Harry C. Alexander
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Harry C. Alexander has a total of 33 co-authors. Here are the top co-authors by number of shared publications:
- Alan Forbes Merry
University of Auckland
2 shared publications Cindy H. Nguyen
Department of Surgery, Auckland District Health Board, Auckland, New Zealand
2 shared publications- Robert Hywel Thomas
Department of Radiology, Imperial College London , London , UK
2 shared publications Adam Bartlett
Department of Surgery, Faculty of Medical and Health Sciences University of Auckland Grafton New Zealand
1 shared publication- Adam Bartlett
Department of Surgery, Auckland District Health Board , Auckland , New Zealand
1 shared publication Adam S. Bartlett
Department of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
1 shared publication
Latest Publications
- Open Access
- 4 November 2025
- Published by Elsevier in Clinical Radiology
- Vol. 92, 107158
Natural history and clinical significance of postoperative pneumoperitoneum: a systematic review and meta-analysis
- 4 November 2025
- Published by Elsevier in Clinical Radiology
- Vol. 92, 107158
Open AccessNatural history and clinical significance of postoperative pneumoperitoneum: a systematic review and meta-analysis
- Open Access
- 17 October 2022
- Published by Wiley in Anz Journal of Surgery
- Vol. 92 (11) , 2889-2895
Days alive and out of hospital after laparoscopic cholecystectomy
Background: Days alive and out of hospital (DAOH) is a metric that incorporates several outcomes into a single, standardized measure. This study aimed to explore the utility of DAOH in assessing the outcomes of a retrospective cohort of patients undergoing laparoscopic cholecystectomy (LC).Methods: Patients undergoing LC at Auckland City Hospital between 1 January 2010 and 31 August 2015 were included. DAOH values were calculated for the 90 days from the date of surgery (DAOH90) and described using median and interquartile ranges (IQR). DAOH90 distributions were compared using a two‐tailed (non‐parametric) Wilcoxon‐Mann–Whitney test.Results: 1652 patients undergoing LC were studied. Patients experiencing complications (n = 70, 4.2%) had fewer DAOH90 (median 83, IQR 79, 86) than patients who underwent uncomplicated LC (median 88, IQR 86, 88), P < 0.001. Patients who were converted to open cholecystectomy (n = 70, 4.2%) also had fewer DAOH90 (median 82.5, IQR 79, 84) than patients who underwent uncomplicated LC, P < 0.001. Post‐operative complications and conversion had a statistically significant effect on DAOH90 at each of the tested quantiles, except for conversion at the 0.1 quantile.Conclusion: DAOH90 is readily calculable from existing New Zealand administrative data sources and is sensitive to the occurrence of complications after LC.
- 17 October 2022
- Published by Wiley in Anz Journal of Surgery
- Vol. 92 (11) , 2889-2895
Open AccessDays alive and out of hospital after laparoscopic cholecystectomy
Background: Days alive and out of hospital (DAOH) is a metric that incorporates several outcomes into a single, standardized measure. This study aimed to explore the utility of DAOH in assessing the outcomes of a retrospective cohort of patients undergoing laparoscopic cholecystectomy (LC).Methods: Patients undergoing LC at Auckland City Hospital between 1 January 2010 and 31 August 2015 were included. DAOH values were calculated for the 90 days from the date of surgery (DAOH90) and described using median and interquartile ranges (IQR). DAOH90 distributions were compared using a two‐tailed (non‐parametric) Wilcoxon‐Mann–Whitney test.Results: 1652 patients undergoing LC were studied. Patients experiencing complications (n = 70, 4.2%) had fewer DAOH90 (median 83, IQR 79, 86) than patients who underwent uncomplicated LC (median 88, IQR 86, 88), P < 0.001. Patients who were converted to open cholecystectomy (n = 70, 4.2%) also had fewer DAOH90 (median 82.5, IQR 79, 84) than patients who underwent uncomplicated LC, P < 0.001. Post‐operative complications and conversion had a statistically significant effect on DAOH90 at each of the tested quantiles, except for conversion at the 0.1 quantile.Conclusion: DAOH90 is readily calculable from existing New Zealand administrative data sources and is sensitive to the occurrence of complications after LC.
