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Drug Use Evaluation (DUE) of Ceftriaxone in Mubende Regional Referral Hospital, Uganda: A Cross-Sectional Survey

Article Information

Leonard Manirakiza1*, Victoria Nambasa1, Stella Nanyonga2, Allan Serwanga1, Matovu Alphonsus3, Nankola Denis3, Helen Ndagije1

1National Pharmacovigilance Center, National Drug Authority, Uganda

2Department of clinical epidemiology, Makerere University, Kampala, Uganda

3Mubende Regional Referral Hospital, Uganda

*Corresponding Author: Manirakiza Leonard, National Pharmacovigilance Center, National Drug Authority, Uganda

Received: 11 September 2019; Accepted: 27 September 2019; Published: 30 September 2019

Citation: Leonard Manirakiza, Victoria Nambasa, Stella Nanyonga, Allan Serwanga, Matovu Alphonsus, Nankola Denis, Helen Ndagije. Drug Use Evaluation (DUE) of Ceftriaxone in Mubende Regional Referral Hospital, Uganda: A Cross-Sectional Survey. J Pharm Pharmacol Res 3 (2019): 105-115.

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Abstract

Introduction: Ceftriaxone is a third generation cephalosporin recommended as first line treatment option for a number of diseases in Uganda. However, the National Drug Authority has in the recent past received complaints of suspected treatment failure from clinicians who use different brands of ceftriaxone in Uganda. The main aim of the study was to document the treatment outcome following use of ceftriaxone and evaluating the use of ceftriaxone against the current treatment guidelines in Uganda.

Methods: A descriptive observational, non-intervention study design to document treatment outcomes after administration of Ceftriaxone injection in hospitalized patients was undertaken in Mubende. A total of 100 hospitalized patients treated with ceftriaxone were enrolled.

Results: Overall, Ceftriaxone was used to treat pneumonia in the paediatric ward, presumptive therapy for infection following caesarean section (n=47) and PID in the post-natal ward, while on surgical and medical wards, Ceftriaxone was used to manage upper respiratory infection, bacterial infections and meningitis. There were no Adverse Events reported to have occurred during treatment with ceftriaxone. Of the patients treated with ceftriaxone 18% completed their doses and had regular administration. Majority 60% of the patients had irregular administration with completed doses and 22% did not complete their doses.

Conclusion: There is low treatment outcome during use of Ceftriaxone and the empirically treatment is highly prevalent in the hospital. There is high number of inappropriate drug administration, in which patients usually miss doses or do not complete as prescribed. This practice has an effect of affecting the patient outcomes and aggravating antimicrobial resistance. Ch

Keywords

Ceftriaxone, Drug use, Evaluation, Antibiotics

Ceftriaxone articles, Drug use articles, Evaluation articles, Antibiotics articles

Article Details

1. Introduction

Ceftriaxone is recommended as first line treatment option in Uganda and is commonly used to treat different types of bacterial infections [1]. It is one of the widely used antibiotic in many health facilities in Uganda, however, some reports of its irrational use have been reported [2]. Irrational use of antibiotics creates a threat of decreased susceptibility and the emergence of multi-drug resistant pathogens, treatment failure, unwanted adverse effects, and increased costs to the health care system [3, 4]. The study conducted in Uganda revealed worsening trends of resistance and diminishing effectiveness of antibiotics in Uganda [5].

Studies have revealed worsening trends of resistance and diminishing effectiveness of antibiotics in Uganda and the associated factors classified as healthcare provider factors, patient factors or drug related factors. Healthcare provider related factors include lack of information, excessive and unnecessary antibiotic prescribing, incorrect dosage or route of administration and antibiotic prescribing for non-bacterial infections. Patient related factors include failure to complete doses and self-medication whereas drug related factors include ineffective drugs [6-8]. In Uganda, it has been reported that clinician practices that increase the threat of irrational use of antibiotics included selling of antibiotics over-the-counter without a prescription which was associated with under-dosing and prescription of antibiotics to patients with no clinical indications for antibiotic therapy [9, 10]. Due to the above factors, NDA conducted a DUE to establish the effectiveness of Ceftriaxone and to identify any irrational use, which could be affecting the realisation of the expected treatment outcomes when using Ceftriaxone in Mubende Regional Referral Hospital.

2. Materials and Methods

2.1 Study design

This was a descriptive observational and non-intervention study designed to document treatment outcomes after administration of Ceftriaxone injection in hospitalized patients managed with ceftriaxone in Mubende Regional Referral Hospital.

