Drug-induced iatrogenesis refers to all 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 when treatment is prescribed to improve health, there remains a risk of iatrogenic harm, which can compromise the effectiveness of care or lead to complications.

This problem is particularly concerning among older adults, who often take multiple medications at the same time. Preventing medication-related adverse events poses a challenge for healthcare professionals such as doctors, pharmacists, and nurses. The goal is to optimize patient safety by minimizing medication-related adverse effects 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 involves 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 causes of drug-induced iatrogenesis are numerous and require close 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, which can sometimes be 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 Adults: Increased Vulnerability

Older adults are the population most vulnerable to drug-induced adverse events. This vulnerability is due to several factors: the frequent presence of multiple chronic conditions, the concurrent use of numerous medications (polypharmacy), and age-related physiological changes, such as decreased kidney or liver function. These factors significantly increase the risk of adverse events by increasing the likelihood of drug interactions and making treatment management more complex.

Furthermore, the frailty of older adults can be exacerbated by a lack of functional independence, poor nutritional status, or a precarious social situation. Healthcare professionals must take these factors into account when adjusting prescriptions and mitigating 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 healthcare 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 Adverse Events

Streamlining Prescription Practices

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

At the same time, limiting polypharmacy is crucial, as combining multiple medications increases the risk of drug interactions and iatrogenic complications.

Promoting communication among healthcare professionals

Another cornerstone of prevention is effective communication and improved coordination among various healthcare professionals: doctors, pharmacists, nurses, and other specialists. The exchange of information, particularly through tools such as the medication record, enables 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, dosing errors, or undetected drug 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 Patients

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

This approach also involves raising awareness of the dangers of self-medication, while emphasizing the importance of promptly consulting a healthcare professional if an unexpected side effect occurs. Therapeutic education, often provided 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, the 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 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 involves a structured and critical analysis of all medications a patient is taking.

Its objective is to assess treatment adherence and tolerability, detect potential adverse effects, and identify situations that pose a risk. This process is particularly crucial for patients taking multiple medications or following hospitalization. It enables the optimization of treatment regimens by adjusting or discontinuing certain medications, while taking into account the patient’s clinical condition and care goals.

In summary, medication reviews help improve treatment management and prevent 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 pose 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 interruptions in treatment. 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.

The Role of Different Healthcare Professionals

The primary care physician

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

He must adjust dosages, avoid unnecessary treatments, and frequently reassess the appropriateness of prescriptions in order to limit polypharmacy and the risks associated with it. The physician also plays a key role in coordinating with other healthcare professionals, thereby ensuring safe and well-organized medication management. Pharmacists and other healthcare professionals: Pharmacists play an essential role in preventing adverse drug reactions. They ensure the safe dispensing of medications, conduct medication reviews, and provide advice to patients on the optimal use of medications. In addition, they identify 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 anomalies or adverse effects that may occur, thereby contributing to the safety of care.

This collective effort is essential to ensure effective prevention of iatrogenic risks in all healthcare settings.

Conclusion

Drug-induced iatrogenesis is a major public health issue, particularly among the elderly or those taking multiple medications. To prevent it, it is important to prioritize rational prescribing, ensure effective communication among healthcare professionals, and provide patients with clear information to ensure safe medication use. Tools such as medication reviews and deprescribing play a key role in reducing the risk of iatrogenic harm.

Don't hesitate to work closely with your doctor and pharmacist to better manage your treatment and maintain 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-inflammatory drugs, and psychotropic drugs.

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

What are the best practices for preventing medication-induced illness (iatrogenesis) when taking medications?

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

• Limit prescriptions to medications that are truly essential.
• Adjust the dosage based on renal function.
• Prioritize molecules with a favorable benefit-risk ratio.
• Simplify the treatment regimen as much as possible.
• Communicate clearly with the patient to ensure they understand.
• Implement regular monitoring to assess the effectiveness and tolerability of the treatment.

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

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

• Unexplained fatigue.
• 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 medical evaluation.

What role can patients and pharmacists play in preventing and managing risks associated with drug-induced iatrogenesis?

Pharmacists play an important role in preventing drug-induced adverse events.

It can:

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

For their part, patients must take an active role by:

• Following the advice of healthcare professionals.
• Reporting any side effects.
• Strictly following their treatment plan.