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Table 1 Cohort characteristics

From: Obesity & hypertension are determinants of poor hemodynamic control during total joint arthroplasty: a retrospective review

Variable Statistic
Age group  
 <55 29 (24.8%)
 55-65 44 (37.6%)
 >65 44 (37.6%)
Sex  
 Male 23 (19.5%)
 Female 95 (80.5%)
BMI group  
 < 25 27 (25.7%)
 25-30 40 (38.1%)
 ≥ 30 38 (36.2%)
Preop diastolic BP (mean (sd)) 88.9 (11.3)
Preop systolic BP (mean (sd)) 149.1 (22.1)
Preop mean arterial pressure (MAP) (mean (sd)) 109.0 (13.4)
History of Hypertension  
 No 42 (35.6%)
 Yes 76 (64.4%)
Pre-operative Hypertension  
 No 41 (35.0%)
 Yes 76 (65.0%)
Hypertension group*  
 None 20 (17.1%)
 Controlled 21 (17.9%)
 Uncontrolled 76 (65.0%)
Number of anti-Hypertensive meds (of those with a history of hypertension)  
 0 6 (7.9%)
 1 31 (40.8%)
 2 23 (30.2%)
 >2 16 (21.1%)
Hypertensive urgency**  
 No 108 (92.3%)
 Yes 9 (7.7%)
Diabetes  
 No 100 (84.7%)
 Yes 18 (15.3%)
ASA  
 1 4 (3.4%)
 2 86 (72.9%)
 3 28 (23.7%)
Indication for Surgery***:  
 Osteoarthritis 99 (83.9%)
Rheumatoid Arthritis 18 (15.3%)
 Avascular Necrosis 3 (2.5%)
 Congenital Deformity 2 (1.7%)
Other 5 (4.2%)
Procedure  
 Unilateral TKR 52 (44.1%)
 Unilateral THR 22 (18.6%)
 Bilateral TKR 34 (28.8%)
 Bilateral THR 9 (7.6%)
 THR/TKR 1 (0.8%)
Anesthesia Type: Epidural  
 No 107 (90.7%)
 Yes 11 (9.3%)
Anesthesia Type: General  
 No 115 (97.5%)
 Yes 3 (2.5%)
Anesthesia Type: Spinal  
 No 13 (11.0%)
 Yes 105 (89.0%)
Duration of surgery group  
 3 hours or less 98 (84.5%)
 >3 hours 18 (15.5%)
  1. * We combined the data on history of hypertension and preoperative hypertension to create a three-level hypertension measure. Patients without a history of hypertension and without preoperative hypertension were classified as none. Patients with a history of hypertension and whose preoperative blood pressure was normal were classified as controlled. The remaining patients with hypertension preoperatively were classified as uncontrolled hypertension. Thus some patients in the uncontrolled group had history of hypertension and some did not.
  2. **SBP >180 or DBP >120.
  3. ***The sum of indications exceeds 100% because patients could have had more than one indication for surgery.