- 7 September 2022
- Published by Elsevier in Journal of Vascular and Interventional Radiology
- Vol. 33 (12) , 1559-1569.e2
Transarterial Radioembolization for Hepatic Metastases of Pancreatic Adenocarcinoma: A Systematic Review
- 7 September 2022
- Published by Elsevier in Journal of Vascular and Interventional Radiology
- Vol. 33 (12) , 1559-1569.e2
Transarterial Radioembolization for Hepatic Metastases of Pancreatic Adenocarcinoma: A Systematic Review
- 10 November 2021
- Published by Oxford University Press (OUP) in British Journal of Radiology
- Vol. 95 (1129) , 20210200
Selective internal radiation therapy for hepatic metastases of uveal melanoma: a systematic review
Objective: Uveal melanoma (UM) commonly metastasizes to the liver. Treatment usually consists of liver-directed therapies, such as selective internal radiation therapy (SIRT). This review aimed to assess the effectiveness and safety of SIRT for hepatic metastases from UM. Methods: The study protocol is available at OSF (https://osf.io/vhyct/). EMBASE and MEDLINE were searched until July 2020, using terms related to SIRT and hepatic metastases from UM. Studies reporting outcomes of SIRT in patients with UM and at least one hepatic metastasis were included. Data on overall survival (OS), hepatic progression free survival (hPFS) or tumor response were collected. The Newcastle-Ottawa Scale (NOS) was used to assess risk of bias. Results: 11 studies were included, reporting outcomes for 268 patients with hepatic metastases from UM. Most studies (n = 9, 81.8%) were retrospective. Disease control was achieved in 170 patients (67.5%) and the median OS from time of SIRT was 12.3 months. Median hPFS was 5.4 months. Low-grade side-effects were common but serious complications were infrequent. There were two treatment-related deaths. The median NOS score was 6 (moderate risk of bias). Conclusion: SIRT appears to be a safe and effective treatment for patients with unresectable hepatic metastases from UM. The certainty of our results is unclear due to predominantly retrospective data with moderate risk of bias. Further prospective studies are required to explore the role of SIRT in UM. Advances in knowledge: SIRT appears to be a safe treatment for patients with unresectable hepatic metastases from UM. Further prospective work is required.
- 10 November 2021
- Published by Oxford University Press (OUP) in British Journal of Radiology
- Vol. 95 (1129) , 20210200
Selective internal radiation therapy for hepatic metastases of uveal melanoma: a systematic review
Objective: Uveal melanoma (UM) commonly metastasizes to the liver. Treatment usually consists of liver-directed therapies, such as selective internal radiation therapy (SIRT). This review aimed to assess the effectiveness and safety of SIRT for hepatic metastases from UM. Methods: The study protocol is available at OSF (https://osf.io/vhyct/). EMBASE and MEDLINE were searched until July 2020, using terms related to SIRT and hepatic metastases from UM. Studies reporting outcomes of SIRT in patients with UM and at least one hepatic metastasis were included. Data on overall survival (OS), hepatic progression free survival (hPFS) or tumor response were collected. The Newcastle-Ottawa Scale (NOS) was used to assess risk of bias. Results: 11 studies were included, reporting outcomes for 268 patients with hepatic metastases from UM. Most studies (n = 9, 81.8%) were retrospective. Disease control was achieved in 170 patients (67.5%) and the median OS from time of SIRT was 12.3 months. Median hPFS was 5.4 months. Low-grade side-effects were common but serious complications were infrequent. There were two treatment-related deaths. The median NOS score was 6 (moderate risk of bias). Conclusion: SIRT appears to be a safe and effective treatment for patients with unresectable hepatic metastases from UM. The certainty of our results is unclear due to predominantly retrospective data with moderate risk of bias. Further prospective studies are required to explore the role of SIRT in UM. Advances in knowledge: SIRT appears to be a safe treatment for patients with unresectable hepatic metastases from UM. Further prospective work is required.
