Melbourne University Sport - Research Publications

Permanent URI for this collection

Search Results

Now showing 1 - 2 of 2
  • Item
    Thumbnail Image
    The epidemiology of in-hospital cardiac arrests in Australia and New Zealand
    Fennessy, G ; Hilton, A ; Radford, S ; Bellomo, R ; Jones, D (WILEY, 2016-10-01)
    BACKGROUND: The epidemiology of in-hospital cardiac arrests (IHCA) in Australia and New Zealand (ANZ) has not been systematically assessed. AIM: To conduct a systematic review of the frequency, characteristics and outcomes of adult IHCA in ANZ. METHODS: Medline search for studies published in 1964-2014 using MeSH terms 'arrest AND hospital AND Australia', 'arrest AND hospital AND New Zealand', 'inpatient AND arrest AND Australia' and 'inpatient AND arrest AND New Zealand'. RESULTS: We screened 934 studies, analysed 50 and included 30. Frequency of IHCA ranged from 1.31 to 6.11 per 1000 admissions in 4 population studies and 0.58 to 4.59 per 1000 in 16 cohort studies. The frequency was 4.11 versus 1.32 per 1000 admissions in hospitals with rapid response system (RRS) compared with those without (odds ratio: 0.32; 95% confidence interval 0.28-0.37; P < 0.001). On aggregate, the initial cardiac rhythm was ventricular tachycardia/fibrillation in 31.4% (range 19.0-48.8%) in 10 studies reporting such data. On aggregate, IHCA were witnessed in 80.2% cases (three studies) and monitored patients in 53.4% cases (four studies). Details of life support were poorly documented. On aggregate, return of spontaneous circulation occurred in 46.0% of patients. Overall, 74.6% (range 59.4-77.5%) died in-hospital but survival was higher among monitored or younger patients, in those with a shockable rhythm, or during working hours. CONCLUSION: IHCA are uncommon in ANZ and three quarters die in-hospital. However, their frequency varies markedly across institutions and may be affected by the presence of RRS. Where reported, the long-term outcomes survivors appear to have acceptable neurological outcomes.
  • Item
    Thumbnail Image
    Effect of Vitamin C, Hydrocortisone, and Thiamine vs Hydrocortisone Alone on Time Alive and Free of Vasopressor Support Among Patients With Septic Shock The VITAMINS Randomized Clinical Trial
    Fujii, T ; Luethi, N ; Young, PJ ; Frei, DR ; Eastwood, GM ; French, CJ ; Deane, AM ; Shehabi, Y ; Hajjar, LA ; Oliveira, G ; Udy, AA ; Orford, N ; Edney, SJ ; Hunt, AL ; Judd, HL ; Bitker, L ; Cioccari, L ; Naorungroj, T ; Yanase, F ; Bates, S ; McGain, F ; Hudson, EP ; Al-Bassam, W ; Dwivedi, DB ; Peppin, C ; McCracken, P ; Orosz, J ; Bailey, M ; Bellomo, R ; French, CJ ; Deane, AM ; Hajjar, LA ; Oliveira, G ; Orford, N ; Shehabi, Y ; Udy, AA ; Young, PJ ; McCracken, P ; Board, J ; Martin, E ; Vallance, S ; Young, M ; Bellomo, R ; Eastwood, GM ; Cioccari, L ; Bitker, L ; Yanase, F ; Naorungroj, T ; Hessels, L ; Peck, L ; Young, H ; Percy, N ; Shepherd, K ; Peppin, C ; Dwivedi, DB ; Lukas, G ; Fazli, F ; Murfin, B ; Bates, S ; Morgan, R ; Marshall, F ; Tippett, A ; Towns, M ; Elderkin, T ; Bone, A ; Salerno, T ; Hudson, EP ; Barge, D ; Anstey, J ; Abdelhamid, YA ; Jelbart, B ; Byrne, K ; Tascone, B ; Doherty, S ; Beehre, N ; Hunt, A ; Judd, H ; Latimer-Bell, C ; Lawrence, C ; Robertson, Y ; Smellie, H ; Vucago, AM ; Bailey, M ; Fujii, T ; Howe, BD ; Luethi, N ; Murray, L ; Trapani, T (AMER MEDICAL ASSOC, 2020-02-04)
    Importance: It is unclear whether vitamin C, hydrocortisone, and thiamine are more effective than hydrocortisone alone in expediting resolution of septic shock. Objective: To determine whether the combination of vitamin C, hydrocortisone, and thiamine, compared with hydrocortisone alone, improves the duration of time alive and free of vasopressor administration in patients with septic shock. Design, Setting, and Participants: Multicenter, open-label, randomized clinical trial conducted in 10 intensive care units in Australia, New Zealand, and Brazil that recruited 216 patients fulfilling the Sepsis-3 definition of septic shock. The first patient was enrolled on May 8, 2018, and the last on July 9, 2019. The final date of follow-up was October 6, 2019. Interventions: Patients were randomized to the intervention group (n = 109), consisting of intravenous vitamin C (1.5 g every 6 hours), hydrocortisone (50 mg every 6 hours), and thiamine (200 mg every 12 hours), or to the control group (n = 107), consisting of intravenous hydrocortisone (50 mg every 6 hours) alone until shock resolution or up to 10 days. Main Outcomes and Measures: The primary trial outcome was duration of time alive and free of vasopressor administration up to day 7. Ten secondary outcomes were prespecified, including 90-day mortality. Results: Among 216 patients who were randomized, 211 provided consent and completed the primary outcome measurement (mean age, 61.7 years [SD, 15.0]; 133 men [63%]). Time alive and vasopressor free up to day 7 was 122.1 hours (interquartile range [IQR], 76.3-145.4 hours) in the intervention group and 124.6 hours (IQR, 82.1-147.0 hours) in the control group; the median of all paired differences was -0.6 hours (95% CI, -8.3 to 7.2 hours; P = .83). Of 10 prespecified secondary outcomes, 9 showed no statistically significant difference. Ninety-day mortality was 30/105 (28.6%) in the intervention group and 25/102 (24.5%) in the control group (hazard ratio, 1.18; 95% CI, 0.69-2.00). No serious adverse events were reported. Conclusions and Relevance: In patients with septic shock, treatment with intravenous vitamin C, hydrocortisone, and thiamine, compared with intravenous hydrocortisone alone, did not significantly improve the duration of time alive and free of vasopressor administration over 7 days. The finding suggests that treatment with intravenous vitamin C, hydrocortisone, and thiamine does not lead to a more rapid resolution of septic shock compared with intravenous hydrocortisone alone. Trial Registration: ClinicalTrials.gov Identifier: NCT03333278.