evaluation report of the pneumatic tube transport system ... · same building. the other pneumatic...

2015

Dr.AnwarAlAnjeriSeniorRegistrarClinicalBiochemistryLaboratoryMubarakHospital

EvaluationReportofthePneumaticTubeTransportSystem(PEVCO)connectingDialysisHospitalto

MubarakHospital

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Introduction:

Delivering prompt, customized care is critical to improving the patient experience and ultimately enabling better patient outcomes. Pneumatic tube systems help hospitals meet patient needs by efficiently transporting drugs, documents and specimens to and from nurses’ stations, labs, inpatient and outpatient pharmacies, blood banks and the ED.

The dialysis Hospital has two main pneumatic tube systems. One system is intended to transport patients’ samples from the dialysis wards to the Clinical Biochemistry Laboratory in the same building. The other pneumatic tube system is used to transport samples from dialysis hospital to Clinical Biochemistry Laboratory in Mubarak Hospital.

Comparison Study:

The pneumatic tube system linking the Dialysis hospital to Mubarak Hospital was evaluated by analyzing 41 patient samples. Each sample was divided into two aliquots; one aliquot was sent from the Phlebotomy room in Mubarak Hospital to the Clinical Biochemistry Laboratory in Dialysis Hospital by the pneumatic tube system, the other aliquot was sent by porter. Both aliquots were analyzed using the same Beckman UniCel DxC 600 Synchron® Clinical System. Comparison results were subjected to linear regression analysis using Microsoft Excel 2010 and Bland-Altman difference plots using the MedCal software (www.medcal.be).

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Albumin

Alkaline Phosphatase

y = 0.9825x + 0.556R² = 0.982415

25

35

45

55

15 25 35 45 55

Pneu

matic Tub

e

Porter

Linear Regression Graph of AlbuminBland-Altman Plot

15 20 25 30 35 40 45 50-3

-2

-1

0

1

2

Mean Albumin

Difference

(Pneumatic Tube - Porter)

Mean-0.1

-1.96 SD-1.6

+1.96 SD1.5

y = 1.0189x -‐ 0.6055R² = 0.99780

50100150200250300

0 100 200 300

Pneu

matic Tub

e

Porter

Linear Regression Graph of ALPBland-Altman Plot

0 50 100 150 200 250 300-6-4-20246810

Mean ALP

Difference

(NPneumatic Tube - Porter)

