Enhanced recovery in major colorectal surgery: safety and efficacy in an unselected surgical population at a UK district general hospital.

BACKGROUND: Enhanced Recovery Programmes (ERPs) have been shown to benefit recovery following major surgery in selected centres and patient groups, but their wider applicability requires continued evaluation. The aims of this study were to assess the outcomes of the first 400 consecutive, non-selected patients, undergoing major elective colorectal surgery within an Enhanced Recovery programme at a UK District General hospital and to examine the effects of patient risk factors and operative approach on outcomes. METHODS: Since September 2005 all patients undergoing major elective colon and rectal surgery at our hospital have been treated within an ERP and their data recorded prospectively on a database. Safety and efficacy outcomes for the first 400 patients were compared using SPSS v14.0 with both a retrospective, pre-ERP group; and according to patient risk factors and operative approaches. RESULTS: Median length of stays (LOS) reduced from 9 days (IQR 7-11) to 6 days (IQR 5-10) after introduction of the ERP (p < 0.001). No statistically significant differences in LOS were observed between elderly (≥80 years) and younger patients or between different BMI groups. American Society of Anesthesiologists (ASA) grade 3 patients demonstrated significantly longer median LOS than those with ASA grades 1 and 2. Patients undergoing laparoscopic surgery had median LOS of 6 days (IQR 4-8) compared to 7 days (IQR 5-10) for open procedures (p < 0.001). No differences in morbidity or mortality were observed between the groups. CONCLUSIONS: Unselected application of an ERP in our unit has been associated with reductions in post-operative LOS. The ERP was safe and effective when applied to all our study patients independent of age and BMI. Despite LOS being longer in ASA grade 3 patients, application of the ERP to this higher risk group was not associated with significantly increased morbidity or mortality. Laparoscopic surgery resulted in additional modest reductions in LOS compared to open surgery within the ERP.

Gaze training enhances laparoscopic technical skill acquisition and multi-tasking performance: a randomized, controlled study.

BACKGROUND: The operating room environment is replete with stressors and distractions that increase the attention demands of what are already complex psychomotor procedures. Contemporary research in other fields (e.g., sport) has revealed that gaze training interventions may support the development of robust movement skills. This current study was designed to examine the utility of gaze training for technical laparoscopic skills and to test performance under multitasking conditions. METHODS: Thirty medical trainees with no laparoscopic experience were divided randomly into one of three treatment groups: gaze trained (GAZE), movement trained (MOVE), and discovery learning/control (DISCOVERY). Participants were fitted with a Mobile Eye gaze registration system, which measures eye-line of gaze at 25 Hz. Training consisted of ten repetitions of the "eye-hand coordination" task from the LAP Mentor VR laparoscopic surgical simulator while receiving instruction and video feedback (specific to each treatment condition). After training, all participants completed a control test (designed to assess learning) and a multitasking transfer test, in which they completed the procedure while performing a concurrent tone counting task. RESULTS: Not only did the GAZE group learn more quickly than the MOVE and DISCOVERY groups (faster completion times in the control test), but the performance difference was even more pronounced when multitasking. Differences in gaze control (target locking fixations), rather than tool movement measures (tool path length), underpinned this performance advantage for GAZE training. CONCLUSIONS: These results suggest that although the GAZE intervention focused on training gaze behavior only, there were indirect benefits for movement behaviors and performance efficiency. Additionally, focusing on a single external target when learning, rather than on complex movement patterns, may have freed-up attentional resources that could be applied to concurrent cognitive tasks.

Perceptual impairment and psychomotor control in virtual laparoscopic surgery.

