Leveraging the Science of Teamwork to Sustain Handoff Improvements in Cardiovascular Surgery.

BACKGROUND: Improving the reliability of handoffs and care transitions is an important goal for many health care organizations. Increasing evidence shows that human-centered design and improved teamwork can lead to sustainable care transition improvements and better patient outcomes. This study was conducted within a cardiovascular service line at an academic medical center that performs more than 600 surgical procedures annually. A handoff process previously implemented at the center was poorly adopted. This work aimed to improve cardiovascular handoffs by applying human factors and the science of teamwork. METHODS: The study's quality improvement method used Plan-Do-Study-Act cycles and participatory design and ergonomics to develop, implement, and assess a new handoff process and bundle. Trained observers analyzed video-recorded and live handoffs to assess teamwork, leadership, communication, coordination, cooperation, and sustainability of unit-defined handoff best practices. The intervention included a teamwork-focused redesign process and handoff bundle with supporting cognitive aids and assessment metrics. RESULTS: The study assessed 153 handoffs in multiple phases over 3 years (2016-2019). Quantitative and qualitative assessments of clinician (teamwork) and implementation outcomes were performed. Compared with the baseline, the observed handoffs demonstrated improved team leadership (p < 0.0001), communication (p < 0.0001), coordination (p = 0.0018), and cooperation (p = 0.007) following the deployment of the handoff bundle. Sustained improvements in fidelity to unit-defined handoff best practices continued 2.3 years post-deployment of the handoff bundle. CONCLUSION: Participatory design and ergonomics, combined with implementation and safety science principles, can provide an evidence-based approach for sustaining complex sociotechnical change and making handoffs more reliable.

Superficial vs. deep serratus anterior plane block for analgesia in patients undergoing mastectomy: A randomized prospective trial.

STUDY OBJECTIVE: In the initial description of the serratus anterior plane block (SAPB), both superficial and deep SAPB provided effective blockade. The purpose of this study was to investigate the difference in opioid consumption and postoperative analgesia between superficial and deep SAPB for patients undergoing mastectomy. DESIGN: Randomized prospective trial. SETTING: Academic hospital. PATIENTS: 64 women, >18 years of age, ASA I-III, undergoing single or bilateral mastectomy, with and without lymph node biopsy, with and without tissue expander reconstruction. INTERVENTION: Either superficial or deep SAPB by an ultrasound-guided technique in addition to multimodal analgesia. MEASUREMENTS: The primary outcome was opioid consumption in the first 24 h. Secondary outcomes were pain scores, satisfaction scores, incidence of PONV, length of stay and block performance time. RESULTS: Subjects who received a deep SAPB required 30% less oral morphine equivalents (OME) (113.5 mg vs. 147 mg, p = 0.009) and reported lower pain scores. There were no significant differences in satisfaction scores, incidence of PONV, LOS, or block performance time between the two groups. CONCLUSION: There was a significant difference in opioid consumption between the deep and superficial SAPB groups. Subjects in the deep SAPB group had lower pain scores at 12 h; however, the difference was not statistically significant at other time points. While both the superficial and the deep SAPB can be used for post-operative analgesia in patients undergoing mastectomy, our study suggests that the deep SAPB may improve analgesia to a greater degree than the superficial SAPB as shown through decreased opioid consumption of 30% over a 24-h period post-block. CLINICAL TRIAL NUMBER AND REGISTRY URL: clinicaltrials.gov: NCT03154658.

The Impact of Earplugs and Eye Masks on Sleep Quality in Surgical ICU Patients at Risk for Frequent Awakenings.

OBJECTIVES: Sleep disturbances may contribute to the development of delirium, prolonged ICU stay, and increased mortality. There is conflicting data on the effectiveness of earplugs and eye masks for sleep promotion in the ICU. This study evaluates the impact of earplugs and eye masks on sleep quality in postoperative surgical ICU patients at risk for frequent awakenings. DESIGN: Prospective randomized controlled trial. SETTING: Surgical ICU within the University of Texas Southwestern Medical Center. PATIENTS: Adult, female patients admitted to the surgical ICU requiring hourly postoperative assessments following breast free flap surgery between February 2018 and October 2019. INTERVENTIONS: Patients were randomized into an intervention group or a control group. The intervention group received earplugs and eye masks in addition to standard postoperative care, whereas the control group received standard postoperative care. MEASUREMENTS AND MAIN RESULTS: The primary outcome was overall sleep quality assessed via the Richards-Campbell Sleep Questionnaire. Secondary outcomes of patient satisfaction and rates of ICU delirium were assessed with a modified version of the Family Satisfaction in the ICU survey and the Confusion Assessment Method for the ICU. After a planned interim analysis, the study was stopped early because prespecified criteria for significance were attained. Compared with the control group's average Richards-Campbell Sleep Questionnaire total score of 47.3 (95% CI, 40.8-53.8), the intervention group's average Richards-Campbell Sleep Questionnaire total score was significantly higher at 64.5 (95% CI, 58.3-70.7; p = 0.0007). There were no significant between-group differences for Confusion Assessment Method for the ICU scores or modified Family Satisfaction in the ICU survey scores. CONCLUSIONS: These results suggest that earplugs and eye masks are effective in improving sleep quality in ICU patients undergoing frequent assessments. The results strengthen the evidence for nonpharmacologic sleep-promoting adjuncts in the ICU.

The impact of implementation of a hysterectomy enhanced recovery pathway on anesthetic medication costs.

