Stellenbosch University - Scopus Tygerberg Hospital Publications

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Clinical trial: Intravenous pantoprazole vs. ranitidine for the prevention of peptic ulcer rebleeding: A multicentre, multinational, randomized trial
(2009) Van Rensburg C.; Barkun A.N.; Racz I.; Fedorak R.; Bornman P.C.; Beglinger C.; Balanzo J.; Deviere J.; Kupcinskas L.; Luehmann R.; Doerfler H.; Schafer-Preuss S.
Background: Controlled pantoprazole data in peptic ulcer bleeding are few. Aim: To compare intravenous (IV) pantoprazole with IV ranitidine for bleeding ulcers. Methods: After endoscopic haemostasis, 1256 patients were randomized to pantoprazole 80 mg+8 mg/h or ranitidine 50 mg+13mg/h, both for 72 h. Patients underwent second-look endoscopy on day 3 or earlier, if clinically indicated. The primary endpoint was an overall outcome ordinal score: no rebleeding, rebleeding without/with subsequent haemostasis, surgery and mortality. The latter three events were also assessed separately and together. Results: There were no between-group differences in overall outcome scores (pantoprazole vs. ranitidine: S0: 91.2 vs. 89.3%, S1: 1.5 vs. 2.5%, S2: 5.4 vs. 5.7%, S3: 1.7 vs. 2.1%, S4: 0.19 vs. 0.38%, P = 0.083), 72-h clinically detected rebleeding (2.9% [95% CI 1.7, 4.6] vs. 3.2% [95% CI 2.0, 4.9]), surgery (1.9% [95% CI 1.0, 3.4] vs. 2.1% [95% CI 1.1, 3.5]) or day-3 mortality (0.2% [95% CI 0, 0.09] vs. 0.3% [95% CI 0, 1.1]). Pantoprazole significantly decreased cumulative frequencies of events comprising the ordinal score in spurting lesions (13.9% [95% CI 6.6, 24.7] vs. 33.9% [95% CI 22.1, 47.4]; P = 0.01) and gastric ulcers (6.7% [95% CI 4, 10.4] vs. 14.3% [95% CI 10.3, 19.2], P = 0.006). Conclusions: Outcomes amongst pantoprazole and ranitidine-treated patients were similar; pantoprazole provided benefits in patients with arterial spurting and gastric ulcers. © 2009 Blackwell Publishing Ltd.
Comparable clinical efficacy and tolerability of 20 mg pantoprazole and 20 mg omeprazole in patients with grade I reflux oesophagitis
(2001) Bardhan K.D.; Van Rensburg C.
Background: Several clinical trials have shown that pantoprazole (40 mg) and omeprazole (40 or 20 mg) have similar efficacy and safety in the treatment of grade II-IV reflux oesophagitis (Savary-Miller classification). Aim: To compare the efficacy and safety of once-daily doses of pantoprazole (20 rog) and omeprazole (20 mg) with respect to symptom relief and healing of patients with grade I reflux oesophagitis. Methods: Patients with endoscopically established grade I reflux oesophagitis (non-confluent, patchy red lesions with/without white fibrin coating) were enrolled into this randomized, open, parallel-group, multicentre study. A total of 328 patients (n = 166 in the pantoprazole group, n = 162 in the omeprazole group) were recruited in 23 centres. Patients received 4 weeks of treatment. If the reflux oesophagitis was not completely healed, the treatment was extended to 8 weeks. Results: After 2 and 4 weeks of treatment with either pantoprazole or omeprazole, the rate of symptom relief was similar (70% vs. 79% and 77% vs, 84%, respectively). High healing rates were observed after 4 and 8 weeks (pantoprazole: 84% and 90%, respectively; omeprazole: 89% and 95%, respectively). Both treatments were well tolerated. The most frequently reported adverse events on pantoprazole and omeprazole, respectively, were nausea (8% vs. 7%), diarrhoea (5% vs. 6%) and headache (6% vs. 3%). Conclusions: After 4 and 8 weeks of treatment with pantoprazole (20 mg) or omeprazole (20 mg), patients with mild gastro-oesophageal reflux disease (grade I) showed comparably high rates of symptom relief and healing. Both treatments were safe and well tolerated.
