Question

I am a breastfeeding mother and i want to know if it is safe to use Tc 99m mercaptoacetyltriglycine? Is Tc 99m mercaptoacetyltriglycine safe for nursing mother and child? Does Tc 99m mercaptoacetyltriglycine extracts into breast milk? Does Tc 99m mercaptoacetyltriglycine has any long term or short term side effects on infants? Can Tc 99m mercaptoacetyltriglycine influence milk supply or can Tc 99m mercaptoacetyltriglycine decrease milk supply in lactating mothers?

Tc 99m mercaptoacetyltriglycine lactation summary

Tc 99m mercaptoacetyltriglycine usage has low risk in breastfeeding
  • DrLact safety Score for Tc 99m mercaptoacetyltriglycine is 3 out of 8 which is considered Low Risk as per our analyses.
  • A safety Score of 3 indicates that usage of Tc 99m mercaptoacetyltriglycine may cause some minor side effects in breastfed baby.
  • Our study of different scientific research indicates that Tc 99m mercaptoacetyltriglycine may cause moderate to no side effects in lactating mother.
  • Most of scientific studies and research papers declaring usage of Tc 99m mercaptoacetyltriglycine low risk in breastfeeding are based on normal dosage and may not hold true for higher dosage.
  • While using Tc 99m mercaptoacetyltriglycine We suggest monitoring child for possible reactions. It is also important to understand that side effects vary largely based on age of breastfed child and time of medication in addition to dosage.
  • Score calculated using the DrLact safety Version 1.2 model, this score ranges from 0 to 8 and measures overall safety of drug in lactation. Scores are primarily calculated using publicly available case studies, research papers, other scientific journals and publically available data.

Answer by Dr. Ru: About Tc 99m mercaptoacetyltriglycine usage in lactation

El Tecnecio 99 metaestable (Tc 99m) es un isótopo radiactivo que emite radiación gamma. Su semivida de desintegración radiactiva es de 6,0 horas.Tras marcaje radiactivo con una solución de pertecnetato (99mTc) de sodio, la solución de tecnecio (99mTc) mertiatida obtenida es utilizada en gammagrafía para el diagnóstico de enfermedad nefrourológica. El 0,07% de la dosis administrada se excreta en leche materna (Leide 2016, Liepe 2016). Los tiempos de interrupción de lactancia o de evitar contacto cercano se calculan para que el lactante no esté expuesto a más de 1 milisievert (1 mSv = 0,1 rem) de radiación (ICRP 2008, Howe 2008, Stabin 2000). Un adulto recibe entre 5 y 10 mSv anuales procedentes de la radiación ambiental. Los principales organismos reguladores de administración de sustancias radiactivas y expertos consideran que se puede amamantar inmediatamente después de una prueba diagnóstica con Tc 99m mertiatida (ARSAC 2016, ICRP 2008, Howe 2008, Stabin 2000, Evans 1993). Algunos organismos (ARSAC 2016, ICRP 2008) consideran más prudente interrumpir la lactancia durante unas 4 horas, extrayéndose una vez la leche y pudiendo ofrecer, en su lugar, leche previamente extraída y almacenada en frigorífico antes de la prueba. La leche extraída tras la toma se puede congelar y emplear una vez pasadas 10 vidas medias radioactivas: 10 x 6,0 = 60 horas = 3 días (Hale 2017, p. 2019). No es preciso evitar el contacto cercano con el lactante (Mountford 1999).
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