Aim: To evaluate the effect of implementation of a hysterectomy Enhanced Recovery After Surgery (ERAS) protocol on perioperative anesthetic medication costs. Patients & methods: Historical cohort study of 84 adult patients who underwent a hysterectomy. Forty-two patients who underwent surgery before protocol implementation comprised the pre-ERAS group. Forty-two patients who underwent surgery after protocol implementation comprised the post-ERAS group. Data on anesthetic medication costs and outcomes were analyzed. Results: Compared with the pre-ERAS group, the post-ERAS group's total medication cost was significantly lower (median: 325.20 USD; interquartile range [IQR]: 256.12-430.65 USD vs median: 273.10 USD; IQR: 220.63-370.59 USD, median difference: -40.76, 95% CI: -130.39, 16.99, p = 0.047). Length of stay was significantly longer in pre-ERAS when compared with post-ERAS groups (median: 5.0 days; IQR: 4.0-7.0 days vs median: 3.0 days; IQR: 3.0-4.0 days, median difference: -2.0 days, 95% CI: -2.5581, -1.4419, p < 0.0001). Conclusion: ERAS protocols may reduce perioperative medication costs.

The effect of SANGUINATE® (PEGylated carboxyhemoglobin bovine) on cardiopulmonary bypass functionality using a bovine whole blood model of normovolemic hemodilution.

BACKGROUND: Cardiac surgery using cardiopulmonary bypass carries a high risk of bleeding and need for blood transfusion. Blood administration is associated with increased rates of morbidity and mortality. Perioperatively, strategies are often employed to reduce blood transfusions in high-risk patients or in situations where blood transfusion is contraindicated. Normovolemic hemodilution is a blood conservation technique used during cardiac surgery that involves replacement of blood with fluids. SANGUINATE® (PEGylated carboxyhemoglobin bovine) is a novel hemoglobin-based oxygen carrier that can deliver oxygen effectively to tissues in the presence of severe hypoxia. The use of a hemoglobin-based oxygen carrier during hemodilution may augment tissue oxygen delivery and reduce blood transfusion. METHODS: Six standardized cardiopulmonary bypass runs simulating normovolemic hemodilution using varying proportions of bovine whole blood and SANGUINATE were performed. Pump speed, flow rate, line pressures, hemoglobin concentration, oxygenation, and degree of anticoagulation were assessed at regular intervals. Membrane oxygenators and arterial line filters were inspected for evidence of clotting following each run. RESULTS: Increases in the pressure drop across the membrane oxygenator were detected during runs 5 and 6. Median activated clotting time values were able to be maintained at goal during the runs, and SANGUINATE did not appear to be thrombogenic. Hemoglobin concentration decreased following the addition of SANGUINATE. Oxygenation was maintained during all runs that included SANGUINATE. CONCLUSION: SANGUINATE does not impact the performance of the cardiopulmonary bypass circuit in a bovine whole blood model. The results support further evaluation of SANGUINATE in the setting of normovolemic hemodilution and cardiopulmonary bypass.

Risk factors for deep sternal wound infection after cardiac surgery: Influence of red blood cell transfusions and chronic infection.

BACKGROUND: Deep sternal wound infection (DSWI) following cardiac surgery is a serious complication, but risk factors associated with DSWI have not been fully elucidated. METHODS: We analyzed all DSWI cases at our institution from 2010-2013 in adult cardiac median sternotomy cases, based on Society of Thoracic Surgeons or National Healthcare Safety Network definitions, but with 1-year surveillance postsurgery. Controls were matched 3:1 per case for procedure, age, and year of surgery. Demographic and operative data were pulled from Society of Thoracic Surgeons database and chart review. Potential variables were evaluated using univariate and multivariate conditional logistic regression. RESULTS: Out of 1,894 surgeries performed, 39 DSWI cases (2%) and 117 controls were identified. In univariate analyses, patients with red blood cell (RBC) transfusion ≥ 4 units, any platelet transfusion, previous infections, and chronic infections were associated with higher DSWI. RBC transfusion ≥ 4 units (P = .037) and chronic infections (P = .029) remained significant risk factors for DSWI in multivariate analysis. Preoperative anemia alone was not associated with more DSWI, but its interaction with RBC transfusion ≥ 4 units was significant. CONCLUSIONS: High-volume RBC transfusions and chronic infections were strongly associated with DSWI in our population and represent potentially modifiable areas for improvement.

Detergent screening of the human voltage-gated proton channel using fluorescence-detection size-exclusion chromatography.

The human voltage-gated proton channel (Hv1) is a membrane protein consisting of four transmembrane domains and intracellular amino- and carboxy-termini. The protein is activated by membrane depolarization, similar to other voltage-sensitive proteins. However, the Hv1 proton channel lacks a traditional ion pore. The human Hv1 proton channel has been implicated in mediating sperm capacitance, stroke, and most recently as a biomarker/mediator of cancer metastasis. Recently, the three-dimensional structures for homologues of this voltage-gated proton channel were reported. However, it is not clear what artificial environment is needed to facilitate the isolation and purification of the human Hv1 proton channel for structural study. In the present study, we generated a chimeric protein that placed an enhanced green fluorescent protein (EGFP) to the amino-terminus of the human Hv1 proton channel (termed EGFP-Hv1). The chimeric protein was expressed in a baculovirus expression system using Sf9 cells and subjected to detergent screening using fluorescence-detection size-exclusion chromatography. The EGFP-Hv1 proton channel can be solubilized in the zwitterionic detergent Anzergent 3-12 and the nonionic n-dodecyl-ß-d-maltoside (DDM) with little protein aggregation and a prominent monomeric protein peak at 48 h postinfection. Furthermore, we demonstrate that the chimeric protein exhibits a monomeric protein peak, which is distinguishable from protein aggregates, at the final size-exclusion chromatography purification step. Taken together, we can conclude that solubilization in DDM will provide a useable final product for further structural characterization of the full-length human Hv1 proton channel.