Perioperative factors predicting delayed enteral resumption and hospital length of stay in cytoreductive surgery with hyperthermic intraperitoneal chemotherapy: Retrospective cohort analysis from a single centre in India

Impact of fluid and haemodynamic management in cytoreductive surgery with hyperthermic intraperitoneal chemotherapy on postoperative outcomes - A systematic review

Background and Aims

Cytoreduction surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is an extensive surgery associated with significant fluid shift and blood loss. The haemodynamic management and fluid therapy protocol may impact postoperative outcomes. This systematic review was conducted to find the effect of haemodynamic monitoring and perioperative fluid therapy in CRS-HIPEC on postoperative outcomes.

Methods

We searched PubMed, Scopus and Google Scholar. All studies published between 2010 and 2022 involving CRS-HIPEC surgeries that compared the effect of fluid therapy and haemodynamic monitoring on postoperative outcomes were included. Keywords for database searches included a combination of Medical Subject Headings terms and plain text related to the CRS-HIPEC procedure. The risk of bias and the certainty assessment were done by Risk of Bias-2 and the methodological index for non-randomised studies.

Results

The review included 16 published studies out of 388 articles. The studies were heterogeneous concerning the design type and parameter measures. The studies with goal-directed fluid therapy protocol had a duration of intensive care unit (ICU) stay that varied from 1 to 20 days, while mortality varied from 0% to 9.5%. The choice of fluid, crystalloid versus colloid, remains inconclusive. The studies that compared crystalloids and colloids for perioperative fluid management did not show a difference in clinical outcomes.

Conclusion

The interpretation of the available literature is challenging because the definitions of various fluid regimens and haemodynamic goals are not uniform among studies. An individualised approach to perioperative fluid therapy and a justified dynamic index cut-off for haemodynamic monitoring seem reasonable for CRS-HIPEC procedures.

Perioperative nutritional assessment and interventions in patients undergoing cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (HIPEC): A systematic review

BACKGROUND

Peritoneal carcinomatosis is a catabolic state and cytoreductive surgery (CRS) is a high morbidity operation. Optimising perioperative nutrition is crucial to improve outcomes. This systematic review sought to examine literature describing clinical outcomes related to preoperative nutrition status and nutrition interventions in patients undergoing CRS with hyperthermic intraperitoneal chemotherapy (HIPEC).

METHODS

A systematic review was registered with PROSPERO (300326). A search of eight electronic databases was undertaken on 8th May 2022 and reported according to the PRISMA statement. Studies reporting nutrition status through use of screening and assessment tools, nutrition interventions or nutrition-related clinical outcomes for patients undergoing CRS with HIPEC were included.

RESULTS

Of 276 screened studies, 25 studies were included for review. Commonly used nutrition assessment tools for CRS-HIPEC patients included Subjective Global Assessment (SGA), sarcopenia assessment with computed tomography, preoperative albumin, and body mass index (BMI). Three retrospective studies compared SGA with postoperative outcomes. Malnourished patients were more likely to have postoperative infectious complications (p = 0.042 SGA-B, p = 0.025 SGA-C). Malnutrition was significantly associated with increased hospital length of stay (LOS) in two studies (p = 0.006, p = 0.02), and with overall survival in another study (p = 0.006). Eight studies analysing preoperative albumin levels reported conflicting associations with postoperative outcomes. BMI in five studies was not associated with morbidity. One study did not support routine nasogastric tube (NGT) feeding.

CONCLUSIONS

Preoperative nutritional assessment tools, including SGA and objective sarcopaenia measures, have a role in predicting nutritional status for CRS-HIPEC patients. Optimisation of nutrition is important for preventing complications.

Early Postoperative Extubation is Associated with Shorter Hospitalization and Improved Short-Term Survival in Patients Undergoing Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy

BACKGROUND

Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) is associated with significant operative time, hospital resources, and morbidity. We examine factors associated with hospital length of stay (LOS) and early overall survival (OS) after CRS/HIPEC.

MATERIALS AND METHODS

Patients who underwent CRS/HIPEC were evaluated for factors associated with LOS. Institutional learning curve influence was addressed by comparing early vs late cohorts. Variables with P < .200 after univariate analysis were considered for inclusion in multivariate linear regression modeling. Independent factors associated with OS were evaluated using the Kaplan-Meier method.

RESULTS

Seventy patients underwent CRS/HIPEC (mean age 52.3 years, 64.3% female, and 68.6% Caucasian). Presence of any surgical complication was found in 26 (37.1%), 28 (40%) remained intubated postoperatively, and the mean Peritoneal Carcinomatosis Index (PCI) score was 14.4 (±10.4). Mean intensive care unit and hospital LOS were 2.9 days (±2.3) and 9.6 days (±3.6), respectively. After adjusting for covariates, only shorter time to postoperative ambulation (regression coefficient .92, P = .001) and early extubation (regression coefficient -1.90, P = .018) were associated with decreased hospital LOS on multivariate analysis. Immediate postoperative extubation conferred an independent early survival benefit on Kaplan-Meier analysis (mean OS 714.8 vs 473.4 days, P = .010). There was no difference in hospital LOS or OS between early and late cohorts.

CONCLUSION

Early postoperative extubation and shorter time to ambulation are associated with decreased hospital LOS. Moreover, CRS/HIPEC patients extubated immediately postoperatively have an early survival benefit. Every effort should be made to achieve early postoperative extubation and mobilization in CRS/HIPEC patients.

Utility of lung ultrasound for extravascular lung water volume estimation during cytoreductive surgery and hyperthermic intraperitoneal chemotherapy

Background and Aims:

Rising extravascular lung-water index (ELWI) following cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS + HIPEC), if not timely intervened, can progress to pulmonary oedema. Transpulmonary thermodilution (TPTDL) is a standard technique to estimate ELWI (T-ELWI score), and track ongoing changes. Lung ultrasound (LUS) is another technique for ELWI (L-ELWI score) estimation. However, reproducibility and reliability of LUS for tracking serial L-ELWI changes during CRS + HIPEC remains to be validated.

Methods:

This prospective observational study included 360 L-ELWI and T-ELWI measurements at 12 peri-operative time-points. Cohen's Kappa test was used to assess reproducibility, Inter-rater agreement (between the anaesthetist and radiologist), and agreement between LUS and TPTDL for classifying the severity of pulmonary oedema. Reliability of LUS for 'tracking serial changes' in ELWI over time in individual patients was assessed by determining the repeated measures correlation (z-rrm) between weighted L-ELWI and T-ELWI scores. The ability of both techniques to discriminate pulmonary oedema was compared by analysing the area under ROC curves.

Results:

Excellent inter-rater agreement for assigned L-ELWI scores was observed (linear weighted κ = 0.95 for both). Both techniques had a good agreement in classifying the severity of pulmonary oedema (linear weighted κ = 0.63, 95% CI 0.51–0.79). T-ELWI and weighted L-ELWI scores correlated strongly (z-rrm = 0.88, 95% CI 0.80–0.92, P < 0.0001). Both techniques had comparable ability to discriminate pulmonary oedema (difference in area under ROC curve = 0.0014, 95%CI –0.0027 to 0.0055, P = 0.5043).

Conclusion:

We found the utility of LUS as a reliable and reproducible technique for ELWI estimation and tracking its changes over time in CRS + HIPEC.