20 topics with brief reviews: definitions, key facts, and class questions.
This section is dedicated to antiseptics and disinfectants — non-selective agents that destroy microorganisms in living tissues and on environmental objects. It establishes the foundation for understanding local infection control and the introductory principles of chemotherapy.
The material covers all key groups: from halogens (including chlorhexidine, iodophors, and sodium hypochlorite) and oxidizing agents (hydrogen peroxide, potassium permanganate) to alcohols, aldehydes, acids, and alkalis. We examine heavy metal salts, aromatic compounds, dyes, detergents, as well as synthetic (nitrofuran derivatives) and herbal antiseptics.
During classes and exams, professors most frequently ask about the difference between antisepsis and disinfection, the mechanism of protein denaturation by ethanol and heavy metal salts, and the specific applications of iodophors and oxidizing agents. At the end of the section, a summary guide of antiseptics is available for a quick review before your credit test.
What exactly are herbal preparations based on within the antiseptic group?
These preparations are based strictly on medicinal plant extracts. As emphasized in the classification, they are not produced from mineral raw materials, synthetic compounds, or products of microbiological synthesis.
Which compounds are the focus of pharmacology in this section?
The main focus of the topic is precisely on chlorine-containing substances.
To which chemical group does chlorhexidine belong?
This is a dichlorinated biguanide derivative. In exams, it is important not to confuse it with iodophors, phenol derivatives, or quaternary ammonium compounds.
Why is it advisable to clean a wound of blood before applying sodium hypochlorite?
The antimicrobial activity of the drug decreases significantly in the presence of biological substrates such as blood and proteins.
Why must a 5% alcoholic solution of iodine not be poured directly into a wound?
Due to their pronounced irritant and cauterizing effect. The contact of active iodine with exposed tissues causes protein coagulation and a chemical burn, which worsens the trauma. Only the wound edges should be treated.
How are iodophors superior to a standard alcoholic iodine solution?
They are water-soluble, do not burn mucous membranes, leave no persistent stains on the skin, and act significantly longer due to the gradual release of the active substance from the complex with surfactants.
Master the entire topic in the «Pharmacology» course
This is a summary. The course covers everything tested in classes and exams.
5,304 pages of study guides on all topics
Assignments and quizzes after every topic — just like in a colloquium