Drug-induced iatrogenesis refers to all the adverse effects and negative consequences on a patient's health caused by taking medication. It includes not only drug-specific adverse effects, but also drug interactions and medication errors. In other words, even if treatment is prescribed to improve health, an iatrogenic risk remains, which can compromise the effectiveness of care or lead to complications.

This problem is particularly concerning in older adults, who often take several medications simultaneously. Preventing drug-induced iatrogenesis presents a challenge for healthcare professionals such as doctors, pharmacists, and nurses. The goal is to optimize patient safety by reducing adverse effects associated with medications as much as possible.

What is drug-induced iatrogenesis?

Definition and Implications

Drug-induced iatrogenesis refers to the adverse effects that medications can cause in a patient, even when the treatment is correctly prescribed. Unlike a medical error, it concerns side effects or complications directly related to the medication, its combination with other treatments, or a mismatch between the treatment and the individual. These adverse effects can cause new, sometimes serious, symptoms and impair the patient's health. Common causes of iatrogenesis: The origins of drug-induced iatrogenesis are numerous and require rigorous monitoring to prevent complications. Here are the main causes: - An overdose, often linked to poor treatment management. This is particularly common in the elderly, due to cognitive impairment or polypharmacy. - Allergies or intolerances to certain medications, which vary from patient to patient, particularly with antibiotics, anti-inflammatories, or cancer treatments. - Slowed elimination of active substances by the liver or kidneys, leading to toxic accumulation of medications. - Drug interactions between several treatments taken simultaneously. These interactions can intensify adverse effects or reduce the effectiveness of care. - Inappropriate dosages that do not sufficiently take into account the patient's age, weight, or general condition. - Self-medication not supervised by a healthcare professional, which may interfere with prescribed treatment. These factors increase the risk of iatrogenic events, sometimes severe. Increased vigilance on the part of healthcare professionals is essential to ensure the safe and effective use of medications and prevent iatrogenic accidents. At-risk populations loading="auto">

Older People: Increased Vulnerability

Older people constitute the most vulnerable population to drug-induced iatrogenesis. This fragility is explained by several factors: the frequent presence of multiple chronic conditions, the simultaneous use of numerous medications (polypharmacy), and age-related physiological changes, such as decreased renal or hepatic function. These factors significantly increase the risk of iatrogenic events by multiplying drug interactions and making treatment management more complex.

Furthermore, the fragility of older people can be exacerbated by a lack of functional autonomy, insufficient nutritional status, or a precarious social situation. These aspects must be taken into account by healthcare professionals to adapt prescriptions and reduce risks. Other at-risk populations: In addition to the elderly, other groups are at increased risk of iatrogenic effects. These include patients with multiple comorbidities, who must manage complex treatments, as well as infants and young children, whose metabolism is still immature. Pregnant women are also affected, as their tolerance to medications may differ due to the physiological changes associated with pregnancy. Individuals with renal or hepatic insufficiency, or those with cognitive impairments affecting medication adherence, are also among the at-risk populations. Finally, patients treated in health facilities, where coordination between professionals can sometimes be insufficient, are exposed to an increased risk of medication errors. These situations require particular vigilance to minimize complications.

Principles for the Prevention of Drug-Related Iatrogenesis

Streamlining Drug Prescribing

The first essential step in preventing drug-related iatrogenesis is to optimize the prescription of medications. The treating physician must carefully assess the relevance of each treatment, taking into account the patient characteristics, such as age, renal and hepatic function, and general condition. It is important to respect the official instructions and adjust the dosage to avoid adverse effects related to an overdose or toxic accumulation.

At the same time, limiting polypharmacy plays a key role, as combining several products multiplies the risk of drug interactions and iatrogenic complications.

Promoting communication between healthcare professionals

Another cornerstone of prevention relies on effective communication and enhanced coordination between the various healthcare professionals: doctors, Pharmacists, nurses, and other specialists. The exchange of information, particularly through tools such as the pharmaceutical record, allows for an up-to-date medication review. This ensures that each healthcare professional has a complete overview of current treatments. This collaboration reduces the risk of missed doses, dosage errors, or undetected interactions. In short, the prevention of iatrogenic risk relies on collective vigilance and the effective sharing of health data to ensure safe patient care.

Prevention Strategies for the Patient

It is essential to inform patients on the proper way to follow their treatment in order to prevent any risk of drug-induced adverse events. Clear communication about the treatment goals, how to take the medication (such as timing, frequency, and dietary requirements), as well as potential side effects, plays a key role in improving treatment adherence and limiting the risk of misuse.

