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Pikapolonica
Pridružen/-a: 24.06. 2006, 12:56
Prispevkov: 658
Kraj: Domžale
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 Objavljeno: 18 Apr 2007 12:48 Naslov sporočila: Elektroliti Mg, K, Na; srcni utrip (SLO) |
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Tole bo mogoce se komu v korist. Nasvet kolegice z ameriskega foruma.
Lp Pika
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Whether excess levels of Magnesium might produce arrhythmia, I can't comment until I do a bit more reading.....certainly, it can produce a somewhat comatose (sleepy) state......that might prove hazardous in the short or long term.......if overdone....
That's one reason that they stopped using excess Magnesium as a potential anaesthetic many decades ago (early 1900s )....but high intakes of Magnesium salts can cause diarrhoea, and that is more likely to indicate an excessive intake of this essential metal.
Ask for a test for Magnesium along with sodium and potassium to find out your electolyte status. If they all look low, you might be short of them or you might be taking too much water without enough salt(s)........and that can be just as dangerous as the electrolytes looking too high...showing that you might be dehydrated.
Any imbalances in electrolytes can upset the cardiac rhythm, but the measurements of blood/serum/ magnesium are quite difficult to interpret.
They might show relatively normal levels of magnesium, whilst the amount in the muscle tissue is low....and that would require a biopsy of the tissue to get confirmation.
Cramps or spasms in the muscle are an indicator that magnesium is low (and maybe sodium, as well).
It's useful to get about 350mg/day of Magnesium from your diet, usually from five portions, or more, of fruit or vegetables /day....but you may need to add in some Magnesium to any calcium supplementation, so that the ratio is somewhere between 2 :1 and 1 : 1 Ca : Mg ~
In hypothyroidism, if blood levels of potassium look to be high and Magnesium looks to be low, that might indicate the intracellular potassium is low and Magnesium could be needed to correct that problem, ie to activate the enzyme Na+/K+ ATPase and to restore the electrolyte status, as between the inner and outer membranes of all cells.
Along with the altered sensivity of nerve cells in the heart muscle to high or low (hyper- or hypo-) thyroid hormone status, changes in the electrolytes can also make it difficult to decide which factors are causing palpitations, or cardiac arrhythmia, or a fast/slow heart-beat (tachycardia/bradycardia).
It's known that low magnesium can induce a " long Q -T gap " which makes cardiac arrhythmia more likely and that high magnesium levels are likely to shorten the Q -T gap.
Q -T gap is a measure of the electrical condition of the heart ~ measured on an ECG (elctrocardiogram).
The danger from a long Q -T gap is that cardiac arrhythmia is unpredictable and can cause sudden death, possibly, as a result of stress......or merely, from what might be termed 'normal changes' during the day/night....
You are right to be concerned about taking any excess amounts of Magnesium, but may need to educate your doctor about the wisdom of leaving low Magnesium levels untreated/uncorrected.
I use Review of Medical Physiology, 21st edn 2003, p561 by WF Ganong as my source, the more recent version 22nd edition 2005 can also be seen on Amazon (use 'look inside'). and the latest version 23rd, is published sometime soon...
if you are concerned, ask to see a specialist cardiac consultant on this matter....s/he may coordinate your overall care to minimise the risks associated with the difficulty in establishing proper endocrine/electrolyte control, and especially if the endocrine system has been disrupted for any length of time.....
by the time people have been admitted to hospital emergency treatment services several times.....( some people on this forum have experienced recurring ~ 'events')....the need for caution and education becomes more obvious.....