2.2 Setting

Following signed informed consent, all patients who were treated with ceftriaxone were enrolled. The data collection tool was pre tested at Mubende hospital (see Additional file #1).Two data collection assistants were trained intently for one week on data collection prior to the data collection process by a member of the NPC. All activities were conducted through the Medicines and Therapeutics Committees (MTC) of Mubende hospital. The MTC was brought on board because it is the mandate of the MTC to conduct DUE in the hospital.

2.3 Participants

Data was collected from 100 hospitalized patients admitted on the medical ward and treated with ceftriaxone during the study period of 45 days. All adult patients above 18 years admitted to the medical ward during the study period with ability and willingness to participate by giving signed informed consent were considered eligible for this study.

2.4 Variables

Data on administered medicine (s) including the medicine brand, diluent used, indication, dose prescribed, and dose administered, duration of treatment, concomitant medications, treatment outcome as well as data on laboratory investigation obtained was collected. Where routine practice permitted, data on culture and sensitivity was collected.

2.5 Data sources

The medication records of all the patients in different wards of the hospital who received ceftriaxone.

2.6 Statistical methods

Statistical analysis was performed using Microsoft Excel. A detailed statistical analysis plan was generated within three months of study start. This plan was revised during the course of the study in order to take into account protocol amendments, and to address potential issues occurring during the study, that could affect data analysis. Data was summarized using frequencies and percentages.

3. Results

3.1 Description of study respondents

Majority of the patients involved in the study were females (n=76, 76%), with average weight of 53.2 kilograms and majority falling in the age bracket of below 40 years. Majority of patients enrolled were from post-natal unit (47%, n=47), followed by paediatric (20%, n=20), medical ward (17%, n=17) and surgical ward 16%, n=16) (Table 1).

3.2 Common indicators

The most common indications of Ceftriaxone were infections and infestations (57%) and respiratory, thoracic and mediastinal disorders (20%) (Table 2).

3.3 Drug characteristics and treatment outcome

Sterile water was the most used diluent (74%) to reconstitute ceftriaxone followed by normal saline 20 mls 5% and normal saline 10 mls 8%. Overall, half of the patients (53%, n=100) prescribed ceftriaxone responded to treatment and were discharged with having recovered from the diagnosed illness, whereas (35%) of patients required change of medication. Other outcomes included referral (4%), run away (4%), unknown outcome (3%) and one patient (1%) died (Table 3).

3.4 Occurrence of adverse events (AEs)

There were no Adverse Events reported to have occurred during treatment with ceftriaxone.

3.5 Dose adherence and completion

Of the patients treated with ceftriaxone 18% completed their doses and had regular administration. Majority 60% of the patients had irregular administration with completed doses and 22% did not complete their doses (Table 4).

3.6 Culture and sensitivity test

Culture and sensitivity test was not done in most of the patients (93%). Of the 7 (7%) cases from paediatric ward in which test was done, growth and resistance of organisms was not determined and therefore not reported.

3.7 Dosing and duration of ceftriaxone use

In 74 (74%) cases, ceftriaxone was dosed as 2 g/day. The result of this study revealed that among all the patients the prescribed frequency for ceftriaxone was OD (100%) that is once a day.The mean duration of ceftriaxone use was 3.9 days (ranging 1 day to 8 days), with the majority (88%) taking 2-7 days on Ceftriaxone treatment. The average duration of stay in the hospital was 7.1 days (ranging from 1 day to 27 days), with most of the patients (70%) staying for 1-7 days (Table 5).

3.8 Comorbidity condition of patients

Out of total 100 patients enrolled in the study 89 (89%) patients did not have any co-morbid condition whereas 6 (6%) had co-morbid condition. The most common co-morbidity were Sickle cell disease, Diabetes mellitus, hypertension, Asthma and Epilepsy (Table 6).

3.9 Adherence to Uganda clinical guidelines (UCG)

More than four-fifth of Ceftriaxone use (n=81, 81%) were reported to be inappropriately administered (Figure 1).

3.10 Reasons for inappropriateness

Majority of unjustified Ceftriaxone administration arose from irregular administration (63%) and missing dose (16%) (Figure 2).

3.11 Factors associated with inappropriate administration of ceftriaxone

Using bivariate logistic regression, factors that were associated with inappropriate use of ceftriaxone in the study population included patient age, days of hospital stay and weight of the patient. Having other variables controlled, days of hospital stay (aOR=5.7, 95% CI: 1.3-24.6, P=0.02) and weight of the patient (aOR=36.8, 95% CI: 3.7-366.7, P=0.002) remained to be significant in the multivariate logistic model (Table 7).