Efficacy and safety of pantoprazole 20 mg once daily treatment in patients with ulcer-like functional dyspepsia
(2008) Van Rensburg C.; Berghofer P.; Enns R.; Dattani I.D.; Maritz J.F.; Carro P.G.; Fischer R.; Schwan T.
Objective: To investigate the efficacy of pantoprazole 20 mg once daily (o.d.) in relieving epigastric pain associated with ulcer-like functional dyspepsia. Research design and methods: In this double-blind, placebo-controlled, multicentre study, patients experiencing ulcer-like functional dyspepsia, with epigastric pain as the predominant symptom, were randomised to receive pantoprazole 20 mg or placebo o.d. for 28 days. Primary endpoint was the complete relief (i.e. absence) from epigastric pain after 28 days' treatment. The odds ratio (OR) for pantoprazole/placebo and its 95% confidence intervals (CIs) were determined. Significant superiority of pantoprazole was concluded if the value 1.0 was above this interval. Results: Of 419 patients (intention-to-treat [ITT]) randomised to treatment, 207 received pantoprazole and 212 received placebo. Epigastric pain relief was achieved after 28 days' treatment in 55% of pantoprazole recipients and 45% of placebo recipients (per-protocol [PP]: 58% and 47%, respectively). Pantoprazole demonstrated statistically significant superiority compared with placebo in the ITT (OR: 0.68; 95% CI: 0.46-0.99) and PP populations (OR: 0.64; 95% CI: 0.42-0.98). Pantoprazole was more efficacious than placebo in relieving heartburn and acid regurgitation after 7, 14 and 28 days of treatment. The sum score of gastrointestinal symptoms after 28 days was statistically significantly lower in the pantoprazole than placebo group. Fewer patients receiving concomitant psychotropic medication experienced relief from epigastric pain than those not receiving such medication. Adverse events did not significantly differ between pantoprazole and placebo. Conclusions: Results of this study suggest that pantoprazole 20 mg is more efficacious than placebo, and is a well-tolerated treatment for relieving epigastric pain in patients with ulcer-like functional dyspepsia. Further research is needed to confirm these findings. © 2008 Informa UK Ltd.
Efficacy and safety of pantoprazole versus ranitidine in the treatment of patients with symptomatic gastroesophageal reflux disease
(2004) Van Zyl J.; Van Rensburg C.; Vieweg W.; Fischer R.
Background/Aim: Gastroesophageal reflux disease (GERD) is a prevalent disease associated with a high symptom burden and a reduced quality of life. This multicenter, randomized, double-blind study compared relief from key GERD symptoms (heartburn, acid eructation, and pain on swallowing) and from other gastrointestinal symptoms (epigastric pain, vomiting, nausea, flatulence, retching, and retrosternal feeling of tightness) and safety profiles of the proton pump inhibitor pantoprazole and the H2 antagonist ranitidine in patients suffering from symptomatic GERD. Methods: The patients [338 intention-to-treat (ITT) population; 284 per-protocol (PP) population] received 20 mg pantoprazole (once daily in the morning) plus ranitidine placebo (once daily in the evening; ITT n = 167, PP n = 136) or pantoprazole placebo (once daily in the morning) plus 300 mg ranitidine (once daily in the evening; ITT n = 171, PP n = 148) for 28 days. The primary efficacy criterion (ITT and PP populations) was relief from key GERD symptoms (heartburn, acid eructation, and pain on swallowing) after 28 days of treatment. Secondary criteria (PP) included relief from key GERD symptoms on day 14, relief from all gastrointestinal symptoms on days 14 and 28, and relief from key GERD symptoms on days 14 and 28. Safety evaluations included adverse events and laboratory assessments. Results: Significantly more pantoprazole-treated patients were free from key GERD symptoms at day 28 (68.3%, n = 114) as compared with ranitidine-treated patients (43.3%, n = 74; 95% confidence interval for odds ratio 1.84-4.51). Pantoprazole was also significantly more efficacious in controlling all gastrointestinal symptoms of GERD. By day 28, 51.5% (n = 70) of the pantoprazole-treated patients were completely symptom free versus 31.1% (n = 46) of the ranitidine-treated patients (95% confidence interval for odds ratio1.45-3.83). Both treatments were well tolerated. Conclusion: Pantoprazole is significantly superior to ranitidine in the treatment of key and associated gastrointestinal symptoms of GERD and is well tolerated. Copyright © 2004 S. Karger AG, Basel.
