Crettenand François

Dr. Crettenand François

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 September 2022 in Medicine
Verified
Journal Article
Open access
CFCrettenand François
Crettenand François
OMOlivier M’bAya
Olivier M’bAya
NGNuno Grilo
Nuno Grilo
MVMassimo Valerio
Massimo Valerio
FDFlorence Bsc Dartiguenave
Florence Bsc Dartiguenave
ILIlaria Lucca
Ilaria Lucca
Introduction: To evaluate Enhanced recovery after surgery (ERAS®) protocol on oncological outcomes for patients treated with radical cystectomy (RC) for urothelial carcinoma of the bladder (UCB). Methods: A prospectively maintained single-institutional database comprising 160 consecutive UCB patients who underwent open RC from 2012 to 2020 was analyzed. Patients receiving chemotherapy and those with a urinary diversion other than ileal conduit were excluded. Patients were divided into two groups according to the perioperative management (ERAS® and pre-ERAS®). The study aimed to evaluate the impact of the ERAS® protocol on survival at five years after surgery using a Kaplan–Meier log-rank test. A multivariable Cox proportional hazards model was used to identify prognostic factors for cancer-specific (CSS) and overall survival (OS). Results: Of the 107 patients considered for the final analysis, 74 (69%) were included in the ERAS® group. Median follow-up for patients alive at last follow-up was 28 months (interquartile range [IQR] 12–48). Five-years CSS rate was 74% for ERAS® patients, compared to 48% for the control population (P = 0.02), while 5-years OS was 31% higher in the ERAS® (67% vs. 36%, P = .003). In the multivariable analysis, ERAS® protocol and tumor stage were independent factors of CSS, while ERAS®, tumor stage so as total blood loss were independent factors for OS. Discussion: A dedicated ERAS® protocol for UCB patients treated with RC has a significant impact on survival. Reduction of stress after a major surgery and its potential improvement of perioperative patient’s immunity may explain these data.

19 April 2023 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
CFCrettenand François
Crettenand François
NANady Assayed-Leonardi
Nady Assayed-Leonardi
FRFelix Rohrer
Felix Rohrer
SCSilvia Martinez Carrique
Silvia Martinez Carrique
BRBeat Roth
Beat Roth
Background: Despite increasingly advanced minimally invasive percutaneous ablation techniques, surgery remains the only evidence-based therapy in curative intent for larger (>3–4 cm) renal tumors. Although minimally invasive surgery using (robotic-assisted) laparoscopic or retroperitoneoscopic approaches has gained popularity, open nephrectomy (ON) is still performed in 25% of cases, especially in tumors with central localization (partial ON) or large tumors with/without cava thrombus (total ON). As postoperative pain is one of the drawbacks of ON, our study aims to assess recovery and post-operative pain management using continuous wound infiltration (CWI) compared to thoracic epidural analgesia (TEA). Methods: Since 2012, all patients undergoing ON at our tertiary cancer center at CHUV have been included in our prospective ERAS® (enhanced recovery after surgery) registry that is centrally stored in ERAS® Interactive Audit System (EIAS) secured server. This study represents an analysis of all patients operated on with partial or total ON at our center between 2012 and 2022. An additional analysis was performed for the estimations of the total cost of CWI and TEA, based on the diagnosis-related group method. Results: 92 patients were included and analyzed in this analysis (n = 64 (70%) with CWI; n = 28 (30%) with TEA). Adequate oral pain control was earlier achieved in the CWI group compared to the TEA group (median 3 vs. 4 days; p = 0.001), whereas immediate postoperative pain relief was better in the TEA group (p = 0.002). Consequently, opioid use was higher in the CWI group (p = 0.004). Still, reported nausea was lower in the CWI group (p = 0.002). Median time to bowel recovery was similar in both groups (p = 0.03). A shorter LOS (0.5 days) was observed in patients managed with CWI, although this was not statistically significant (p = 0.06). The use of CWI has reduced total hospital costs by nearly 40%. Conclusions: TEA has better results in terms of postoperative pain management compared to CWI following ON. However, CWI is better tolerated, and causes less nausea and earlier recovery, which leads to a shorter length of stay. Given its simplicity and cost-effectiveness, CWI should be encouraged for ON.