Nazadnje urejal/a Pikapolonica 21 Apr 2007 08:39; skupaj popravljeno 1 krat |
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Pikapolonica
Pridružen/-a: 24.06. 2006, 12:56
Prispevkov: 658
Kraj: Domžale
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| Objavljeno: 21 Apr 2007 08:16 Naslov sporočila: Prevod (Mg, K, Na, aritmije) |
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Odgovor na moje vprasanje neke ameriske pacientke:
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Ne morem komentirati, ali preveč magnezija lahko povzroča aritmijo dokler še malo ne raziščem…gotovo lahko povzroči neke vrste zaspano stanje…kar je lahko dolgoročno tvegano, če se pretirava…
To je tudi razlog, da so pred desetletji nehali uporabljati Mg…vendar visok vnos Mg soli povzroča drisko in je bolj jasen znak, da je tega osnovnega minerala preveč.
Prosite za test Mg skupaj z Na in K, da ugotovite vaš status elektrolitov. Če so nizki, je možno, da morda prijete preveč tekočin, brez dovolj soli…kar je lahko pravtako nevarno kot previsoki elektroliti…ki nakazujejo dehidracijo.
Asako neravnovesje v elektrolitih lahko vznemiri srčni utrip, vendar pa je težko pravilno itperpretirati vrednosti Mg v serumu.
Lahko kažejo relativno normalne vrednosti Mg, medtem ko je njegova količina v mišičnem tkivu nizka…za kar pa bi rabili narediti biopsijo tkiva.
Mišični krči so znak prenizke vsebnosti Mg (in morda tudi Na).
Koristno je dobiti okoli 350mg Mg dnevno iz hrane, navadno v 5 obrokih ali več sadja ali zelenjave7dan…lahko pa dodate še nekaj kalcija v razmerju 2:1 ali 1:1 (kalcij vpliva na absorbcijo magnezija?) Pri hipotorozi velja, če so videti krvne vrednosti kalija visoke in magnezija nizke, lahko to pomeni, da je medcelični kalij nizek in potrebujete magnezij, da to popravi z aktivacijo encimov Na+/K+/ ATP in uravna status elektrolitov med notranjo in zunanjo celično membrano.
Skupaj s premenjeno občutljivostjo živčnih vlaken v srčni mišici na višjo ali nižjo (hiper ali hipo) raven ščitničnih normonov, lahko tudi sprememba v statusu elektrolitov povzroči podobno, zato je težko opredeliti vzrok palpitacij ali srčnih aritmij hitrega ali počasnega srčnega utripa (tahi/brahi kardijo).
Znano je, da nozka vsebnost magnezija (?v srčni mišici?) povzroči dolg Q-T razmik na EKGju, kar poveča verjetnost aritmije, medtem ko viskoe crenosti magnezija skrajšajo Q-T razmik.
Q-T razmik je meritev električnega stanja srca, meri se na EKGju.
Nevarnost dolgega Q-T razmika je, da je aritmija nenapovedljiva in lahko povzroči nenadno smrt, kot posledico stresa…ali celo pri običajnih sprmembah med dnevom in nočjo…
Pravilno je, da vas skrbi glede previsokega vnosa magnezija in prav je, da svojega zdravnika poučite o teh učinkih.
Jaz uporabljam kot vir knjigo Review of Medical Physiology, 21st edn 2003, p561 by WF Ganong, ki se jo da brati tudi na spletnem naslovu Amazon (use 'look inside').
če vas skrbi, se o tem pomenite s kardiologom, glede pravilno uravnoteženih elektrolitov, posebej, če je bil sistem žlez dlje časa moten… |
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lenča
Pridružen/-a: 07.03. 2007, 20:28
Prispevkov: 155
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| Objavljeno: 21 Apr 2007 13:28 Naslov sporočila: |
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Zaradi krčev v nogah in rokah uživam Magnesol 1 šumečo tableto na dan, zraven pa še Ca 2 tableti na dan zaradi osteoporoze.
Ker imam ternutno povišan TSH, imam tudi aritmije. Osebna zdravnica mi je takoj dala kontrolirati elektrolite, ki so bili vredu. Elektrolite kontrolirava približno na tri mesece, če so kakšne težave, pa bolj pogosto.
Lenča
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Zmaga je nagrada za tistega, ki vztraja toliko časa, da premaga bolečino... |
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