Volatile Hypertension Following Anterior Cervical Discectomy and Fusion: A Case Report

Baroreflex Failure After Anterior Cervical Discectomy and Fusion: A Case Report

CASE

A 58-year-old man underwent anterior cervical discectomy and fusion (ACDF) for the treatment of cervical spondylotic myelopathy. Immediately after surgery, the patient experienced elevated blood pressure with a fall in oxygen saturation which prevented extubation. He required admission to the critical care unit and was diagnosed with baroreflex failure syndrome (BFS). He was managed with a 4-drug medical regimen and stabilized by the second postoperative day.

CONCLUSION

BFS should be considered in the setting of sudden sharp elevation in blood pressure after ACDF. Early diagnosis and initiation of appropriate pharmacotherapy may reduce patient morbidity and mortality.

Effects of Decompressive Cervical Surgery on Blood Pressure in Cervical Spondylosis Patients With Hypertension: A Time Series Cohort Study

BACKGROUND

The blood pressure of cervical spondylosis (CS) patients with hypertension often returns to normal after decompressive cervical surgery (DCS). However, the effect of DCS on the blood pressure of patients with CS has not been rigorously studied.

METHODS

We recruited 50 consecutive CS patients with hypertension from 2014-2017 and investigated the changes in blood pressure after DCS using a time series design. Ambulatory blood pressure monitoring (ABPM) was performed at 3 and 0 days before DCS and at 30 and 90 days after DCS. The primary outcome was mean 24-hour systolic blood pressure (SBP). Secondary outcomes included mean 24-hour diastolic blood pressure (DBP), office blood pressure, and the percentage of patients on antihypertensive medication. Paired t test was used for assessing the changes in blood pressure over time and a McNemar test was used for comparison among different medication groups.

RESULTS

The mean 24-hour SBP did not vary significantly among 4 time points (134.5 ± 14.7, 132.8 ± 14.7, 131.5 ± 13.3, and 133.2 ± 14.6, respectively; P = .42). The mean 24-hour DBP showed a similar trend. However, mean office SBP/DBP decreased significantly from 142.5/82.0 mm Hg before surgery to 127.3/76.6 mm Hg after surgery (both P < .01). The corresponding percentage of patients on antihypertensive medication decreased significantly, from 84% to 54% (P < .01).

CONCLUSIONS

This study confirmed previous findings of reduction in office blood pressure associated with DCS among CS patients with hypertension. However, this was not confirmed by multiple-time series of 24-hour ABPM.

LEVEL OF EVIDENCE

3.