Variables

Frequency (%)

Demographic characteristics

Sex

Female

76 (76%)

male

24 (24%)

Age category

0-20 years

42 (42%)

21-40 years

43 (43%)

Over 40 years

15 (15%)

Weight

Average (±SEM)

53.2 (± 2.4)

Patient ward

Medical

17 (17%)

Paediatric

20 (20%)

Post-natal

47 (47%)

Surgical

16 (16%)

Table 1: Social and demographic characteristics of respondents.

Indication

Frequency (N=100)

Infections and infestations

57

Respiratory, thoracic and mediastinal disorders

20

Reproductive system and breast disorders

9

Nervous system disorders

3

Gastrointestinal disorders

2

Injury, poisoning and procedural complications

2

Neoplasms benign, malignant and unspecified (incl cysts and polyps)

2

Blood and lymphatic system disorders

1

Metabolism and nutrition disorders

1

Musculoskeletal and connective tissue disorders

1

Vascular disorders

1

No indication

1

Table 2: Indications for Ceftriaxone use.

Variable

Frequency (%)

Dilution used

Sterile water 20%

72 (72%)

Sterile water 10%

15 (15%)

Normal saline 10%

8 (8%)

Normal saline 20%

5 (5%)

Treatment outcome

Discharged on recovery

53 (53%)

Changed medication

35 (35%)

Run away

4 (4%)

Referred

4 (4%)

Unknown

3 (3%)

Died

1 (1%)

Table 3: Drug characteristics and treatment outcome.

Dose completion status and action taken

Frequency of patients

Dose completed and administered irregularly

60

Discharged

56

Referred

1

Run away

1

Still on medication

1

Transferred

1

Dose completed and administered regularly

18

Discharged

17

Run away

1

Dose incomplete

22

Discharged

16

Referred

2

Died

1

Run away

2

Still on medication

1

Table 4: Dose adherence and completion.

Variable

Frequency (%)

Dose

<1 gm

11 (11%)

1 gm

14 (14%)

2 gm

74 (74%)

>2 gm

1 (1%)

Daily dose

Once daily

100 (100%)

Duration (days) on Ceftriaxone

1

7 (7%)

2-7

88 (88%)

8-14

5 (5%)

Average (Min-Max)

3.9 (1-8)

Duration of stay in hospital

1-7 days

70 (70%)

8-14 days

24 (24%)

Over 14 days

6 (6%)

Average (Min-Max)

7.1 (2-27)

Table 5: Dosing and duration of Ceftriaxone use.

Variable

Frequency (%)

Comorbidity presence

Yes

6 (6%)

No

89 (89%)

Unknown

5 (5%)

Comorbidities identified

Sickle cell disease

2 (2%)

Asthma

1 (1%)

Diabetes Mellitus

1 (1%)

Diabetes Mellitus and Hypertension

1 (1%)

Epilepsy

1 (1%)

Table 6: Comorbidity conditions of patients.

Variables

Appropriateness

Crude analysis

Adjusted analysis

Yes

No

cOR

CI of OR

P-Value

aOR

CI of OR

P-Value

Age (Years)

0-20

11 (11%)

31 (31%)

1.0

-

-

1.0

-

-

21-40

4 (4%)

39 (39%)

3.5

1.0-11.9

0.049

0.35

0.03-4.3

0.42

Over 40

4 (4%)

11 (11%)

0.98

0.26-3.71

0.97

0.15

0.01-1.8

0.13

Bed days

1-4

14 (14%)

20 (20%)

1.0

-

-

1.0

-

-

Over 4

4 (4%)

58 (58%)

10.2

2.99-34.4

0.0001

5.7

1.3-24.6

0.02

Weight (Kgs)

<50

14 (14%)

12 (12%)

1.0

-

-

1.0

>=50

4 (4%)

65 (65%)

18.9

5.3-67.5

0.0001

36.8

3.7-366.7

0.002

Sex

Female

7 (7%)

17 (17%)

1.0

-

-

-

-

-

Male

12 (12%)

64 (64%)

2.2

0.75-6.43

0.15

-

-

-

Ward

Pediatric

10 (10%)

10 (10%)

1.0

-

-

-

-

-

Medical

4 (4%)

13 (13%)

3.3

0.78-13.48

0.104

-

-

-

Surgical

4 (4%)

12 (12%)

3.0

0.72-12.55

0.132

-

-

-

Post natal

1 (1%)

46 (46%)

6.0

2.27-14.4

0.142

-

-

-

Table 7: Factors associated with inappropriate use of Ceftriaxone.

fortune-biomass-feedstock

Figure 1: Appropriateness in administration of Ceftriaxone.