Mean0.9

-1.96 SD-3.6

+1.96 SD5.3

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Alanine Aminotransferase

Aspartate Aminotransferase

y = 1.0238x + 0.0311R² = 0.99560

20

40

60

80

0 20 40 60 80

Pneu

matic Tub

e

Porter

Linear Regression Graph of ALTBland-Altman Plot

0 20 40 60 80-1.5-1.0-0.50.00.51.01.52.02.53.03.5

Mean ALT

Difference


Mean0.47

-1.96 SD-1.12

+1.96 SD2.06

y = 1.0053x + 0.5178R² = 0.9936

0

20

40

60

80

0 20 40 60 80

Pneu

matic Tub

e

Porter

Linear Regression Graph of AST Bland-Altman Plot

0 10 20 30 40 50 60 70 80-2

-1

0

1

2

3

4

Mean AST

Difference


Mean0.6

-1.96 SD-1.1

+1.96 SD2.4

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Calcium

Carbon Dioxide

y = 0.9861x + 0.042R² = 0.9636

1.82

2.22.42.62.8

1.8 2 2.2 2.4 2.6 2.8

Pneu

matic Tub

e

Porter

Linear Regression Graph of Calcium Bland-Altman Plot

1.8 2.0 2.2 2.4 2.6 2.8-0.1

0.0

0.1

Mean Calcium

Difference


Mean0.01

-1.96 SD-0.05

+1.96 SD0.06

y = 0.8681x + 2.7806R² = 0.9141

10

20

30

40

10 20 30 40

Pneu

matic Tub

e

Porter

Linear Regression Graph of Carbon Dioxide

Bland-Altman Plot

15 20 25 30 35 40-4

-3

-2

-1

0

1

2

3

Mean Carbon Dioxide

Difference


Mean-0.4

-1.96 SD-2.9

+1.96 SD2.2

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Chloride

Cholesterol

y = 0.9351x + 6.5689R² = 0.920390

95100105110115120

90 95 100 105 110 115

Pneu

matic Tub

e

Porter

Linear Regression Graph of ChlorideBland-Altman Plot

90 95 100 105 110 115 120-3

-2

-1

0

1

2

3

Mean Chloride

Difference


Mean-0.2

-1.96 SD-2.2

+1.96 SD1.9

y = 0.9966x -‐ 0.0509R² = 0.9946

2

4

6

8

2 4 6 8

Pneu

matic Tub

e

Porter

Linear Regression Graph of Total Cholesterol

Bland-Altman Difference Plot

2 3 4 5 6 7 8 9-0.3

-0.2

-0.1

0.0

0.1

0.2

0.3

Mean TC

Difference

Pneumatic tube - porter

Mean-0.07

-1.96 SD-0.27

+1.96 SD0.14

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Creatinine

Direct Bilirubin

y = 1.0021x + 0.5522R² = 0.9998

0

500

1000

1500

0 500 1000 1500

Pneu

matic Tub

e

Porter

Linear Regression Graph of Creatinine

Bland-Altman Plot

0 200 400 600 800 1000 1200 1400-10

-5

0

5

10

15

Mean Creatinine

Difference


Mean0.9

-1.96 SD-5.1

+1.96 SD6.8

y = 0.9991x + 0.0371R² = 0.9989

0

5

10

15

0 5 10 15

Pneu

matic Tub

e

Porter

Linear Regression Graph of DBilBland-Altman Plot

0 2 4 6 8 10 12-0.2

-0.1

0.0

0.1

0.2

Mean Direct Bilirubin

Difference


Mean0.04

-1.96 SD-0.11

+1.96 SD0.18

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Gamma Glutamyl Transferase

Glucose

y = 1.0056x + 0.0061R² = 0.9999

0

50

100

150

200

0 50 100 150 200

Pneu

matic Tub

e

Porter

Linear Regression Graph of GGTBland-Altman plot

0 20 40 60 80-1.5-1.0-0.50.00.51.01.52.02.53.03.5

Mean GGT

Difference


Mean0.47

-1.96 SD-1.12

+1.96 SD2.06

y = 1.002x + 0.0563R² = 0.99740

5

10

15

20

0 5 10 15 20

Pneu

matic Tub

e

Porter

Linear Regression Graph of GlucoseBland-Altman Plot

2 4 6 8 10 12 14 16 18-0.3-0.2-0.10.00.10.20.30.40.5

Mean Glucose

Difference


Mean0.07

-1.96 SD-0.18

+1.96 SD0.32

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Phosphorus

Potassium

y = 0.95x + 0.0344R² = 0.98750

1

2

3

0 0.5 1 1.5 2 2.5

Pneu

matic

Porter

Linear Regression Graph of Phosphorus

Bland-Altman Plot

0.0 0.5 1.0 1.5 2.0 2.5-0.2

-0.1

0.0

0.1

Mean Phosphorus

Difference


Mean-0.02

-1.96 SD-0.11

+1.96 SD0.07

y = 0.9807x + 0.0742R² = 0.98793

4567

3 4 5 6 7

Pneu

matic Tub

e

Porter

Linear Regression Graph of Potassium

Bland-Altman Plot

3 4 5 6 7 8-0.3

-0.2

-0.1

0.0

0.1

0.2

Mean Potassium

Difference


Mean-0.01

-1.96 SD-0.15

+1.96 SD0.13

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Sodium

Total Bilirubin

y = 0.8388x + 22.863R² = 0.7758

134136138140142144146

130 135 140 145 150

Pneu

matic Tub

e

Porter

Linear Regression Graph of SodiumBland-Altman Plot

134 136 138 140 142 144 146 148-4-3-2-101234

Mean Sodium

Difference


Mean0.2

-1.96 SD-2.2

+1.96 SD2.7

y = 0.9925x -‐ 0.1157R² = 0.98670

1020304050

0 10 20 30 40 50

Pneu

matic Tub

e

Porter

Linear Regression Graph of TBilBland-Altman Plot

0 10 20 30 40 50-2.5-2.0-1.5-1.0-0.50.00.51.01.52.0

Mean Total Bilirubin

Difference


Mean-0.20

-1.96 SD-1.88

+1.96 SD1.49

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Total Protein

Triglyceride

y = 0.9875x + 1.0724R² = 0.978240

60

80

100

40 50 60 70 80

Pneu

matic Tub

e

Porter

Linear Regression Graph of Total Protein

Bland-Altman Plot

40 50 60 70 80 90-3

-2

-1

0

1

2

3

Mean Total Protein

Difference


Mean0.2

-1.96 SD-1.8

+1.96 SD2.2

y = 1.0014x -‐ 0.0225R² = 0.9976

01234

0 1 2 3 4

Pneu

matic Tub

e

Porter

Linear Regression Graph of Triglyceride

Bland-Altman Dofference Plot

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0-0.1

0.0

0.1

Mean TG

Difference

Pneumatic tube - Porter

Mean-0.02

-1.96 SD-0.09

+1.96 SD0.05

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Urea

Uric Acid

y = 1.0057x + 0.0953R² = 0.9983

0

10

20

30

40

0 10 20 30 40

Pneu

matic Tub

e

Porter

Linear Regression Graph of UreaBland-Altman Plot

0 5 10 15 20 25 30 35 40-1.0

-0.5

0.0

0.5

1.0

1.5

Mean Urea

Difference


Mean0.14

-1.96 SD-0.48

+1.96 SD0.76

y = 1.056x -‐ 11.852R² = 0.99390

100200300400500600

0 200 400 600

Pneu

matic Tub

e

Porter

Linear Regression Graph of Uric AcidBland-Altman Plot

100 200 300 400 500 600-20

-10

0

10

20

30

Mean Uric Acid

Difference

(pneumatic tube - porter)

Mean6.8

-1.96 SD-13.4

+1.96 SD27.0

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Conclusion

Comparison of pneumatic tube transport system with porter transport indicated good analytical agreement across the studied clinical biochemistry tests. The Bland-Atman difference plots showed no significant bias between the two methods. Therefore, the Pneumatic Tube Transport System connecting the Dialysis Hospital to Mubarak Hospital is fit for use in the transport of patients’ samples between the two Hospitals.

Dr. Anwaar AlAnjeri Professor Segun Mojiminiyi

Senior Registrar Consultant and Head of Unit Clinical Biochemistry Laboratory Clinical Biochemistry Laboratory Mubarak Hospital Mubarak Hospital

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Acknowledgement

We wish to thank Mrs. Najah Rezqalaah for her major contribution into sample collection and analysis. We are also grateful to Mr. Anwar AlAwadi for his great help in data entry.

evaluation report of the pneumatic tube transport system ... · same building. the other pneumatic...

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