Cardiac reoperation in the intensive care unit

Simulation Training for Emergency Sternotomy in the Cardiovascular Intensive Care Unit

BACKGROUND

Emergency resternotomy in the intensive care unit for a patient who has undergone cardiac surgery can be daunting for surgeons and critical care staff. Clinicians involved are often unfamiliar with the surgical instruments and techniques needed.

LOCAL PROBLEM

After an emergency intensive care unit resternotomy resulted in suboptimal performance and outcome, protocols for emergency resternotomy were established and improved.

METHODS

Education and simulation training were used to improve staff comfort and familiarity with the needed techniques and supplies. The training intervention included simulations to provide hands-on experience, improve staff familiarity with resternotomy trays, and streamline emergency sternotomy protocols. Preintervention and postintervention surveys were used to assess participants' familiarity with the implemented plans and algorithms.

RESULTS

All 44 participants (100%) completed the preintervention survey, and 41 of 44 participants (93%) returned the postintervention survey. After the intervention, 95% of respondents agreed that they were prepared to be members of the team for an emergency intensive care unit sternotomy, compared with 52% of respondents before the intervention. After the intervention, 95% of respondents strongly agreed or agreed that they could identify patients who might need emergency sternotomy, compared with 50% before the intervention. The results also showed improvement in staff members' understanding of team roles, activation and use of the emergency sternotomy protocol, and differences between guidelines for resuscitating patients who experience cardiac arrest after cardiac surgery and the post-cardiac arrest Advanced Cardiovascular Life Support protocol.

CONCLUSION

Results of this quality improvement project suggest that simulation training improves staff comfort with and understanding of emergency resternotomy.

Impact of Bedside Re-Explorations in a Cardiovascular Surgery Intensive Care Unit Led by Surgeons

Surgical re-explorations represent 3-5% of all cardiac surgery. Concerns regarding mortality and major morbidity of re-explorations in the intensive care unit (ICU) setting exist. We sought to investigate whether they may have different outcomes compared with those performed in the operating room (OR). Single center retrospective review of patients who underwent mediastinal re-exploration in the ICU or in the OR after cardiac surgery. Mediastinal re-explorations were also classified as: "planned" and "unplanned". Primary outcome was 30-day mortality, secondary outcomes include deep sternal wound infection (DSWI), sepsis, ICU and hospital length of stay, prolonged intubation (>72 h), tracheostomy, pneumonia, acute kidney injury requiring dialysis and stroke. Between 2010 and 2019, 195 of 7263 patients (2.7%) underwent mediastinal re-exploration after cardiac surgery. More patients in the ICU group experienced two or more re-explorations (30.3% vs. 2.3%, p < 0.001), a higher incidence of postoperative pneumonia (22% vs. 7%, p = 0.004), prolonged intubation (46.8% vs. 19.8%, p < 0.001) and longer hospital stay (30.3 ± 34.2 vs. 20.8 ± 18.3 days, p = 0.014). There were no differences in mortality between ICU and OR (16.5% vs. 13.9%, p = 0.24) nor in sepsis (14.7% vs. 7%, p = 0.91) and DSWI rates (1.8% vs. 1.2%, p = 0.14). Re-explorations in the ICU were not associated with increased mortality, sepsis and mediastinitis rate.

[Surgery in the Cardiovascular Surgical Intensive Care Unit]

BACKGROUND

To analyze the indications, actions and results of the operations performed in the Cardiovascular Surgery Intensive Care Unit.

METHODS

Retrospective analysis of consecutive non-selected adult patients operated in the ICU. All operations were included. Descriptive statistics were used.

RESULTS

Between 2008 and 2013, 3379 consecutive adult patients were operated upon. A total of 124 operations were performed in the ICU in 109 patients, 70 male (64.2%) and 39 female (35.8%) with a mean age of 61.6 years (12-80). This represented 3.2% of all operations. During the study period, 185 patients (5.5%) were reoperated for postoperative bleeding/tamponade in the operating room. The index interventions were for valvular heart disease (34.9%), aortic disease (22.9%), ischemic heart disease (15.6%), combined valvular/ischemic (12%), valvular/aorta (11%) and miscellaneous (3.6%). The indications for reoperation were persistent bleeding 54 (43.5%), pericardial tamponade 41 (33%), low cardiac output 13 (10.5%), cardiac arrest/arrhythmia 8 (6.5%), respiratory insufficiency 6 (4.8%) and acute ischemic limb 2 (1.7%). Operations performed were: mediastinal exploration 73 (58.9%), implant/removal of ECMO 17 (13.7%), sternal closure 16 (12.9%), open resuscitation 9 (7.3%), subxyphoid drainage 7 (5.6%) and femoral embolectomy 2 (1.6%). Overall mortality was 33%. There was one case of mediastinitis (0,9%), with no difference from patients operated in the regular operating room.

CONCLUSIONS

Operations in the ICU represent a safe, life-saving alternative in specific subgroups of patients. The risk of wound infection is not increased, unstable patients are not transferred and there is time savings.

Simulation trainer for practicing emergent open thoracotomy procedures

BACKGROUND

An emergent open thoracotomy (OT) is a high-risk, low-frequency procedure uniquely suited for simulation training. We developed a cost-effective Cardiothoracic (CT) Surgery trainer and assessed its potential for improving technical and interprofessional skills during an emergent simulated OT.

MATERIALS AND METHODS

We modified a commercially available mannequin torso with artificial tissue models to create a custom CT Surgery trainer. The trainer's feasibility for simulating emergent OT was tested using a multidisciplinary CT team in three consecutive in situ simulations. Five discretely observable milestones were identified as requisite steps in carrying out an emergent OT; namely (1) diagnosis and declaration of a code situation, (2) arrival of the code cart, (3) arrival of the thoracotomy tray, (4) initiation of the thoracotomy incision, and (5) defibrillation of a simulated heart. The time required for a team to achieve each discrete step was measured by an independent observer over the course of each OT simulation trial and compared.

RESULTS

Over the course of the three OT simulation trials conducted in the coronary care unit, there was an average reduction of 29.5% (P < 0.05) in the times required to achieve the five critical milestones. The time required to complete the whole OT procedure improved by 7 min and 31 s from the initial to the final trial-an overall improvement of 40%.

CONCLUSIONS

In our preliminary evaluation, the CT Surgery trainer appears to be useful for improving team performance during a simulated emergent bedside OT in the coronary care unit.

Mediastinal Exploration in the Surgical Intensive Care Unit

A continuing education program was developed after a need was identified within the surgical intensive care unit (SICU) for critical care nurses to be able to assist the cardiothoracic surgeon in performing an emergent mediastinal reexploration in the postcardiac surgical patient when an operating room team was unavailable. The program is targeted for SICU nurses experienced in caring for these patients.