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Figure 2: Criteria referenced inappropriate use of Ceftriaxone.

4. Discussion

Ceftriaxone is considered to have superior activity against Enterobacteriaceae but its activity is challenged by several factors, including resistance and inappropriate use [11]. The current study, therefore sought to determine therapeutic outcomes of ceftriaxone among the 100 randomly selected patients admitted at Mubende RRH. In this study, 53% of the patients successfully responded to Ceftriaxone treatment. Out of total 100 patients enrolled in the study, 89 (89%) patients did not have any co-morbid condition, whereas 6 (6%) had co-morbid condition. The most common co-morbidity were Sickle cell disease, Asthma, Diabetes mellitus, hypertension and Epilepsy. The finding of this study was similar other studies [12]. The results of this study showed that 93% of the patients were treated without culture and sensitivity testing. This finding was consistent with the findings of the related study [13, 14]. Mubende RRH had only 7% patients who conducted culture and sensitivity tests. These cultures are supported under a program for Acute Febrile Illnesses for paediatric patients study. The rate of performing culture and drug sensitivity test was very low compared to other related studies [15-18]. The difference may be due to the difference in sample sizes and high cost of culture and drug sensitivity which few patients could afford.

The duration of therapy was found to be high in the range of 2-7 days (88%). The mean duration of use was found to be 3.9 days. This is the appropriate duration of ceftriaxone use. The finding of this study is similar to the retrospective cross sectional study conducted in Ethiopia [19]. The mean duration of ceftriaxone therapy used was found to be 3.9 days in this study, which is less than what was reported by a similar study [20, 21]. This is an important factor because the number of days in which an antibiotic is used is associated with its resistance prevalence [20]. Overall, the prescription of ceftriaxone was given as per the current treatment guidelines. All patients received a once daily dosing of ceftriaxone, which is the recommended dosing by WHO as reported by a similar study [19]. The daily prescribed dose was found to be 2gm per day (74%) in most patients in the study, which is the correct daily prescribed dose for ceftriaxone as given by WHO and this was consistent with results of similar studies [20, 21].

The average number of hospital stay for patients was 7.1 days. This is higher than the average 6 days reported by a study in a private hospital in India [22]. Furthermore, our finding shows 24% of the patients stayed longer than 8-14 days. Logistic regression showed that patients who stayed longer than 4 days were 6 times more associated with inappropriate administration of Ceftriaxone (aOR=5.7, 95% CI: 1.3-24.6, P=0.02). Another study reported that staying longer than 10 days is 3 times more likely to result in antibiotic use problems than when staying less than 10 days [23]. Prolonged hospital stay is also associated with higher treatment costs, the emergence of resistant microorganisms and increased risk of ADR and drug-drug interaction [24-26]. We found that 6% of the patients stayed longer than 14 days, which could result in increased risk of antibiotic use problems. This study had some limitations. The sample size was small and the difference between the observed results in relation to other studies is relatively high. Also, poor record keeping in the patient medical records could not enable the evaluation for adverse drug Events during the use of Ceftriaxone.

5. Conclusion

The study revealed low treatment outcome during use of Ceftriaxone. There is high number of inappropriate drug administration, in which patients usually miss doses or do not complete as prescribed. This practice increases a threat of antimicrobial resistance. Choice of ceftriaxone use is not guided by culture and sensitivity. A more structured drug utilization study is recommended to acquire more concrete clinical practices on ceftriaxone use.

Declarations

Ethics approval and consent to participate

Approval was obtained from Mubende Hospital Research and Ethics Committee and from the Mildmay Uganda Research Ethics Committee.

Consent for publication

Not applicable

Availability of data and material

The datasets generated and analysed are available.

Author’s Contribution

VN generated the idea, designed protocol and supervised the study. MA and ND conducted data collection. ML analyzed and interpreted the results and prepared the draft manuscript. AS involved in the supervision of the study. HN involved in manuscript preparations and editorial proof reading. All authors have complete access to study data that support the publication. All authors read and approved the final manuscript.

Competing Interests

Victoria Nambasa, Matovu Alphonsus, Nankola Denis, Leonard Manirakiza, Helen Ndagije, and Allan Serwanga have no conflicts of interest that are directly relevant to the content of this study.

Acknowledgements

The authors acknowledge the study participants, data collectors and the staffs of Mubende Regional Referral Hospital for the support rendered during data collection and manuscript compilation.

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