What should be done if Penicillin G (Pen G) has precipitated and cannot be administered intramuscularly (IM)?

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Paano Haharapin ang Tumigas na Penicillin G na Hindi Maitusok ng IM

Huwag gamitin ang tumigas o nag-precipitate na Penicillin G—itapon ito at maghanda ng bagong solusyon na sariwang tinunaw. 1, 2

Bakit Hindi Dapat Gamitin ang Tumigas na Penicillin G

Ang precipitation o pagiging matigas ng Penicillin G ay nagpapahiwatig ng degradation ng gamot, na lumilikha ng mga transformation products na mas nakakapag-cause ng adverse reactions:

  • Ang mga degradation products na nabubuo kahit ilang oras lang ang penicillin sa solution ay may mas mataas na risk ng allergic sensitization at adverse reactions kumpara sa sariwang penicillin 1, 2
  • Ang pag-store ng penicillin solutions kahit sa 4°C ay nagreresulta sa formation ng degradation products na causative agents ng haemolytic anemia, neutropenia, at iba pang adverse reactions 1
  • Sa isang study, ang patients na nakatanggap ng stored penicillin solutions ay may 8.3% definite adverse reactions, habang ang nakatanggap ng freshly prepared doses ay may 0.9% lang 1

Tamang Paraan ng Paghahanda at Pagbigay

Gumawa ng bagong solusyon mula sa fresh vial:

  • Gumamit ng vials na naglalaman ng less than 10 million IU para mabigay bilang bolus dose 2
  • Itunaw ang penicillin powder immediately before administration—huwag mag-advance preparation 1, 2
  • Ibigay kaagad pagkatapos itunaw, hindi bilang slow infusion 2
  • Huwag mag-store ng reconstituted penicillin solutions kahit sa refrigerator 1, 2

Para sa Benzathine Penicillin G (IM Injection)

Kung ang problema ay sa benzathine penicillin G na tumigas sa vial:

  • Ang benzathine penicillin G ay dapat ibigay bilang IM injection sa deep muscle mass 3
  • Para sa adults: 2.4 million units IM as single dose para sa early syphilis 3
  • Para sa children: 50,000 units/kg IM (maximum 2.4 million units) 3
  • Maaaring i-dilute ang benzathine penicillin G with local anesthetics (tulad ng lidocaine) para mabawasan ang pain, pero dapat sariwang ihanda 3, 4

Mga Dapat Tandaan

  • Ang visible precipitation, cloudiness, o crystallization ay signs na hindi na dapat gamitin ang solution 1, 2
  • Ang paggamit ng degraded penicillin ay may 7-fold higher risk ng haemolytic anemia at neutropenia 1
  • Kung walang available na fresh penicillin at emergency ang situation, mag-refer sa facility na may available supply—huwag pilitin ang degraded preparation 1

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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