Table 2.
BMI category | <30 (n = 210) | 30–34.99 (n = 127) | ≥35 (n = 81) | p value* |
---|---|---|---|---|
Mean age in years (SD) | 61.4 (8.6) | 61.4 (6.8) | 61.6 (7.6) | 0.98 |
(95% CI) | (44.5–78.3) | (48.0–74.8) | (46.7–76.5) | |
Male (%) | 91.4 | 92.4 | 88.9 | 0.60 |
(95% CI) | (87.2–94.6) | (84.9–96.9) | (80.0–94.8) | |
Mean ASA class (SD) | 2.0 (0.2) | 2.0 (0.1) | 2.1 (0.4) | 0.01 |
(95% CI) | (1.6–2.4) | (1.8–2.2) | (1.4–2.8) | |
CHFa(%) | 4.8 | 1.6 | 6.2 | 0.20 |
(95% CI) | (2.3–8.6) | (0.2–5.6) | (2.0–13.8) | 0.55 |
CADb(%) | 13.8 | 17.3 | 12.3 | 0.54 |
(95% CI) | (9.4–19.2) | (11.1–25.0) | (6.1–21.5) | |
COPD or asthmac(%) | 12.4 | 8.7 | 12.3 | |
(95% CI) | (8.2–17.6) | (4.4–15.0) | (6.1–21.5) | |
Presence of OSA (%) | 15.2 | 30.7 | 51.9 | <0.01 |
(95% CI) | (10.7–20.8) | (22.8–39.5) | (40.5–63.1) | <0.01 |
Use of CPAP/BiPAP (%) | 7.6 | 20.5 | 34.6 | |
(95% CI) | (4.4–12.1) | (13.8–28.5) | (24.3–46.0) | |
Mean Charlson Comorbidity Index (SD) | 2.7 (1.6) | 2.5 (1.5) | 2.6 (1.4) | 0.45 |
(95% CI) | (0.0–5.8) | (0.0–5.4) | (0.0–5.5) | |
Use of MAC for sedation (%) | 7.1 | 5.5 | 17.3 | <0.01 |
(95% CI) | (4.1–11.5) | (2.2–11.0) | (9.8–27.3) | |
Mean procedure time, minutes (SD)d | 34.4 (17.2) | 33.5 (16.5) | 37.0 (23.2) | 0.40 |
(Range) | (5.0–85.0) | (6.0–94.0) | (13.0–122.0) | |
CAEs by BMI category | ||||
Overall frequency of CAEs (%) | 43.8 | 48.0 | 50.6 | 0.53 |
(95% CI) | (37.0–50.8) | (39.1–57.1) | (39.3–61.9) | |
Systolic BP < 90 | 3.7 | 4.7 | 1.2 | |
Systolic BP >200 | 0.0 | 0.0 | 1.2 | |
Heart rate <55 | 8.6 | 11.0 | 8.6 | |
Heart rate >120 | 0.0 | 0.0 | 0.0 | |
Hypoxia <90% | 34.8 | 40.9 | 43.2 | |
(95% CI) | (28.3–41.6) | (32.3–50.0) | (32.2–54.7) | 0.32 |
Overall frequency of interventione | ||||
At least one intervention | 36.1 | 40.9 | 44.4 | 0.39 |
(95% CI) | (29.7–43.1) | (32.3–50.0) | (33.4–55.9) | |
At least 2 interventions | 2.4 | 3.9 | 3.7 | |
At least 3 interventions | 0.4 | 1.6 | 1.2 | |
Intervention type | ||||
Increase IV fluids | 2.9 | 2.4 | 1.2 | |
>2L NC oxygen | 34.3 | 40.2 | 43.2 | |
(95% CI) | (27.9–41.1) | (31.6–49.2) | (32.2–54.7) | |
Facemask | 0.4 | 0.0 | 0.0 | |
Nasopharyngeal airway | 1.0 | 3.1 | 3.7 | |
(95% CI) | (0.1–3.4) | (0.9–7.9) | (3.7–10.4) |
CHF = congestive heart failure
CAD = coronary artery disease
COPD or Asthma = COPD or asthma
Total procedure time = time from scope insertion to removal of scope from patient at end of procedure
Number of interventions required in one procedure
p value from unadjusted ANOVA testing