Principles of medical ethics: Autonomy, beneficence, nonmaleficence, and justice

Principalism is an approach to bioethics that helps guide ethical decision making by using the four principles of autonomy, beneficence, non-malleficence, and justice.

These principles help clinicians think through difficult decisions when patient and family preferences, clinical recommendations, risks, benefits, and limited resources don't align.

Let's start with autonomy. Autonomy refers to patient's right to self-determination, meaning the right to make decisions about their own body, health and care.

Autonomy depends on decision making capacity. A patient must be able to understand the information presented, appreciate how it applies to their situation, reason through their options, and clearly communicate a choice.

Just as important, that decision must be made voluntarily without coercion, pressure, or manipulation from clinicians, family members, or others.

In practice, it's important to make sure patients with decision making capacity have the information needed to make an informed decision.

This is where informed consent and informed refusal come in. Informed consent occurs when a patient chooses a treatment after understanding their diagnosis, the proposed intervention, the risks and benefits, and any reasonable alternatives.

On the flip side, informed refusal means a patient can decline a recommended treatment or choose no treatment after understanding the consequences of that decision.

Both of these depend on clear communication. Patients need information that is accurate, complete, and explained in a way that they can understand.

That's where truth telling plays a key role. Clinicians have an ethical obligation to be honest about diagnoses, prognosis, and treatment options.

Confidentiality also supports autonomy. Patients are more likely to share sensitive information when they trust that it will be kept private.

This trust allows them to make more informed and meaningful decisions about their care. Now autonomy is very important and should be respected in most situations.

However, there are also situations where autonomy may be limited. For example, in emergencies when immediate treatment is needed and the patient cannot provide consent.

When patients request non-standard interventions, when a patient lacks decision-making capacity, or when a decision poses a serious risk of harm to others.

Here's a legal connection. Patients have the legal right to accept or refuse medical treatment as long as they have decision making capacity.

However, clinicians are not legally required to provide treatments that are not medically appropriate or outside the standard of care.

All right, let's turn to the principle of beneficence. Beneficence means to do good by acting in the best interest of the patient.

It focuses on promoting well-being, relieving suffering, preventing harm, and supporting their quality of life. In clinical practice, beneficence goes beyond treating disease.

It includes addressing pain, supporting mental and emotional health, and considering how a patient's condition and treatment will affect their daily life and future well-being.

Importantly, beneficence is not just about what clinicians think is best. It also requires understanding what matters most to the patient.

This means considering the patient's values, goals, and definition of quality of life when making recommendations. Now that we've defined autonomy and beneficence, let's look at how they can conflict.

Alma is a 62-year-old woman with end-stage renal disease and heart failure with reduced ejection fraction. She presents to the emergency department reporting worsening shortness of breath and fatigue.

She has been receiving hemodialysis for the past 3 years. The clinician recommends continuing dialysis and treating her fluid overload with medications and possible escalation of care.

Alma asks what happens if I stop dialysis. The clinician explains, if dialysis stops, your kidney disease will progress and you will likely die soon.

We can talk about what comfort focused care would look like if that's what you want. Alma is alert, oriented, and shows a full understanding of her condition.

She responds, I understand. I'm tired.

I don't want more dialysis. I want to go home and be comfortable.

Her family adamantly disagrees. You can't just let her die, please do everything.

This is a conflict between autonomy and beneficence. From the family and health care team's perspective, continuing dialysis would prolong life, so it supports beneficence, but the patient has capacity and clearly refuses dialysis, so autonomy should be respected.

A patient centered approach would include acknowledging the family's distress, confirming the patient's decision making capacity, clarifying the patient's goals, and discussing options such as palliative or hospice care.

The health care team can all help support communication and make sure the patient and family understand the plan. For example, a team member might say, I hear how much you love her.

Right now she's able to make her own medical decisions. Our job is to make sure she understands the options and support care that matches her goals.

Moving on, let's talk about non-malleficence, which means avoiding harm. It's often summarized as do no harm, but in clinical practice it's not always that simple.

Most treatments we use, including medications, procedures, and surgeries, carry some degree of risk. Medications can have side effects.

Procedures can lead to complications, and even routine interventions can create unintended harm. Because of this, non-malleficence is not about avoiding all risks, but about minimizing unnecessary harm and carefully weighing risks against potential benefits.

The reason non-malleficence is called out as distinct from beneficence is that as far back as Hippocratic times, physicians recognized the moral difference between harms caused by disease and diatrogenic harms caused by clinicians.

The moral stakes simply feel higher when we are the ones that harm the patient. In practice, clinicians apply non-malleficence by choosing the safest effective option, avoiding interventions that are unlikely to help, and continuously monitoring for adverse effects.

There are situations where non-malleficent and beneficence may come into tension. A treatment may help the patient, but also carry a risk of harm.

One important concept that helps guide these situations is the principle of double effect. The principle of double effect refers to situations where a single action has two foreseeable outcomes one intended beneficial effect and one unintended harmful effect.

The key is that the intention is to achieve a good outcome, not to cause harm, even if some risk is expected. Let's look at a case that illustrates this in clinical practice.

George, a 56-year-old man with stage 4 metastatic lung cancer, is receiving home hospice care. His pain is worsening despite receiving his prescribed pain medication.

The hospice nurse contacts the physician who tells her, I'm going to increase the morphine dose and check back frequently to see how George is doing.

The nurse is worried and asks, could more morphine make him stop breathing? The physician acknowledges that this is an important concern and explains that when opioids are carefully adjusted to match symptoms they are appropriate for severe pain at the end of life, even if they can also hasten death.

The physician responds, we will titrate the dose, monitor for sedation and breathing changes, and document that the goal is comfort, not hastening death.

As you can see, the intended effect is pain relief, but a possible unintended effect is sedation or respiratory depression, meaning there is a double effect.

Beneficence supports treating the patient's severe pain, while non-malleficence requires careful dosing, monitoring, and reassessment.

The ethically sound approach is to avoid withholding appropriate symptom relief while also avoiding unsafe or excessive dosing.

Finally, let's turn to justice. Justice focuses on fairness in health care.

It asks whether patients are being treated fairly and whether health care resources are being distributed in an appropriate and ethical way.

In practice, justice means thinking beyond a single patient and considering how decisions affect groups of people, especially when resources are limited.

This includes situations like access to care, allocation of treatments, and prioritization of patients in urgent settings to better understand justice, it helps to compare equality and equity.

Equality means giving everyone the same resources or treatment regardless of the situation. Equity, on the other hand, means adjusting care based on differences in need, risk, and barriers in order to achieve fair outcomes.

In health care, equity is often more appropriate than strict equality. For example, imagine 3 patients arrive at the emergency department.

The first patient has a sore throat. Shortly after, a second patient arrives with a deep laceration that needs stitches.

And finally, a third patient arrives with crushing chest pain and shortness of breath. Equality would mean seeing them in the exact order they arrived.

However, equity means recognizing that the patient with chest pain has a possible acute coronary syndrome and needs immediate evaluation because the risk of serious harm is much higher, even though they arrived last.

All right, as a quick recap, there are 4 principles of medical ethics. Autonomy means respecting a patient's right to self-determination by making informed decisions about their own care.

Beneficence means to do good by acting in the interest of the patient, promoting their well-being, and relieving suffering.

By contrast, non-malleficence means avoiding unnecessary or disproportionate harm we may cause. Finally, justice focuses on fairness and health care.

It includes the ethical distribution of resources and access to