What should every nurse know about acute vs. chronic conditions? While the differences might seem obvious, there’s a lot of nuance to these terms. And depending on the care area you work in, you may be more likely to see one type of condition over the other. Read on to learn the differences and similarities between an acute condition vs. chronic illness.
Acute vs. Chronic Conditions, Explained
| Condition Type | Acute Conditions | Chronic Conditions |
|---|---|---|
| Duration | Last less than 1 year, most resolving within days or weeks | Last longer than 1 year, and are often lifelong |
| Prognosis | Tend to get better over time or worsen quickly | Tend to worsen over time |
| Examples |
|
|
| Risk factors | Chronic conditions, a suppressed immune system, older age, stress, and more | Smoking, poor nutrition, excessive alcohol intake, and more |
| Treatment | Short-term, focused on recovery (e.g., a temporary cast for a broken bone or a one-time antibiotic for an infection) | Long-term, focused on preventing complications (e.g., permanent insulin correction, daily diuretics, or fluid restrictions) |
Acute conditions tend to come on quickly and last a short amount of time — think of a common cold or a stomach bug. Many acute illnesses resolve on their own. Chronic conditions take longer to develop, but once they’re present in the body, they’re often permanent. For example, it may take years of a high-sugar diet for type II diabetes to present itself, but once a patient has it, the diagnosis tends to be permanent.
Which of these disease categories leads to more illness overall? According to the Centers for Disease Control (CDC), chronic diseases are the leading causes of death, disability, and healthcare costs in the U.S. Three out of four Americans have at least one chronic disease, and more than half have two or more.
Chronic conditions grow more common as the population ages. Here’s a breakdown:
- 18–34 years: About 60% have at least one chronic condition, with these rates on the rise.
- 35–64 years: Over 75% have at least one chronic condition.
- 65 years and up: More than 90% have at least one chronic condition.
Why Are Chronic Conditions More Common?
It may sound counterintuitive, but public health improvements have led to the increased prevalence of chronic conditions. People are living longer than ever before, long enough to develop age-associated illnesses like heart disease.
Until the early 20th century, acute infectious diseases were a much bigger problem. Around this time, improvements in nutrition, sanitation, medicine, and other initiatives caused a massive jump in average life expectancy. By 1950, heart disease was the leading cause of death in the U.S. Even during the COVID-19 pandemic, heart disease and cancer still represented almost 40% of U.S. deaths in 2022.
Age is one of the strongest risk factors for chronic illness, and between 1960 and 2021, the average age jumped by nearly a decade. But age isn’t the only factor — genetics, less active lifestyles, changes in food, lack of care access, and many other issues contribute to chronic illnesses.
It may be tempting to view chronic conditions as a result of intentional choices or noncompliance. But research shows that Social Determinants of Health are also closely related to outcomes — meaning that the context of a patient’s socioeconomic and social environment cannot be discounted. Learn more about health inequity and how to address it.
When Chronic Conditions Become Acute
While they tend to be lifelong, most chronic conditions also cause acute exacerbations. For example, someone with diabetes may present with diabetic ketoacidosis after being sick for a week. A patient with COPD may experience a worsening of symptoms in the form of shortness of breath and coughing, which may require hospitalization.
Patients in an acute exacerbation are often seen in the ER, and they’re at high risk for readmission. In these cases, it’s the acute care team that manages the exacerbation, but it’s the outpatient and post-acute teams that aim to keep patients from being readmitted. Referring these patients for follow-up care is essential. Chronic conditions require proactive and consistently coordinated care to achieve the best outcomes.
When Acute Conditions Become Chronic
On the other hand, what begins as an acute condition can also become chronic. For example, a patient with diabetes may have an acute surgical wound that becomes a chronic one when it takes too long to heal. Acute infections can lead to chronic pain or changes in function, such as a loss of smell after COVID-19.
These issues can be difficult because patients are often surprised by their lasting symptoms, and they need additional care and support to adjust. Having one or more chronic conditions can weaken the body, making it harder to recover from acute problems. Again, adequate support and specialty referrals are essential for these patients.
Acute vs. Chronic Conditions: Implications for Nurses
Because chronic illnesses represent a larger portion of the care in the U.S., you’re more likely to see them as a nurse. Acute care nurses in med-surg, critical care, oncology, and other areas see chronic conditions in their patient population, and entire nursing units may be dedicated to one issue, such as heart failure.
Chronic conditions are typically slower to diagnose, making treatment initiation slower as well. This can be very frustrating for patients, who may know something is wrong long before their medical team does. It’s a nurse’s duty to advocate for these patients, ensuring that patients with both acute and chronic illnesses receive the care they deserve.
Chronic conditions are one of the many reasons critical thinking is so important as a nurse.
If your patient is admitted for heart failure exacerbation but they also have chronic kidney issues, a standard diuretic treatment regimen may not be appropriate for them. You’ll need to look at the whole patient, not just a single issue, to treat them appropriately.
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