This approach also includes raising awareness of the dangers of self-medication, while emphasizing the importance of promptly consulting a healthcare professional if an unexpected effect occurs. Therapeutic education, often conducted by a pharmacist or nurse, can also involve the patient's family to ensure appropriate and effective support. Encouraging the use of a shared medical record: The use of a shared medical record (DMP) is an effective method for reducing the risks associated with medication-induced illness. This record centralizes all medical information and current treatments and is accessible to all healthcare professionals involved in the patient's care. This tool facilitates care coordination. In particular, it allows for the verification of drug interactions, avoidance of redundant or incompatible prescriptions, and ensures safer care. By encouraging patients to regularly update and share their records, the risk of medication errors is significantly reduced, particularly in elderly patients or those taking multiple medications.

Monitoring Methods to Minimize Risks

The Role of the Assessment Medication Review

A medication review is an essential tool for detecting, preventing, and reducing medication-related adverse events (iatrogenesis). Primarily conducted by pharmacists in collaboration with physicians, it consists of a structured and critical analysis of all medications a patient is taking.

Its objective is to assess adherence to treatment, tolerance, detect potential adverse effects, and identify at-risk situations. This process is particularly crucial for patients taking multiple medications or after hospitalization. It allows for the optimization of treatments by adjusting or removing certain medications, while taking into account the patient's clinical condition and care objectives.

In summary, medication review contributes to improved therapeutic management and the prevention of treatment-related complications.

The importance of deprescribing in certain cases

Deprescribing is a strategy aimed at reducing the number of medications when they become unnecessary or represent a significant iatrogenic risk, particularly in elderly patients. This process must be carried out with caution and in consultation with the attending physician, pharmacist, and patient to avoid abrupt or inappropriate treatment interruptions. By reducing polypharmacy, deprescribing helps limit adverse drug effects, prevent harmful interactions, and improve patients' quality of life. It is part of a comprehensive approach to preventing iatrogenic risks and optimizing medication management.

Role of the different healthcare professionals

The primary care physician

The primary care physician plays a central role in the prevention of drug-induced iatrogenesis. He is responsible for the initial prescription and the regular monitoring of treatments, taking into account the age, comorbidities and the overall health of the patient.

He must adjust the dosages, avoid unnecessary treatments and frequently reassess the appropriateness of prescriptions in order to limit polypharmacy and the risks that result from it. The physician also plays a key role in coordinating with other healthcare professionals, thus ensuring safe and well-organized medication management. Pharmacists and other healthcare professionals: Pharmacists have an essential role in preventing adverse drug reactions. They ensure the safe dispensing of treatments, conduct medication reviews, and provide advice to patients for optimal use of medications. In addition, they detect potential drug interactions that could harm patients' health. Nurses, nursing assistants, and other healthcare professionals also actively participate in monitoring and following up on treatments. They report any anomaly or adverse effect that may occur, thus contributing to the safety of care.

This collective mobilization is essential to guarantee effective prevention of iatrogenic risk in all healthcare settings.

Conclusion

Drug-induced iatrogenesis is a key public health issue, particularly among the elderly or those undergoing polypharmacy treatments. To prevent it, it is important to prioritize rational prescribing, ensure smooth communication between different healthcare professionals, and provide patients with clear education to guarantee safe medication intake. Tools such as medication review and deprescribing play a fundamental role in reducing iatrogenic risk.

Don't hesitate to actively collaborate with your doctor and pharmacist to better organize your treatment and preserve your health.

FAQ

What are the main risk factors for medication-induced iatrogenesis and how can they be identified?

Medication-induced iatrogenesis is often linked to several factors such as polypharmacy, advanced age, and the presence of chronic diseases. The classes of high-risk medications include anticoagulants, cardiovascular medications, anti-inflammatories, and psychotropic drugs.

To identify these risks, it is essential to assess the number of medications taken, to look for atypical symptoms such as falls or episodes of confusion, and to consider the clinical context.

What are the best practices to adopt to prevent medication-induced illness (iatrogenesis) when taking medications?

To prevent medication-induced illness (iatrogenesis), it is recommended to:

• Limit prescriptions to medications truly essential.
• Adjust the dosage according to renal function.
• Prioritize molecules with a good benefit/risk ratio.
• Simplify the treatment regimen as much as possible.
• Communicate clearly with the patient to ensure their understanding.
• Implement regular monitoring to verify the effectiveness and tolerability of the treatment.

How to recognize the symptoms suggestive of drug-induced iatrogenesis, particularly in the elderly?

In the elderly, symptoms suggestive of drug-induced iatrogenesis include:

• Fatigue unexplained.
• Visual disturbances.
• Skin rash.
• Gastrointestinal bleeding.
• Frequent falls.

Polypharmacy, failure to adhere to prescribed doses, and drug interactions significantly increase this risk. Any new symptom should be followed by a thorough iatrogenic examination.

What role can the patient and pharmacist play in the prevention and management of risks related to drug-induced iatrogenesis?

The pharmacist has an important role in the prevention of drug-induced iatrogenesis.

It can:

• Identify potential risks.
• Inform and support the patient.
• Conduct shared medication reviews to optimize treatments.

For their part, patients must be actively involved by:

• Following the advice given by healthcare professionals.
• Reporting any side effects.
• Strictly adhering to their treatment plan.