Prevalence of Intradialytic Complications Among Patients on Maintenance Hemodialysis: A Descriptive Cross-Sectional Study in a Secondary Referral Hospital

Chronic kidney disease is a condition where the body's filters, the kidneys, slowly lose their ability to clean the blood. When these organs fail completely, the blood must be cleaned artificially through a process called hemodialysis. In this procedure, a machine acts as an external kidney, pulling blood from the patient, filtering out waste and excess fluid, and returning it to the body. This treatment is a lifeline for millions of people worldwide, but it is not without risks. During the hours a patient spends connected to the machine, their body undergoes significant stress, and various complications can arise. These events, known as intradialytic complications, can range from feeling dizzy or nauseous to more serious issues like dangerously low blood sugar or sudden drops in blood pressure. Managing these risks is a major challenge for doctors and nurses, especially in places where medical resources are scarce and specialist doctors are not always present in the room.

In Nepal, the government has taken a significant step to help its citizens by funding free lifetime hemodialysis services. This policy has allowed dialysis units to open in smaller, secondary hospitals that serve rural and semi-urban communities. However, these facilities often operate with limited staff and infrastructure. Unlike major city hospitals, many of these centers do not have a kidney specialist, known as a nephrologist, on-site to supervise every session. Instead, the care is provided by general medical practitioners and trained nurses. To understand how safe and effective dialysis is in these specific settings, researchers from several hospitals in Nepal conducted a study at Dhading Hospital, a secondary referral center. They wanted to see what kinds of problems patients faced during their treatments and how often these issues occurred when a specialist was not directly watching over the unit.

The researchers looked back at records from a three-month period, tracking 33 patients who were receiving regular maintenance dialysis at the hospital. Over this time, they monitored a total of 764 individual dialysis sessions. The team recorded every time a patient experienced a complication, such as a drop in blood pressure, a spike in blood pressure, nausea, vomiting, or low blood sugar. They also noted the patient's age, how long they had been on dialysis, and what type of access was used to connect them to the machine, such as a surgically created connection in the arm called an arteriovenous fistula. The study found that complications were very common. Out of the 764 sessions, 110 of them, which is about 14.4 percent, involved at least one complication. Even more telling was that 26 of the 33 patients, or nearly 79 percent, experienced at least one complication during the study period. Two patients passed away during the three months, but the researchers confirmed that their deaths were due to causes unrelated to the dialysis procedure itself.

When the researchers broke down the specific types of problems, a pattern emerged that was different from what is usually seen in larger, better-equipped hospitals. The most frequent complication was low blood sugar, or hypoglycemia, which occurred in about one-third of all the complication events recorded. This was followed by high blood pressure during the treatment, low blood pressure, headaches, vomiting, and muscle cramps. Other issues like fever, chills, or heart rhythm changes happened much less often. The study also highlighted that most patients were on a schedule of dialysis twice a week, and almost all of them used an arteriovenous fistula as their connection point, which is generally considered the best type of access. The researchers noted that the high rate of low blood sugar might be linked to the fact that these patients often had poor nutrition and that the staff did not have a specialist to help adjust diabetes medications on dialysis days. Additionally, the practice of allowing patients to eat a snack during the treatment, which can help prevent low blood sugar, was not part of the routine at this hospital.

The findings suggest that while dialysis is saving lives in these resource-limited settings, the safety profile is distinct from that of major tertiary centers. The fact that low blood sugar was the leading issue, rather than low blood pressure which is more commonly reported elsewhere, points to specific challenges in this environment. These challenges include the lack of on-site specialist supervision, which may lead to difficulties in managing medication doses, and limited resources for nutritional support. The study concludes that to improve patient safety, these centers need better monitoring protocols and staff training tailored to their specific constraints. The authors emphasize that future research involving more hospitals and larger groups of patients is necessary to fully understand the risks and to develop strategies that make dialysis safer for everyone, regardless of where they receive their care.