| Literature DB >> 23135540 |
Avril Janette Basey1, Janet Krska, Tom D Kennedy, Adam John Mackridge.
Abstract
BACKGROUND: Implementing venous thromboembolism (VTE) risk assessment guidance on admission to hospital has proved difficult worldwide. In 2010, VTE risk assessment in English hospitals was linked to financial sanctions. This study investigated possible barriers and facilitators for VTE risk assessment in medical patients and evaluated the impact of local and national initiatives.Entities:
Year: 2012 PMID: 23135540 PMCID: PMC3533008 DOI: 10.1136/bmjopen-2012-001668
Source DB: PubMed Journal: BMJ Open ISSN: 2044-6055 Impact factor: 2.692
Figure 1Overall study design, illustrating local and national initiatives relating to venous thromboembolism prophylaxis.
Demographic details of patients included in case note reviews and observations
| Characteristic | Case note review | Observations |
|---|---|---|
| Number | 930 | 71 |
| Case notes available | 876 | 67 |
| Sex: male (%) | 381 (43.5%) | 28 (39%) |
| Age range (mean) | 16–98 (64) years | 16–98 (68) years |
| Average length of stay (mean) | 1–182 (9·9) days | 1–54 (8·7) days |
| Main causes of admission (descending order of occurrence) | Infection (285; 32.5%) | Infection (15; 22%) |
| Pain (72; 8.2%) | Pain (8; 12%) | |
| Cardiac cause (60; 6.8%) | Abnormal biochemistry* (8; 12%) | |
| Shortness of breath (54; 6.2%) | Possible VTE (7; 10%) | |
| Abnormal biochemistry* (51; 5.5%) | Shortness of breath (5; 7%) | |
| Possible VTE (46; 5.3%) | Vomiting or diarrhoea (5; 7%) |
*Results outside of the normal range for haemoglobin, glucose, thyroid hormones, sodium, potassium, magnesium or calcium.
Frequency of VTE risk factors and bleeding risks
| Study period | November 2009 (1) | January 2010 (2) | April 2010 (3) | April 2011 (4) | Totals |
|---|---|---|---|---|---|
| Total admitted | 265 | 255 | 239 | 256 | 1015 |
| Case notes available | 232/265 (87.5%) | 216/255 (84.7%) | 204/239 (85.4%) | 224/256 (87.5%) | 876/1015 (86.3%) |
| At least 1 VTE risk factor* | 192/232 (82.8%) | 172/216 (79.6%) | 161/204 (78.9%) | 195/224(87.1%) | 719/876 (82.1%) |
| 95% CI | (77.3% to 87.4%) | (73.6% to 84.8%) | (72.7% to 82.3%) | (82.9% to 91.1%) | (79.4 to 84.6%) |
| At least one bleeding risk factor* | 44/232 (19.0%) | 62/216 (28.7%) | 53/204 (26.0%) | 63/224 (28.1%) | 222/876 (25.3%) |
| 95% CI | (14.1% to 24.6%) | (22.8% to 35.2%) | (20.1% to 32.6%) | (22.3% to 34.5%) | (22.5% to 28.4%) |
| Risk factors for both VTE and bleeding* | 34/232 (14.7%) | 44/216 (20.4%) | 43/204 (21.1%) | 50/224 (22.3%) | 171/876 (19.5%) |
| 95% CI | (10.4% to 19.9%) | (15.2% to 26.4%) | (15.7% to 27.3%) | (17.0% to 28.3%) | (16.9% to 22.3%) |
| VTE risk and no bleeding risk* (LMWH indicated) | 158/232 (68.1%) | 128/216 (59.3%) | 118/204 (57.8%) | 145/224 (64.7%) | 549/876 (62.7%) |
| 95% CI | (61.7% to 74.1%) | (52.4% to 65.9%) | (50.7% to 64.7%) | (58.1% to 71.0%) | (59.4% to 65.9%) |
*No significant difference between study periods.
LMWH, low-molecular-weight heparin; VTE, venous thromboembolism.
Frequency of VTE risk assessment and appropriate prescribing of LMWH
| Study period | November 2009 (1) | January 2010 (2) | April 2010 (3) | April 2011 (4) | |
|---|---|---|---|---|---|
| Total admitted | All admissions | 265 | 255 | 239 | 256 |
| Case notes available | 232/265 (87.5%) | 216/255 (84.7%) | 204/239 (85.4%) | 224/256 (87.5%) | |
| VTE risk assessment completed* | 16/232 (6.9%) | 40/216 (18.5%) | 40/204 (19.6%) | 221/224 (98.7%) | |
| Prescription charts and case notes available | 205/265 (77.4%) | 201/255 (78.8%) | 189/239 (79.1%) | 209/256 (81.6%) | |
| LMWH indicated | 147/205 (71.7%) | 115/201 (57.2%) | 115/189 (60.8%) | 135/209 (64.6%) | |
| 95% CI | (65.0% to 77.8%) | (50.1% to 64.3%) | (53.5% to 67.8%) | (57.7% to 71.1%) | |
| LMWH prescribed appropriately* (patient has VTE risk factors and no bleeding risks) | 73/147 (49.7%) | 71/115 (61.7%) | 78/115 (67.8%) | 126/136 (92.6%) | |
| 95% CI | (41.3% to 58.0%) | (52.2% to 70.6%) | (58.5% to 76.2%) | 86.9% to 96.4%) | |
| LMWH contra indicated | 32/205 (15.6%) | 49/201 (24.4%) | 39/189 (20.6%) | 43/209 (20.6%) | |
| 95% CI | (10.9% to 21.3%) | (18.6 to 30.9%) | (15.1% to 27.1%) | (15.3% to 26.7%) | |
| LMWH prescribed inappropriately** | 1/32 (3%) | 9/49 (18%) | 3/39 (8%) | 14/43 (33%) | |
| 95% CI | (0% to 16%) | (9% to 32%) | (2% to 21%) | (19% to 49%) | |
| Number of admissions observed | Observations | 16 | 21 | 14 | 20 |
| VTE risk assessment completed | 0/16 (0%) | 7/21 (33%) | 4/14 (29%) | 15/20 (75%) | |
| 95% CI | (0% to 17%) | (15% to 60%) | (8% to 58%) | (51% to 91%) | |
| LMWH prescribed appropriately | 9/16 (56%) | 12/21 (57%) | 7/14 (50%) | 12/20 (60%) | |
| 95% CI | (30% to 80%) | (34% to 78%) | (23% to 77%) | (36% to 81%) | |
| LMWH prescribed inappropriately | 0/16 (0%) | 2/21 (10%) | 0/14 (0%) | 1/20 (5%) | |
| 95% CI | (0% to 17%) | (1% to 30%) | (0% to 19%) | (0% to 25%) |
Significant differences between study periods *p<0.001; **p=0.002.
LMWH, low-molecular-weight heparin; VTE, venous thromboembolism.