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Background: Both selective and nonselective α-blockade are used for preoperative preparation in patients with pheochromocytomas and paragangliomas (PPGLs). However, the effects of different types of α-blockade on perioperative outcomes remain inconclusive. This study was designed to assess the association between the choice of α-blockade and the amount of intraoperative hypertension in patients undergoing surgery for PPGLs., Methods: In this propensity-matched retrospective cohort study, data of patients who received either selective or nonselective α-blockade preoperatively and underwent surgery for PPGLs were collected. The primary end point was the time-weighted average above the systolic blood pressure (SBP) of 160 mm Hg (TWA-SBP >160 mm Hg), which was calculated as the total area of the SBP-time curve above the SBP of 160 mm Hg and divided by anesthesia duration., Results: A total of 286 patients were included in analysis; of them, 156 received selective α-blockade and 130 nonselective α-blockade. After propensity score matching, 89 patients remained in each group. Patients who received nonselective α-blockade had a lower TWA-SBP >160 (median 0.472 mm Hg, interquartile range [IQR], 0.081-1.300) versus those who received selective α-blockade (median 1.114 mm Hg, IQR, 0.162-2.853; median difference -0.391, 95% confidence interval [CI], -0.828 to -0.032; P = .016); they also had a lower highest SBP during surgery (193 ± 24 mm Hg versus 205 ± 34 mm Hg; mean difference -12, 95% CI, -20 to -3; P = .008). Postoperative outcomes did not differ significantly between the 2 groups., Conclusions: For patients undergoing surgery for PPGLs, preoperative nonselective α-blockade was associated with less intraoperative hypertension when compared with selective α-blockade.

Background: Preoperative intravenous rehydration for patients with pheochromocytomas and paragangliomas (PPGLs) is widely used in many medical centers, but its usefulness has not been well evaluated. The objective of this study was to compare the perioperative hemodynamics and early outcome between patients who received preoperative intravenous rehydration and those without for resection of PPGLs., Methods: In this retrospective propensity score-matched cohort study, the data of patients who underwent surgery for PPGLs were collected. Patients were divided into two groups depending on whether they received or did not receive intravenous rehydration preoperatively. The primary endpoint was intraoperative hypotension, described as the cumulative time of mean arterial pressure < 65 mmHg averaged by surgery duration., Results: Among 231 enrolled patients, 113 patients received intravenous rehydration of ≥2000 ml daily for ≥2 days before surgery and 118 patients who did not have any intravenous rehydration before surgery. After propensity score matching, 85 patients remained in each group. The median cumulative time of mean arterial pressure < 65 mmHg averaged by surgery duration was not significantly different between rehydrated patients and non-rehydrated patients (median 3.0% [interquartile range 0.2-12.2] versus 3.8% [0.0-14.2], median difference 0.0, 95%CI - 1.2 to 0.8, p = 0.909). The total dose of catecholamines given intraoperatively, volume of intraoperative fluids, intraoperative tachycardia and hypertension, percentage of patients who suffered from postoperative hypotension, postoperative diuretics use, and postoperative early outcome between the two groups were not significantly different either., Conclusions: For patients with PPGLs, preoperative intravenous rehydration failed to optimize perioperative hemodynamics or improve early outcome.

Background: Prolonged hypotension is a common complication after surgery for pheochromocytomas and paragangliomas (PPGLs). It places patients at an increased risk of major morbidities and even death. The objective of the study was to investigate the risk predictors of prolonged hypotension in patients undergoing open surgery for PPGLs., Methods: The present study adopted a retrospective, single-center design. Patients who underwent open surgery for PPGLs were enrolled from January 1, 2002, to December 31, 2018, at Peking University First Hospital. Perioperative variables were screened from patients' electronic medical records. Prolonged hypotension was defined as hypotension that required continuous catecholamine support for at least 30 min to maintain a systolic blood pressure of > 90 mmHg after surgery., Results: A total of 162 patients were included in the study. Fifty-two patients (31.1%) had prolonged hypotension with a median vasopressor support duration of 14 h (IQR = 4-30 h). Body mass index <24 kg/m 2 (OR = 3.015, 95% CI 1.217-7.467; P = 0.017), larger tumor size (OR = 1.146, 95% CI 1.014-1.295; P = 0.029), and higher plasma norepinephrine concentration (OR = 1.053, 95% CI 1.019-1.087; P = 0.002) were associated with prolonged hypotension. Patients with prolonged hypotension had a higher incidence of complication, were more frequently admitted to the intensive care unit, underwent mechanical ventilation for a longer duration, and had a longer postoperative hospital stay when compared to those without., Conclusion: Body mass index < 24 kg/m 2 , larger tumor size, and higher plasma norepinephrine concentration are independent risk predictors of prolonged hypotension in patients undergoing open surgery for PPGLs.

Background: Dramatic hemodynamic fluctuation occurs frequently during surgery for pheochromocytoma or paraganglioma. However, the criteria of intraoperative hemodynamic instability vary widely, and most of them were defined arbitrarily but not according to patients' prognosis. The objective was to analyze the relationship between different thresholds and durations of intraoperative hyper-/hypotension and the risk of postoperative complications in patients undergoing surgery for pheochromocytoma or paraganglioma., Methods: This was a retrospective single-center cohort study performed in a tertiary care hospital from January 1, 2005 to December 31, 2017. Three hundred twenty-seven patients who underwent surgery for pheochromocytoma or paraganglioma, of which the diagnoses were confirmed by postoperative pathologic examination, were enrolled. Those who were less than 18 years, underwent surgery involving non-tumor organs, or had incomplete data were excluded. The primary endpoint was a composite of the occurrence of AKI or other complications during hospital stay after surgery. Multivariate Logistic regression models were used to analyze the association between different thresholds and durations of intraoperative hyper-/hypotension and the development of postoperative complications., Results: Forty three (13.1%) patients developed complications during hospital stay after surgery. After adjusting for confounding factors, intraoperative hypotension, defined as systolic blood pressure (SBP) of ≤95 mmHg for ≥20 min (OR 3.211; 99% CI 1.081-9.536; P = 0.006), SBP of ≤90 mmHg for ≥20 min (OR 3.680; 98.8% CI 1.107-12.240; P = 0.006), SBP of ≤85 mmHg for ≥10 min (OR 3.975; 98.3% CI 1.321-11.961; P = 0.003), and SBP of ≤80 mmHg for ≥1 min (OR 3.465; 95% CI 1.484-8.093; P = 0.004), were associated with an increased risk of postoperative complications. On the other hand, intraoperative hypertension was not significantly associated with the development of postoperative complications., Conclusions: For patients undergoing surgery for pheochromocytoma or paraganglioma, intraoperative hypotension is associated with increased postoperative complications; and the harmful effects are level- and duration-dependent. The effects of intraoperative hypertension need to be studied further.