Comparison of atriocaval shunting with perihepatic packing versus perihepatic packing alone for retrohepatic vena cava injuries in a swine model.

BACKGROUND: Retrohepatic vena cava (RVC) injuries are technically challenging and often lethal. Atriocaval shunting has been promoted as a modality to control haemorrhage from these injuries, but evidence from controlled studies supporting its benefit is lacking. We hypothesised that addition of an atriocaval shunt to perihepatic packing would improve outcomes in our penetrating RVC injury swine model. METHODS: After a survivable atriocaval shunting model was refined in 4 swine without an injury, 13 additional female Yorkshire swine were randomised into either perihepatic packing and atriocaval shunt (PPAS, n=7) or perihepatic packing alone (PP, n=6) treatment arms prior to creating a standardised, 1.5 cm stab wound to the RVC. Haemodynamic parameters, intravenous fluid, and blood loss were recorded until mortality or euthanisation after 4h. Statistical tests used to test differences include the Wilcoxon rank sums test, Fisher exact test and analysis of covariance. A p-value ≤0.05 was considered statistically significant. RESULTS: Immediately before and after RVC injury, no difference in temperature, cardiac output, heart rate, mean arterial pressure or mean pulmonary artery pressure was detected (all p>0.05) between the two groups. While the RVC injury did affect measures parameters in PPAS swine over time, haemodynamic compromise and blood loss were not significantly greater in PPAS than PP swine. Survival time was significantly different with all PPAS swine dying within 2h (mean survival duration 39 (SD 58)min) while all 6 PP swine survived the entire 4h study period. CONCLUSIONS: While perihepatic packing alone slowed haemorrhage to survivable rates during the 4h study period, atriocaval shunt placement led to rapid physiologic decline and death in our standardised, penetrating RVC model.

Simulation-based education with deliberate practice may improve intraoperative handoff skills: a pilot study.

STUDY OBJECTIVE: To examine the results of simulation-based education with deliberate practice on the acquisition of handoff skills by studying resident intraoperative handoff communication performances. DESIGN: Preinvention and postintervention pilot study. SETTING: Simulated operating room of a university-affiliated hospital. MEASUREMENTS: Resident handoff performances during 27 encounters simulating elective surgery were studied. Ten residents (CA-1, CA-2, and CA-3) participated in a one-day simulation-based handoff course. Each resident repeated simulated handoffs to deliberately practice with an intraoperative handoff checklist. One year later, 7 of the 10 residents participated in simulated intraoperative handoffs. All handoffs were videotaped and later scored for accuracy by trained raters. A handoff assessment tool was used to characterize the type and frequency of communication failures. The percentage of handoff errors and omissions were compared before simulation and postsimulation-based education with deliberate practice and at one year following the course. MAIN RESULTS: Initially, the overall communication failure rate, defined as the percentage of handoff omissions plus errors, was 29.7%. After deliberate practice with the intraoperative handoff checklist, the communication failure rate decreased to 16.8%, and decreased further to 13.2% one year after the course. CONCLUSIONS: Simulation-based education using deliberate practice may result in improved intraoperative handoff communication and retention of skills at one year.

Isolated perioperative hypertension: clinical implications & contemporary treatment strategies.

Perioperative hypertension has been shown to be a risk factor for the development of perioperative morbidity and mortality. The time spent outside acceptable blood pressure ranges, in a state of hypertension or hypotension, is correlated with the incidence of stroke, acute coronary syndrome, renal dysfunction, and death. The ideal perioperative treatment of hypertension would include an easily titratable agent, with fast onset and offset and minimal side effects. Several medication classes are routinely used in the operating room, including, but not limited to, beta-blockers, calcium channel blockers, nitrates, and angiotensin-converting enzyme (ACE) inhibitors.Proper treatment of chronic hypertension and continuation of chronic anti-hypertensive medications in the perioperative period has been demonstrated to improve patient outcomes. This review article will outline the importance of perioperative blood pressure management, the treatment pitfalls, and the novel medications being used in the perioperative setting.

Using Simulation Education With Deliberate Practice to Teach Leadership and Resource Management Skills to Senior Resident Code Leaders.

BACKGROUND: Cardiopulmonary arrests are rare, high-stakes events that benefit from using crisis resource management (CRM). Simulation-based education with deliberate practice can promote skill acquisition. OBJECTIVE: We assessed whether using simulation-based education to teach CRM would lead to improved performance, compared to a lecture format. METHODS: We tested third-year internal medicine residents in simulated code scenarios. Participants were randomly assigned to simulation-based education with deliberate practice (SIM) group or lecture (LEC) group. We created a checklist of CRM critical actions (which includes announcing the diagnosis, asking for help/suggestions, and assigning tasks), and reviewed videotaped performances, using a checklist of skills and communications patterns to identify CRM skills and communication efforts. Subjects were tested in simulated code scenarios 6 months after the initial assessment. RESULTS: At baseline, all 52 subjects recognized distress, and 92% (48 of 52) called for help. Seventy-eight percent (41 of 52) did not succeed in resuscitating the simulated patient or demonstrate the CRM skills. After intervention, both groups (n  =  26 per group) improved. All SIM subjects announced the diagnosis compared to 65% LEC subjects (17 of 26, P  =  .01); 77% (20 of 26) SIM and 19% (5 of 26) LEC subjects asked for suggestions (P < .001); and 100% (26 of 26) SIM and 27% (7 of 26) LEC subjects assigned tasks (P < .001). CONCLUSIONS: The SIM intervention resulted in significantly improved team communication and cardiopulmonary arrest management. During debriefing, participants acknowledged the benefit of the SIM sessions.