25 January 2024 in Diagnostics
Verified
Journal Article
Open access
PDF file
NGNuno Grilo
Nuno Grilo
CFCrettenand François
Crettenand François
PBPerrine Bohner
Perrine Bohner
SDSonia Cristina Rodrigues Dias
Sonia Cristina Rodrigues Dias
YCYannick Cerantola
Yannick Cerantola
ILIlaria Lucca
Ilaria Lucca
Background: Despite existing standardized surgical techniques and the development of new perioperative care protocols, radical cystectomy (RC) morbidity remains a serious challenge for urologists. Postoperative ileus (POI) is one of the most common postoperative complications, often leading to a longer length of stay (LOS). The aim of our study was to assess the impact of compliance to the Enhanced Recovery After Surgery (ERAS®) protocol on bowel recovery, 30-day complications and LOS after RC for bladder cancer (BC). Methods: Data from consecutive patients undergoing RC for BC within an ERAS® dedicated protocol were analyzed. Exclusion criteria were urinary diversion other than ileal conduit and palliative RC. Patients were divided into two groups according to their compliance (A: low-compliance and B: high-compliance). ERAS® compliance was extracted from the ERAS® Interactive Audit System (EIAS) database. Postoperative complications were prospectively recorded by a dedicated study nurse 30 days after RC. POI was defined as the placement of a nasogastric tube. Logistic regression analysis was used to identify predictors of 30-day complications and POI. Results: After considering the exclusion criteria, 108 patients were included for the final analysis. The median global compliance to the ERAS® protocol was 61%. A total of 78 (72%) patients had a compliance 65% (group B). No significant differences were found among the two groups regarding the 30-day complication rate (86% in group A versus 73% in group B, p = 0.82) and LOS (14 days in group A versus 15 days in group B, p = 0.82). The time to stool was significantly shorter in group B (4 days versus 6 days, p = 0.02), and the time to tolerate solid food was slightly faster in group B but not significant (8 versus 7 days, p = 0.23). The POI rate was significantly lower in patients with a higher ERAS® compliance (20% versus 46%, p = 0.01). A multivariate analysis showed that ERAS® compliance was not significantly associated with 30-day total complications. However, a lower compliance to the ERAS® protocol and age > 75 years were significant independent predictors of POI. Conclusions: Our study provides further evidence to support the beneficial effect of the ERAS® protocol in patients undergoing RC, particularly in terms of facilitating a faster recovery of bowel function and preventing POI. Future research should focus on investigating novel approaches and interventions to improve compliance with the ERAS® protocol. This may involve patient education, multidisciplinary teamwork, and continuous quality improvement initiatives.

10 March 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
SCSilvia Martinez Carrique
Silvia Martinez Carrique
CFCrettenand François
Crettenand François
KSKevin Stritt
Kevin Stritt
PBPerrine Bohner
Perrine Bohner
NGNuno Grilo
Nuno Grilo
ILIlaria Lucca
Ilaria Lucca
Background: Cystectomy with urinary diversion (CUD) is a highly morbid surgery. Despite implementing an enhanced recovery after surgery (ERAS®) protocol, postoperative respiratory complications (PRC) within 30 days after surgery remain frequent. This study aims to identify patients at higher risk of developing PRC after CUD. Methods: We conducted a retrospective analysis of 242 patients who underwent CUD at Lausanne University Hospital from 2012 to 2022, adhering to ERAS® guidelines. Data on postoperative complications, including pneumonia, respiratory failure, pulmonary embolism, lobar atelectasis, and pleural effusion, were analyzed. Chi-square and Mann–Whitney U tests compared patients with and without PRC. A multivariable Cox model identified independent prognostic factors. Results: PRC occurred in 41 patients (17%). Those with PRC experienced longer hospital stays and higher 30-day mortality rates. Poor ERAS® compliance was a significant risk factor. Multivariable analysis showed pneumonia was associated with postoperative ileus, while pulmonary embolism correlated with infectious and cardiovascular complications. Conclusions: PRC result in extended hospitalization and decreased survival. Rigorous adherence to ERAS® protocols, including early mobilization, respiratory physiotherapy, and avoiding nasogastric tubes, is essential for preventing PRC.

15 March 2019 in European Urology Supplements
Verified
Journal Article
Closed access
CFCrettenand François
Crettenand François
OMO. M’baya
O. M’baya
PJP. Jichlinski
P. Jichlinski
PMP. Martel
P. Martel
FDF. Dartiguenave
F. Dartiguenave
ILI. Lucca
I. Lucca

23 October 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
BBBeatrice Breu
Beatrice Breu
MOMatteo Ortolini
Matteo Ortolini
AMAudrey Masnada
Audrey Masnada
CFCrettenand François
Crettenand François
NGNuno Grilo
Nuno Grilo
KSKevin Stritt
Kevin Stritt
Background/Objectives: To compare postoperative infectious complication rates after ureteroscopy (URS) in patients with anatomical anomalies of the urinary tract and neurogenic bladder to those in patients without these conditions, and to analyze associated risk factors, urine culture profiles, and stone composition in these special populations. Methods: This retrospective cohort study included patients undergoing URS at a single tertiary referral center. Patients were stratified into three groups: anatomical anomalies of the urinary tract (n = 23), neurogenic bladder (n = 30), and controls (n = 297). Demographic data, perioperative details, preoperative urine culture results, stone composition, and postoperative complications were collected and compared. Univariable analyses and chi-square or Kruskal–Wallis tests were used as appropriate. Results: Patients with anatomical anomalies of the urinary tract and neurogenic bladder had significantly higher rates of postoperative infectious complications compared to controls (30.4% and 33.3% vs. 4.0%; p < 0.001). Preoperative urine cultures were more frequently positive in these groups, with Escherichia coli, Enterococcus faecalis, and Pseudomonas aeruginosa being the most common pathogens. Stone analysis revealed a higher proportion of struvite and mixed calcium phosphate stones in the anatomical anomalies of the urinary tract and neurogenic bladder groups compared to controls, who predominantly formed calcium oxalate stones (75%). Conclusions: Patients with anatomical anomalies of the urinary tract or neurogenic bladder are at higher risk of postoperative infectious complications following URS, likely due to more frequent colonization and anatomical or functional urinary tract abnormalities. These findings underscore the importance of tailored perioperative management, including targeted antimicrobial strategies and careful surgical planning, to mitigate risks in these high-risk populations.