Efficacy and tolerability of pantoprazole 40 mg versus 80 mg in patients with reflux oesophagitis
(1996) Van Rensburg C.J.; Honiball P.J.; Grundling H.D.K.; Van Zyl J.H.; Spies S.K.; Eloff F.P.; Simjee A.E.; Segal I.; Botha J.F.; Cariem A.K.; Marks I.N.; Theron I.; Bethke T.D.
Background: Pantoprazole is a substituted benzimidazole which is a potent inhibitor of gastric acid secretion by its action upon H+,K+-ATPase. Methods: Pantoprazole 40 mg and 80 mg were compared in a randomized double-blind study in 192 out-patients with stage II or III (Savary-Miller classification) reflux oesophagitis. Patients received either pantoprazole 40 mg (n = 97) or pantoprazole 80 mg (n = 95), once daily before breakfast for 4 weeks. Treatment was extended for a further 4 weeks if the oesophagitis had not healed. Results: After 4 weeks complete healing of the reflux oesophagitis was seen in 78% of protocol-correct patients given pantoprazole 40 mg daily (n = 86), and in 72% in the 80 mg (n = 87) group. The cumulative healing rates after 8 weeks were 95 and 94%, respectively (P > 0.05, Cochran-Mantel-Haenszel), and time until healing of oesophagitis comparable in both groups. Differences between doses were also not significant in an intention-to-treat analysis. Both dosing schedules were well tolerated and the patients experienced remarkable symptom relief. No adverse event or changes in laboratory values of clinical significance could definitely be ascribed to the trial medication. Conclusion: The 40 mg pantoprazole dosage is comparable to 80 mg in reflux oesophagitis, both in efficacy and tolerability.
Intragastric pH during Continuous Infusion with Pantoprazole in Patients with Bleeding Peptic Ulcer
(2003) Van Rensburg C.J.; Hartmann M.; Thorpe A.; Venter L.; Theron I.; Luhmann R.; Wurst W.
OBJECTIVES: In managing patients with bleeding peptic ulcers, prevention of rebleeding is a particular challenge to hemostasis and fibrinolysis, both of which involve reactions that are impaired in acidic gastric environment. Therefore, such patients are expected to benefit from profound acid suppression. The present investigation aimed to establish a safe and, with regard to pH elevation, effective treatment that, based on in vitro evidence, should provide clinical benefit in this patient population. METHODS: Patients with acute bleeding peptic ulcers (Forrest Ia, Ib, IIa) after successful endoscopic hemostasis were enrolled in two pilot studies (N = 20 each). They were given an intravenous bolus injection of 80 mg of pantoprazole immediately followed by continuous infusion of either 6 mg/h or 8 mg/h pantoprazole for 72 h. Intragastric pH was measured continuously over 24 h and, if possible, for up to 48 h. RESULTS: Intragastric pH increased rapidly to values of about 6 with both treatments. For the 0-24 h period, the median pH values were 6.1 (68% range 4.5-7.4) and 6.1 (68% range 5.2-6.7) in patients receiving 6 mg/h and 8 mg/h continuous infusion, respectively; the values for the 0-48 h period were 5.9 (4.9-6.7) and 6.3 (5.5-7.0), respectively. The median percentage time that pH was ≥6 during the 0-48 h interval was 47% (68% range 28-89) for the 6 mg/h treatment group and 64% (68% range 41-84) for the 8 mg/h treatment group. Both treatment regimens with pantoprazole were well tolerated based on electrocardiographic measurements, vital signs, clinical laboratory values, and adverse events. CONCLUSIONS: Compared with the infusion with 6 mg/h pantoprazole, the continuous infusion of 8 mg/h pantoprazole showed a lower interindividual variability of the intragastric pH and a greater percentage of time that pH was ≥6. Thus, with regard to safety and efficacy, an initial 80-mg bolus injection, followed by 8 mg/h continuous infusion, seems to be the adequate treatment in patients with a high risk of rebleeding. © 2003 by Am. Coll. of Gastroenterology.
