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. 2014 May 17;4(5):e005011. doi: 10.1136/bmjopen-2014-005011

Table 2.

The triggers we identified in our study are presented with PPV with 95% CI for identifying harm

Item PPV (CI)%
General care
 PG1 Early warning score
 PG2 Tissue damage or pressure ulcer
 PG3 Readmission within 30 days 24/175=14 (9 to 20)
 PG4 Unplanned admission
 PG5 Abnormal cranial imaging
 PG6 Respiratory or cardiac arrest/crash calls 0/1=0 (0 to 95)
 PG7 Diagnostic imaging for embolus/thrombus +/− confirmation 1/2=50 (3 to 97)
 PG8 Complication of procedure or treatment 17/23=74 (51 to 89)
 PG9 Transfer to higher level of care 3/22=14 (4 to 36)
 PG10 Hypoxia O2 saturation <85% 0/25=0 (0 to 17)
 PG11 Cancelled elective procedure/delayed discharge 1/1=100 (5 to 100)
Surgical care
 PS1 Return to theatre 1/1=100 (5 to 100)
 PS2 Change in planned procedure
 PS3 Surgical site infection or hospital acquired urinary tract infection 6/6=100 (52 to 100)
 PS4 Removal/injury/repair of organ
Intensive care
 IP1 Readmission to intensive care or high-dependency care
Medication
 PM1 Vitamin K (except for routine dose in neonates)
 PM2 Naloxone
 PM3 Flumazenil (romazicon)
 PM4 Glucagon or glucose ≥10%
 PM5 Chlorphenamine or antihistamine 0/1=0 (0 to 95)
 PM6 Antiemetics
 PM7 IV Bolus ≥10 mL/kg colloid or crystalloid given 3/19=16 (4 to 40)
 PM8 Abrupt medication stop
Lab test
 PL15 Thrombocytopenia (platelets <100) 0/7=0 (0 to 44)
 PL1 High INR >5 or a PTT >100
 PL2 Transfusion 2/8=25 (4 to 64)
 PL3 Abrupt drop in Hb or Hct (>25%) 2/8=25 (4 to 64)
Biochemistry
 PL4 Rising urea or creatinine (>2× baseline) 0/1=0 (0 to 95)
 PL5/PL6 Electrolyte abnormalities (Na+ <130 or >150, K+ <3.0 or >6.0) 0/12=0 (0 to 30)
 PL7 Hypoglycaemia (<3 mmol/L) 3/8=38 (10 to 74)
 PL8 Hyperglycaemia (>12 mmol/L) 0/1=0 (0 to 95)
 PL9 Drug level out of range
Microbiology
 PL10 MRSA bacteraemia
 PL11 Clostridium difficile
 PL12 VRE
 PL13 Nosocomial pneumonia 2/2=100 (20 to 100)
 PL14 Positive blood culture 1/1=100 (5 to 100)
Other
 PO1 Other event

The numerator represents number of harm events and the denominator how many times each individual trigger was found in all patient contacts (n=761).

Hb, haemoglobin; HCT, haematocrit; INR, international normalised ratio; MRSA, methicillin-resistant Staphylococcus aureus; PPV, positive predictive value; VRE, vanc resistant enterococcus.