- 1 November 2021
- Published by Elsevier in Annals of Vascular Surgery
- Vol. 77, 306-314
Reporting of Clinical Outcomes After Endovascular Aortic Aneurysm Repair: A Systematic Review
- 1 November 2021
- Published by Elsevier in Annals of Vascular Surgery
- Vol. 77, 306-314
Reporting of Clinical Outcomes After Endovascular Aortic Aneurysm Repair: A Systematic Review
- 11 March 2021
- Published by Oxford University Press (OUP) in British Journal of Radiology
- Vol. 94 (1121) , 20200980
Checklists for image-guided interventions: a systematic review
Objectives: Safety checklists have improved safety in patients undergoing surgery. Checklists have been designed specifically for use in image-guided interventions. This systematic review aimed to identify checklists designed for use in radiological interventions and to evaluate their efficacy for improving patient safety. Secondary aims were to evaluate attitudes toward checklists and barriers to their use. Methods: OVID, MEDLINE, CENTRAL and CINAHL were searched using terms for “interventional radiology” and “checklist”. Studies were included if they described pre-procedural checklist use in vascular/body interventional radiology (IR), paediatric IR or interventional neuro-radiology (INR). Data on checklist design, implementation and outcomes were extracted. Results: Sixteen studies were included. Most studies (n = 14, 87.5%) focused on body IR. Two studies (12.5%) measured perioperative outcome after checklist implementation, but both had important limitations. Checklist use varied between 54 and 100% and completion of items on the checklists varied between 28 and 100%. Several barriers to checklist use were identified, including a lack of leadership and education and cultural challenges unique to radiology. Conclusions: We found few reports of the use of checklists in image-guided interventions. Approaches to checklist implementation varied, and several barriers to their use were identified. Evaluation has been limited. There seems to be considerable potential to improve the effective use of checklists in radiological procedures. Advances in knowledge: There are few reports of the use of checklists in radiological interventions, those identified reported significant barriers to the effective use of checklists.
- 11 March 2021
- Published by Oxford University Press (OUP) in British Journal of Radiology
- Vol. 94 (1121) , 20200980
Checklists for image-guided interventions: a systematic review
Objectives: Safety checklists have improved safety in patients undergoing surgery. Checklists have been designed specifically for use in image-guided interventions. This systematic review aimed to identify checklists designed for use in radiological interventions and to evaluate their efficacy for improving patient safety. Secondary aims were to evaluate attitudes toward checklists and barriers to their use. Methods: OVID, MEDLINE, CENTRAL and CINAHL were searched using terms for “interventional radiology” and “checklist”. Studies were included if they described pre-procedural checklist use in vascular/body interventional radiology (IR), paediatric IR or interventional neuro-radiology (INR). Data on checklist design, implementation and outcomes were extracted. Results: Sixteen studies were included. Most studies (n = 14, 87.5%) focused on body IR. Two studies (12.5%) measured perioperative outcome after checklist implementation, but both had important limitations. Checklist use varied between 54 and 100% and completion of items on the checklists varied between 28 and 100%. Several barriers to checklist use were identified, including a lack of leadership and education and cultural challenges unique to radiology. Conclusions: We found few reports of the use of checklists in image-guided interventions. Approaches to checklist implementation varied, and several barriers to their use were identified. Evaluation has been limited. There seems to be considerable potential to improve the effective use of checklists in radiological procedures. Advances in knowledge: There are few reports of the use of checklists in radiological interventions, those identified reported significant barriers to the effective use of checklists.
- 1 April 2019
- Published by Springer Nature in Surgical Endoscopy
- Vol. 33 (7) , 2061-2071
Measurement of patient-reported outcomes after laparoscopic cholecystectomy: a systematic review
Patient-reported outcome (PRO) measures (PROMs) are increasingly used as endpoints in surgical trials. PROs need to be consistently measured and reported to accurately evaluate surgical care. Laparoscopic cholecystectomy (LC) is a commonly performed procedure which may be evaluated by PROs. We aimed to evaluate the frequency and consistency of PRO measurement and reporting after LC.
- 1 April 2019
- Published by Springer Nature in Surgical Endoscopy
- Vol. 33 (7) , 2061-2071
Measurement of patient-reported outcomes after laparoscopic cholecystectomy: a systematic review
Patient-reported outcome (PRO) measures (PROMs) are increasingly used as endpoints in surgical trials. PROs need to be consistently measured and reported to accurately evaluate surgical care. Laparoscopic cholecystectomy (LC) is a commonly performed procedure which may be evaluated by PROs. We aimed to evaluate the frequency and consistency of PRO measurement and reporting after LC.