title: Comparison of two preoperative medical management strategies for laparoscopic resection of pheochromocytoma.
abstract: OBJECTIVE
  To compare the intraoperative and postoperative course of patients undergoing laparoscopic pheochromocytoma resection at 2 institutions (Mayo Clinic and Cleveland Clinic) with differing approaches to preoperative preparation. Patients undergoing adrenalectomy for pheochromocytoma typically undergo a preoperative preparation to normalize their blood pressure and intravascular volume. However, no consensus has been reached regarding the best preoperative preparation regimen.
  
  
  METHODS
  A retrospective chart review was performed of 50 Mayo Clinic patients and 37 Cleveland Clinic patients who had undergone laparoscopic pheochromocytoma resection. Mayo Clinic predominantly used the long-lasting nonselective alpha(1,2) antagonist phenoxybenzamine, and Cleveland Clinic predominately used selective alpha(1) blockade. Data regarding the intraoperative hemodynamics and postoperative complications were collected.
  
  
  RESULTS
  Almost all patients at Mayo Clinic received phenoxybenzamine (98%). At Cleveland Clinic, the predominant treatment (65%) was selective alpha(1) blockade (doxazosin, terazosin, or prazosin). Intraoperatively, patients at Cleveland Clinic had a greater maximal systolic blood pressure (209 +/- 44 mm Hg versus 187 +/- 30 mm Hg, P = .011) and had received a greater amount of intravenous crystalloid (median 5000, interquartile range 3400-6400, versus median 2977, interquartile range 2000-3139; P <.010) and colloid (median 1000, interquartile range 500-1000, versus median 0, interquartile range 0-0; P <.001). At Mayo Clinic, more patients had received phenylephrine (56.0% versus 27.0%, P = .009). No differences were found in the postoperative surgical outcomes, and the hospital stay was comparable between the 2 groups.
  
  
  CONCLUSIONS
  Differences in the preoperative preparation and intraoperative management were associated with differences in intraoperative hemodynamics but not with clinically significant outcomes in patients undergoing laparoscopic adrenalectomy for pheochromocytoma at 2 large tertiary care centers.
authors.affiliation: Department of Anesthesiology and Anesthesia Clinical Research Unit, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA.
authors.forename: Toby N
authors.initials: TN
authors.lastname: Weingarten
authors.forename: Juan P
authors.initials: JP
authors.lastname: Cata
authors.forename: Jerome F
authors.initials: JF
authors.lastname: O'Hara
authors.forename: David J
authors.initials: DJ
authors.lastname: Prybilla
authors.forename: Tasha L
authors.initials: TL
authors.lastname: Pike
authors.forename: Geoffrey B
authors.initials: GB
authors.lastname: Thompson
authors.forename: Clive S
authors.initials: CS
authors.lastname: Grant
authors.forename: David O
authors.initials: DO
authors.lastname: Warner
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Bravo
authors.forename: Juraj
authors.initials: J
authors.lastname: Sprung
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000601:surgery*; D000315:Adrenalectomy / Q000379:methods; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D010673:Pheochromocytoma / Q000601:surgery*; D011300:Preoperative Care / Q000379:methods*; D012189:Retrospective Studies