Etiotropic Treatment: Targeting the Pathogen
Etiotropic treatment is the foundation of combating infection. Its primary target is the infectious agent itself. Therapy is directed at exerting a direct effect on the pathogen using specific groups of drugs.
Depending on the type of pathogen, four main categories of medications are distinguished:
- Antibacterial drugs. These include a broad spectrum of agents: classic antibiotics and sulfonamides, quinolones, diaminopyrimidines, as well as nitroimidazole and nitrofuran derivatives. Additionally, bacteriophages and specific immunoglobulins (Ig) are successfully used to combat bacteria.
- Antiviral drugs. To suppress viral activity, immunoglobulins, interferons (IFN), adamantane derivatives, nucleotide analogues, as well as protease inhibitors, reverse transcriptase inhibitors, and DNA polymerase inhibitors are used.
- Antifungal agents. These are represented by pharmacological groups such as azoles, allylamines, flucytosine, and griseofulvin.
- Antiprotozoal drugs. These target protozoan microorganisms. This extensive group includes sulfonamides, sulfones, chloroquine, sulfadoxine, quinine, artemisinin, and metronidazole.
Pathogenetic Treatment: Interrupting the Chain of Disruptions
The goal of pathogenetic treatment is the reliable blockade of key links in the mechanism of the infectious process. Even if the pathogen has already been eradicated, the cascades of pathological reactions it triggered may continue to damage the patient's body.
The main directions of pathogenetic therapy include five critical aspects:
- Body detoxification. To eliminate accumulated toxins, antitoxic sera, hemodilution methods (blood dilution), and extracorporeal purification methods—hemodialysis and plasmapheresis—are used.
- Anti-inflammatory therapy. Based on suppressing excessive mechanisms of inflammation caused by the infection.
- Immunotherapy and immunocorrection. Involves the use of specific sera and vaccines, adaptogens, immunomodulators, and desensitizing measures to restore an adequate immune response.
- Normalization of organ and system functions. Aims at targeted correction of disorders affecting the cardiovascular, respiratory, digestive, and nervous systems that arose due to the infection.
- Correction of basic homeostasis parameters. The physician restores acid-base balance (ABB), electrolyte balance, blood volume, and rheological properties of circulating blood, and normalizes blood gas partial pressures (pO2, pCO2).
Symptomatic Therapy: Symptom Relief
Symptomatic therapy does not directly affect the cause or complex mechanisms of the disease, but its goal is crucial: relieving the patient's condition. It aims to eliminate distressing, painful sensations that exhaust the patient and worsen the overall course of the disease.
Symptomatic support measures include:
- Pain-relieving drugs (analgesics) and specific agents that relieve headaches.
- Medications that relieve feelings of emotional tension or fear, which is critically important for stabilizing the patient's nervous system.
- Sleeping aids to ensure proper rest and physical recovery of the body.