Construction of an Evaluation Index System for Interdisciplinary Core Competencies of Nurses in a Digestive Disease Specialty Center Based on the Iceberg Model: A Delphi Study

Hospitals are often organized like separate islands, where doctors and nurses specialize in one specific part of the body or one type of treatment. A patient with a complex digestive problem might see a surgeon for an operation, a gastroenterologist for an internal procedure, and a nutritionist for diet, with each team working in their own silo. However, modern medicine is moving toward a different approach: specialized disease centers. These centers bring all these experts together to treat a patient's condition as a single, continuous journey, offering a "one-stop" experience from diagnosis to recovery. This shift demands a new kind of nurse. They cannot just be experts in one narrow task; they must be able to weave together knowledge from surgery, internal medicine, and endoscopy, while also managing the emotional and social needs of a patient who is navigating a complex illness.

To understand what makes a nurse successful in this new environment, researchers often look at the "Iceberg Model." Imagine a person's professional abilities as an iceberg floating in the ocean. The small tip visible above the water represents the skills we can easily see and test, such as knowing how to operate a machine or memorizing a list of drugs. These are the "explicit" skills. But the vast, hidden mass beneath the surface represents the "implicit" qualities that drive performance: a nurse's motivation, their ability to collaborate with others, their ethical judgment, and their resilience under pressure. While the visible skills are important, the hidden part of the iceberg is often what determines whether a nurse can truly excel in a high-stakes, team-based setting. The challenge has been figuring out how to measure these hidden qualities in a way that is fair and useful for training.

A team of researchers at Mianyang Central Hospital in China set out to solve this problem for nurses working in centers dedicated to digestive diseases. They recognized that while there were general guidelines for nursing skills, there was no standardized way to evaluate the specific mix of talents needed in a specialized digestive center. These centers deal with conditions affecting the esophagus, stomach, intestines, liver, and pancreas, which are often complex and require a blend of medical and surgical care. Without a clear map of what "good" looks like in this specific setting, it is difficult to train nurses effectively or to know if they are ready for the job. The researchers decided to build a detailed evaluation system, a kind of checklist that covers both the visible skills and the hidden qualities, to guide the training and assessment of these specialists.

To create this system, the researchers first gathered a wide range of ideas from existing studies and interviews with experienced nurses. They then turned to a group of experts to refine these ideas. They selected fifteen consultants from across China, including senior nurses, doctors, and hospital administrators who had at least ten years of experience in digestive care. These experts were asked to review a long list of potential skills and rate how important each one was for a nurse in a digestive disease center. The researchers used a method called the Delphi study, which involves sending out questionnaires in rounds. After the first round, the experts gave their feedback, and the researchers adjusted the list based on the comments. The experts then reviewed the revised list in a second round to confirm their agreement. This process ensured that the final list of skills was not just the opinion of one person, but a consensus reached by a group of highly qualified professionals.

The result of this careful process was a comprehensive evaluation system made up of three layers of detail. At the top level, there are eight main categories of competency. These include the ability to perform clinical nursing tasks, think critically about patient care, educate patients, manage resources, conduct research, act ethically, pursue professional growth, and communicate effectively with others. Under these eight main headings, the system breaks down into twenty-six more specific areas, which are further divided into eighty-eight detailed indicators. For example, under the category of "Clinical Nursing Practice," the system specifies that a nurse must not only know how to perform a standard procedure but also understand the specific risks of digestive diseases, such as how to spot signs of internal bleeding or how to manage a patient who has just undergone a complex surgery.

The researchers found that the experts agreed strongly on what matters most. The system places a heavy emphasis on "interdisciplinary integrated nursing," which is the ability to connect the dots between different medical disciplines. A nurse in this setting must be able to take a treatment plan designed by a surgeon and a gastroenterologist and translate it into a daily care plan that addresses the patient's physical, emotional, and social needs. The system also highlights the importance of "critical thinking," requiring nurses to anticipate problems before they happen, such as predicting when a patient might develop a complication after an operation. Another key finding was the high value placed on "ethical and legal practice," ensuring that nurses are not just technically skilled but also understand their responsibilities to protect patient rights and maintain professional integrity.

One of the most significant aspects of this new system is that it treats the "hidden" part of the iceberg with the same seriousness as the visible skills. The evaluation includes indicators for things like a nurse's ability to handle stress, their capacity to resolve conflicts between family members and medical staff, and their willingness to seek out new knowledge and share it with colleagues. By including these softer skills in a structured way, the system acknowledges that a nurse's attitude and interpersonal abilities are just as critical to patient safety and recovery as their technical proficiency. The researchers noted that this approach helps to move away from fragmented training, where nurses learn skills in isolation, toward a more integrated model that prepares them for the reality of working in a modern, collaborative hospital.

The study concludes that this new evaluation system is a reliable tool for identifying and developing top-tier nursing talent for digestive disease centers. It provides a clear, scientific basis for deciding who is ready to work in these specialized units and what areas they need to improve. While the system was developed with experts from a specific region in China, the researchers believe it offers a valuable model that could be adapted for other types of specialized centers, such as those for cancer or neurological disorders. By making the invisible qualities of a great nurse visible and measurable, this work helps hospitals build teams that are not only skilled but also deeply capable of providing the kind of holistic, patient-centered care that complex illnesses require. The ultimate goal is to ensure that every patient in a specialized center receives care from a nurse who is fully prepared for the unique challenges of their condition.