Skip to main content

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.