Cardiologist Review After Non-Cardiac Surgery Linked to Fewer Deaths & Complications

Worldwide, an estimated 4.2 million people die within 30 days of undergoing surgery each year. However, a new study suggests that proactive measures, specifically involving cardiologist evaluations, could significantly reduce this number.

The Hidden Risk After Surgery

Researchers at the University of Basel, Switzerland, investigated outcomes for patients who experienced heart damage during or immediately following surgery for a non-cardiac condition. The study focused on whether a consultation with a cardiologist impacted patient recovery.

Did You Know? The study included 14,294 patients who underwent non-cardiac surgery and were considered at high risk of perioperative myocardial infarction (heart damage).

The findings revealed that patients who were evaluated by a cardiologist were less likely to die within the following year and had a reduced risk of experiencing serious cardiac events, including heart attack, heart failure, and arrhythmia.

The Impact of an Aging Population

Doctors Christian Puelacher and Noemi Glarner, who led the study, emphasized that as populations age, the frequency of surgeries increases. Even non-cardiac surgeries place stress on the heart due to factors like anesthesia, blood loss, inflammation, and blood pressure changes. This stress can lead to perioperative myocardial infarction, or IMP.

IMP occurs in approximately 15% of high-risk patients – those with pre-existing heart or vascular conditions, or those over 65 – and often goes unnoticed because it frequently presents without symptoms. Despite being asymptomatic, IMP is a strong indicator of potential complications and mortality in the days and months following surgery.

An “Experiment” in Healthcare

To determine if post-operative complications and deaths could be prevented, the researchers leveraged a naturally occurring situation: the availability of a cardiologist for patient evaluation. The study group consisted of 14,294 patients who underwent non-cardiac surgery – such as orthopedic procedures – at the University Hospital of Basel or the Cantonal Hospital of Aarau, Switzerland.

Following surgery, all patients underwent blood tests to measure troponin levels, a protein released when the heart is damaged. The study specifically focused on 1,048 patients whose tests indicated heart damage and who were treated in the operating room.

Of these 1,048 patients, 614 (58.6%) were assessed by a cardiologist. The remaining 434 (41.4%) did not have access to a cardiologist, potentially due to factors like weekend or holiday staffing levels, or prioritization of more urgent cases. Researchers accounted for these potential influencing factors in their analysis.

Expert Insight: This study highlights the potential benefits of a collaborative approach to patient care, where surgical and cardiology teams work together to optimize post-operative outcomes, particularly for high-risk individuals.

Significant Improvements in Patient Outcomes

The comparison between the two groups revealed a 35% reduction in one-year mortality for patients seen by a cardiologist. They also experienced a 46% lower likelihood of serious cardiac problems, including heart attack, sudden heart failure, dangerous heart rhythm abnormalities, or death from heart disease. These patients were also more likely to undergo cardiac imaging and receive stronger medications.

Doctor Puelacher stated that involving a cardiologist in post-operative care after major surgery is associated with fewer cardiac complications and improved survival rates. He suggests that close collaboration between surgical and cardiac teams can improve outcomes after major surgery.

While surgery is carefully considered and risks are evaluated, complications can still occur. Detecting IMP in at-risk patients is crucial, and a cardiologist can ensure appropriate follow-up and treatment if signs of heart damage are identified.

Frequently Asked Questions

What is perioperative myocardial infarction (IMP)?

IMP is heart damage that occurs during or immediately after surgery. It affects approximately 15% of high-risk patients and often goes unnoticed because it frequently presents without symptoms.

Who is considered a high-risk patient for IMP?

High-risk patients include those with pre-existing heart or vascular conditions, or those who are 65 years or older.

What did the study find regarding cardiologist involvement?

Patients who were evaluated by a cardiologist after experiencing heart damage during or immediately following surgery had a 35% lower risk of death and a 46% lower risk of serious cardiac events within one year.

As healthcare systems navigate an aging population and increasing surgical volumes, how might these findings influence post-operative care protocols for at-risk patients?