Medications Can Cause Harm When Combined

Topic: Health

A study in Ontario found that some medications can trigger a chain of additional prescriptions. This happens when a side effect from one drug is mistaken for a new medical condition, leading to more treatment. The researchers identified 24 common prescribing cascades that can cause harm.

A recent study in Ontario, Canada, looked at how medications are prescribed to older adults.

The research team, led by Dr. Paula Rochon from the Weston and O'Born Center for Mature Women's Health at Sinai Health in Toronto, found that certain combinations of prescriptions can cause harm. This is known as a potentially inappropriate prescribing cascade (PIPC).

A PIPC occurs when a side effect caused by one medication is treated as a new health problem, leading to another prescription. For example, non-steroidal anti-inflammatory drugs (NSAIDs) are commonly used for pain but can increase blood pressure. If this change in blood pressure is mistaken for high blood pressure, a patient may receive another medication instead of having their original pain treatment reconsidered.

The researchers identified 24 common prescribing cascades that can cause harm. These include combinations like iron supplements and laxatives, hydroxymethylglutaryl coenzyme A reductase inhibitors (statins) and pain relievers, and cholinesterase inhibitors and sleep agents.

Older adults are more likely to experience PIPCs because they often take multiple medications at the same time. This can make it difficult for both clinicians and patients to determine whether a new symptom is caused by an existing prescription or not.

The study's findings suggest that healthcare providers need to consider the entire medication regimen when prescribing new treatments. They should also communicate with their patients about the potential risks of combining medications.

Why It Matters

This research matters because it can help improve drug safety in older adults, who are more likely to experience adverse reactions from medication combinations. By understanding these prescribing cascades, healthcare providers can make better decisions and reduce unnecessary treatments.

Key Facts

• The study was conducted in Ontario, Canada, and involved a large dataset of over 2 million community-dwelling older adults.
• The researchers identified 24 common prescribing cascades that can cause harm.
• Older adults are more likely to experience PIPCs because they often take multiple medications at the same time.
• The study's findings suggest that healthcare providers need to consider the entire medication regimen when prescribing new treatments.
• The research team included experts from Canada, the United States, Belgium, Italy, Israel, and Ireland.

Key Terms

Potentially Inappropriate Prescribing Cascade (PIPC)

A situation where a side effect caused by one medication is treated as a new health problem, leading to another prescription.

Non-steroidal Anti-Inflammatory Drugs (NSAIDs)

Pain relievers that can increase blood pressure.

Implications

This research matters because it can help improve drug safety in older adults, who are more likely to experience adverse reactions from medication combinations. By understanding these prescribing cascades, healthcare providers can make better decisions and reduce unnecessary treatments.