Effect of Carotid Body Resection on Breathing Control
Author Information
Author(s): Dahan Albert, Nieuwenhuijs Diederik, Teppema Luc
Primary Institution: Leiden University Medical Center
Hypothesis
How does bilateral carotid body resection affect central CO2 sensitivity in humans?
Conclusion
Bilateral carotid body resection in three individuals led to reduced sensitivity of central chemoreceptors to CO2, followed by a gradual return, providing evidence of central plasticity within the ventilatory control system.
Supporting Evidence
- Patients lost the ability to respond to hypoxia after bilateral carotid body resection.
- The central chemoreceptor response to CO2 decreased significantly after surgery.
- Central CO2 sensitivity gradually returned to near preoperative levels over time.
Takeaway
When doctors remove the carotid bodies from three patients, their ability to sense carbon dioxide changes a lot at first but then slowly gets better over time.
Methodology
The study involved measuring ventilatory responses to hypoxia and CO2 in three patients before and after bilateral carotid body resection over a period of 2–4 years.
Limitations
The study had a limited sample size of three patients.
Participant Demographics
Two men and one woman, all carriers of the SDHD gene mutation, aged 36 to 56 years.
Digital Object Identifier (DOI)
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