BACKGROUND: It is recognised that one of the major difficulties in performing laparoscopic surgery is the translation of two-dimensional video image information to a three-dimensional working area. However, research has tended to ignore the gaze and eye-hand coordination strategies employed by laparoscopic surgeons as they attempt to overcome these perceptual constraints. This study sought to examine if measures related to tool movements, gaze strategy, and eye-hand coordination (the quiet eye) differentiate between experienced and novice operators performing a two-handed manoeuvres task on a virtual reality laparoscopic surgical simulator (LAP Mentor™). METHODS: Twenty-five right-handed surgeons were categorised as being either experienced (having led more than 60 laparoscopic procedures) or novice (having performed fewer than 10 procedures) operators. The 10 experienced and 15 novice surgeons completed the "two-hand manoeuvres" task from the LAP Mentor basic skills learning environment while wearing a gaze registration system. Performance, movement, gaze, and eye-hand coordination parameters were recorded and compared between groups. RESULTS: The experienced surgeons completed the task significantly more quickly than the novices, used significantly fewer movements, and displayed shorter tool paths. Gaze analyses revealed that experienced surgeons spent significantly more time fixating the target locations than novices, who split their time between focusing on the targets and tracking the tools. A more detailed analysis of a difficult subcomponent of the task revealed that experienced operators used a significantly longer aiming fixation (the quiet eye period) to guide precision grasping movements and hence needed fewer grasp attempts. CONCLUSION: The findings of the study provide further support for the utility of examining strategic gaze behaviour and eye-hand coordination measures to help further our understanding of how experienced surgeons attempt to overcome the perceptual difficulties inherent in the laparoscopic environment.

Psychomotor control in a virtual laparoscopic surgery training environment: gaze control parameters differentiate novices from experts.

BACKGROUND: Surgical simulation is increasingly used to facilitate the adoption of technical skills during surgical training. This study sought to determine if gaze control parameters could differentiate between the visual control of experienced and novice operators performing an eye-hand coordination task on a virtual reality laparoscopic surgical simulator (LAP Mentor™). Typically adopted hand movement metrics reflect only one half of the eye-hand coordination relationship; therefore, little is known about how hand movements are guided and controlled by vision. METHODS: A total of 14 right-handed surgeons were categorised as being either experienced (having led more than 70 laparoscopic procedures) or novice (having performed fewer than 10 procedures) operators. The eight experienced and six novice surgeons completed the eye-hand coordination task from the LAP Mentor basic skills package while wearing a gaze registration system. A variety of performance, movement, and gaze parameters were recorded and compared between groups. RESULTS: The experienced surgeons completed the task significantly more quickly than the novices, but only the economy of movement of the left tool differentiated skill level from the LAP Mentor parameters. Gaze analyses revealed that experienced surgeons spent significantly more time fixating the target locations than novices, who split their time between focusing on the targets and tracking the tools. CONCLUSION: The findings of the study provide support for the utility of assessing strategic gaze behaviour to better understand the way in which surgeons utilise visual information to plan and control tool movements in a virtual reality laparoscopic environment. It is hoped that by better understanding the limitations of the psychomotor system, effective gaze training programs may be developed.

Patient attitudes to the Internet and analysis of the potential role of a dedicated colorectal website -a prospective study.

BACKGROUND: The Internet has become an easily accessible source of information for patients and professionals alike. The purpose of this study were to: (i) analyse the attitudes of colorectal outpatients with regards the establishment of a dedicated, local colorectal website; and (ii) 'market research' the desired contents of such a site. METHODS: During a 4-week period, questionnaires were circulated among patients attending colorectal out-patient clinics in order to establish basic demographic data, Internet usage and investigate those areas of information that would be of interest. RESULTS: Over the study period, 118 replies were received from 538 patients; 49 males (40.6%), 58 females (50.8%) and 11 unspecified gender (8.4%). The age of respondents conformed to a normal distribution, centred on the 61-70-year-old age group. Of all respondents, 38 patients (32%) used the Internet for general purposes. Nine (8% of all respondents, 23% of those with Internet access) had searched for information regarding their clinical problem. Forty-one patients (35% of those with access) indicated that they would use such a website, should one become available. CONCLUSION: Although Internet usage was relatively low amongst our patients and there was less interest in a potential website than has been noted in previous studies, we were able to identify a group of patients for whom the provision of a dedicated colorectal website would be of benefit and whose information requirements could easily be met within a website format.