitestodon #arachnids #mites #Acariformes #Anystidae

Stefan F. Wirth Feb 4

A striking #character of adult #mites in #Histiostomatidae (#Astigmata) is a highly #sclerotized area on the upper surface of #proterosoma. Its #latticelike #structure forms a #taxonomically relevant #symmetrical #pattern of windows, for which I introduced a #nomenclature in my PhD thesis. This area is a site of #muscleorigins (see #SEM section through a bigger specimen of #Acaridae).
©#StefanFWirth 2026

Please support my work with a coffee
https://ko-fi.com/sfwirth

#pics
©S.F. Wirth edit 2026

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Solar🌄Garden Jan 30

@kim_harding #mites similar to scabies but not requiring intimate contact are a perennial problem here! As the article says, soap and water, forget them. Not human transmitted here - there aren't any! But wild animals, particularly wild pigs and badgers who used to have diggings in the area. Microscopic wind-blown eggs too.

Being allergic also sends early warnings.

Experimenting with using solid oxygen-based bleach in cool laundry now, as hot washes and chlorine-based bleach are so environmentally heavy.

Easily grown Pennyroyal tincture works but highly NOT recommended unless you know what you're doing - lethal by paralysis to humans too! 50% DEET is lethal to them as well as repellent. Veterinary and agricultural #Permethrin is very cheap and available in bulk BUT being very insoluable in water, the cheap sources I've found are dissolved in toxic organic solvents, often including toluene. The low-concentration human pharmaceutical ointments are the scarce rip-off.

Stefan F. Wirth Jan 8

#Freelancers like me depend on support to survive and be productive, I much appreciate support for a coffee: ko-fi.com/sfwirth
I am performing #science, #sciencecommunication and #arts, often combining arts/science. My #topicrange is wide, it reaches from titan #isopods over the behaviors of the Mediterranean #Junebeetle and even over an #animated #video about the #Cambrianexplosion towards #phoretic #mites of the #Histiostomatidae. Here H. sp. from rotting #lemonfruits. Please support my work.

Stefan F. Wirth Jan 2

#Mouthparts in #mites of the #Acariformes are usually normal shaped as typical for #arachnids. The #chelicerae are the feeding organs consisting of digitus fixus and d. mobilis. #Pedipalps have sensing functions with different kinds of #sensoryorgans. In #Histiostomatidae (#Astigmata) the whole #gnathosoma is modified into a complex #filterfeeding organ that creates an #underpressure on #food surfaces.
© #StefanFWirth Berlin 2026

Reference
S. F. Wirth (2023)
https://www.fao.org/fileadmin/user_upload/GSP/GSOIL4N/GSOIL4N-Posters/ID_167.pdf

Stefan F. Wirth Dec 24

#Mites of the #Histiostomatidae live in #darkness in their #ephemeral #microhabitats. The distinctive deutonymphs are the #dispersal stage, being transported by insects. #Adults, however, live freely and #communicate via complex #olfactorysignals. An important #glandularcomplex is located on the dorsal body side. I participated in a study about the #geranial-rich glandular #secretions (2012).

Ref

https://doi.org/10.1080/01647954.2012.662247

#SEM #pics

neville park Dec 23

Been a long time since I posted anything for #MiteMonday, but I was going through my camera and found this one I don't think I've shared before! Just a good old _Allothrombium_ red velvet mite.

#Mitestodon #arachnids #mites #Acari #Acariformes #Prostigmata #Trombidiidae