Head Injury Concerns for Dialysis Patients: What You Need to Know - Neurosurgery

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Mother hit her head?


Hello Doctor: My mother (52 years old) accidentally bumped her head against the edge of the range hood in the kitchen this morning (the edge is not sharp).
She felt pain at the moment (which lasted for about one to two minutes) but there was no external injury.
She is undergoing dialysis, specifically peritoneal dialysis, and is not on anticoagulants.
I understand that individuals on dialysis may have poorer coagulation function, and I am concerned about the risk of chronic subdural hematoma as mentioned online.
What is the likelihood of this occurring? Is it possible to conduct preventive examinations in advance? How long should we observe her to determine if there are any issues? Thank you!

Lisa, 20~29 year old female. Ask Date: 2020/09/30

Dr. Zhang Junwei reply Neurosurgery


The incidence of chronic subdural hematoma is low, and it cannot be prevented in advance; observation is required for one month.

Reply Date: 2020/09/30

More Info


When it comes to head injuries, especially in patients undergoing dialysis, there are several important considerations to keep in mind. Your concern about your mother’s head injury, particularly given her status as a dialysis patient, is valid and warrants careful attention.

Firstly, it’s essential to understand that while your mother experienced a minor head injury with no external wounds, the potential for internal complications still exists. The fact that she is undergoing peritoneal dialysis (PD) rather than hemodialysis is relevant because PD typically does not involve the use of anticoagulants, which can mitigate some risks associated with bleeding. However, patients with chronic kidney disease (CKD) may have altered coagulation profiles, which can affect their bleeding risk.

The specific concern you mentioned regarding chronic subdural hematoma (CSH) is particularly pertinent. CSH can occur when there is a minor head trauma, especially in older adults or those with underlying conditions that may predispose them to bleeding. In patients with CKD, the risk of developing such complications can be slightly elevated due to potential platelet dysfunction or other hematological changes. However, the risk is not universally high and depends on various factors, including the severity of the injury and the individual’s overall health status.

In your mother’s case, since she did not lose consciousness, did not experience prolonged pain, and has no visible external injuries, the immediate risk of significant intracranial bleeding appears low. However, it is crucial to monitor her for any delayed symptoms that may arise in the days following the injury. Symptoms to watch for include:
1. Headache: A worsening headache that does not improve with over-the-counter pain relief.

2. Nausea or Vomiting: New onset of nausea or vomiting can indicate increased intracranial pressure.

3. Confusion or Changes in Consciousness: Any alterations in her mental status, such as confusion, difficulty concentrating, or excessive drowsiness.

4. Neurological Symptoms: Weakness, numbness, or difficulty speaking can indicate a more serious issue.

If any of these symptoms develop, it would be prudent to seek medical attention immediately.
Regarding the question of whether to conduct imaging studies such as a CT scan or MRI as a precautionary measure, this decision typically depends on the clinical judgment of the healthcare provider. In general, imaging is recommended if there are concerning symptoms or if the patient has risk factors that may predispose them to complications. Given that your mother is a dialysis patient, discussing her case with her nephrologist or primary care physician would be advisable. They can assess her individual risk factors and determine whether imaging is warranted.

As for the observation period, it is generally recommended to monitor for at least 24 to 48 hours after a head injury for any new or worsening symptoms. If she remains symptom-free during this period, the likelihood of significant complications decreases, but continued vigilance is essential.

In conclusion, while the risk of chronic subdural hematoma exists, especially in patients with underlying health conditions, the immediate signs following your mother’s injury do not suggest a high risk. However, close monitoring for any delayed symptoms and consulting with her healthcare provider for personalized advice and potential imaging is the best course of action. This proactive approach will help ensure her safety and peace of mind.

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