No clinical benefit of adding cisapride to pantoprazole for treatment of gastro-oesophageal reflux disease
(2001) Van Rensburg C.J.; Bardhan K.D.
Objective Although a proton pump inhibitor (PPI) and a prokinetic drug are often combined for the medical treatment of gastro-oesophageal reflux disease (GORD), there are few well-conducted clinical studies on the efficacy and tolerability of this therapy. This study investigates whether pantoprazole plus cisapride leads to an additional benefit in comparison to pantoprazole alone. Design and setting Randomized double-blind prospective multicentre study conducted in patients of 33 hospitals in Ireland, South Africa and the UK. Participants A total of 350 intention-to-treat (ITT) patients aged 18 years or older with GORD of grade II and III were included in the study. The per-protocol (PP) population comprised 152 patients in the pantoprazole group and 136 in the pantoprazole plus cisapride group. Interventions Patients received either pantoprazole 40 mg once daily or pantoprazole 40 mg once daily plus cisapride 20 mg twice daily. Treatment outcome was assessed after 4 and 8 weeks. The primary criterion was endoscopically confirmed healing after 4 weeks. Additionally, relief of leading symptoms was studied. Main outcome measures The prior null hypothesis was no difference in healing rates between both treatment groups. Results After 4 weeks of treatment 81% and 82%, and after 8 weeks 89% and 90%, of PP patients treated with pantoprazole or pantoprazole plus cisapride were healed, respectively. Thus, equivalence of the two treatment strategies could be proven. Additionally, improvement of symptom relief showed no significant difference between the two regimens. In contrast to disease grade at baseline, Helicobacter pylori status did not influence the healing rates in our study. Both study medications were tolerated well. Conclusion Addition of cisapride to pantoprazole provides no further benefit in the treatment of GORD. © 2001 Lippincott Williams & Wilkins.
Safety and efficacy of pantoprazole 40 mg daily as relapse prophylaxis in patients with healed reflux oesophagitis - A 2-year follow-up
(1999) Van Rensburg C.J.; Honiball P.J.; Van Zyl J.H.; De Grundling H.K.; Eloff F.P.; Spies S.K.; Simjee A.E.; Theron I.; Fischer R.; Louw J.A.
Background: Pantoprazole is a benzimidazole derivative which selectively inhibits the proton pump H+, K+-ATPase, necessary for the final step in gastric acid secretion. Aim: To assess safety and efficacy of oral pantoprazole (40 mg o.d.) used as a prophylaxis against relapse in patients with healed reflux oesophagitis during an open-label, 2-year study. Methods: Outpatients (n = 157) with healed stage II or III reflux oesophagitis (Savary-Miller classification) were enrolled into a long-term, multicentre maintenance study. Endoscopy was performed at entry into the study, after 12 and 24 months, or when disease-specific symptoms occurred on more than three consecutive days. Symptoms were assessed at 3-monthly intervals. Endoscopically confirmed relapses (at least stage I) were evaluated as treatment failures. Results: Of the 178 adverse events, experienced by 88 (56%) patients (intention-to-treat population), 12 (7%) were assessed by the investigators as possibly related to the study medication. Median serum gastrin levels increased from a baseline of 46 ng/L to 90 ng/L, reaching a plateau after 9 months. For the intention-to-treat population the endoscopic remission rates after 12 and 24 months were 87% and 76%, respectively (Life-Table survival analysis, Kaplan-Meier). Conclusion: Pantoprazole 40 mg proved to be safe and efficacious during a 2-year prophylaxis treatment in patients with healed reflux oesophagitis.

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