NCT04345822

Cervical Cord Compression and Hypertension

Effect of Cervical Compressive Myelopathy on the Autonomic Nervous System and Clinical Implication

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 100 (estimated)
• Sponsor: Taipei Veterans General Hospital, Taiwan · Other Government
• Sex: All
• Age: 20 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

Myelopathy from cervical cord compression may induce hypertension and sympathetic hyperactivity. Anesthesia may suppress sympathetic activity and lead to hypotension that require vasopressor treatment. We aim to elucidate the causative factors for severe hypotension during anesthesia by prospective observational study.

Detailed description

It had been reported the cervical spondylotic myelopathy may lead to the development of hypertension. Decompression surgeries ameliorated neurological symptoms as well as the blood pressure. The cause may be the abnormality of autonomic dysfunction developed after myelopathy. However, the evidence was weak. We have noticed a tendency of hypotension during anesthesia in patients undergroing cervical spine surgeries, especially in surgeries of long levels and hypertensive patients. Thus we postulate the autonomic activity is abnormal in patients with cervical myelopathy. Sympathetic hyperactivity developed in order to maintain adequate perfusion to the cervical cord. When patients are under anesthesia, the sympathetic tone is suppressed, thus leading to severe hypotension that require the treatment of inotropic treatment. Heart rate variability (HRV) is a good index of autonomic activity. Thus we plan to Therefore we will measure the HRV (analysis of ECG) and baroreflex activity (analysis of arterial line during the anesthesia) in patients undergoing cervical spine surgeries for decompression of cord compression perioperatively. The primary end-point is the comparison of severity of cord compression between normotensive and hypertensive patients with cervical myelopathy. The secondary end-point is to compare blood pressure and HRV pre- and postoperatively. The third end-point is to elucidate the causative factors for severe hypotension during anesthesia.

Conditions

• Hypertension

Interventions

Type	Name	Description
PROCEDURE	Decompression surgery	The surgeries aim to relieve the myelopathy from cord compression

Timeline

• Start date: 2020-02-01
• Primary completion: 2021-03-31
• Completion: 2021-08-31
• First posted: 2020-04-14
• Last updated: 2020-04-14

Locations

1 site across 1 country: Taiwan