OBJECTIVE: Cardiac injury during the Nuss procedure is a rare risk that can lead to a catastrophic outcome. The specific aim of this pilot study was to evaluate the safety and efficacy of simultaneous bilateral thoracoscopy (SBT) compared to standard unilateral right thoracoscopy (RT) in children undergoing the Nuss procedure in order to mitigate that risk.
METHODS: IRB approval was obtained to analyze data on children who underwent SBT and RT during the Nuss procedure. Data retrieval included age, gender, Haller index (HI), operative time (OT), length of stay (LOS), complications and follow up.
RESULTS: From August 2022 to August 2023, 10 children who underwent SBT were compared to 10 children who underwent RT. Both groups underwent intercostal nerve cryoablation. Following completion of cryoablation, SBT or RT was carried out during the Nuss procedure. SBT allowed for the tip of the bar passer to be visualized during the entire dissection in both thoraces. There was no significant difference in either group with respect to age, HI, OT, LOS. There were no anesthetic or surgical complications in either group.
CONCLUSIONS: We found that SBT is safe, effective and allows for 100% visualization of the tip of the bar passer during the entire critical phase of the Nuss procedure. It does not impact OT or LOS compared to children who underwent only RT. SBT may benefit children who undergo the Nuss procedure by reducing the risk of cardiac injury.
METHODS: Original Research Retrospective Case-control study.

Pectus excavatum presents challenges in cardiac operations due to anatomical abnormalities and limited exposure. We report a case of a 58-year-old male with severe pectus excavatum and significant mitral regurgitation successfully treated with minimally invasive mitral valve repair. Preoperative imaging revealed leftward heart displacement and a Haller index of 3.8. Surgical intervention involved adaptations in atrial retraction and valve repair technique. Postoperative outcomes were favourable, with normal mitral function and a short hospital stay. Despite technical challenges, minimally invasive approaches offer benefits in pectus excavatum patients. This case underscores the feasibility and safety of minimally invasive surgery in patients with extensive pectus excavatum, emphasizing its potential as a preferred approach.

BACKGROUND: Heart transplantation in patients with situs inversus is challenging, especially in terms of reconstruction of the systemic venous return. Several rerouting techniques have been presented but are associated with vulnerability to external compression, which might cause hemodynamic instability, especially in the presence of chest deformity. In this study, we report a rare case of successful heart transplantation in the presence of situs inversus and pectus excavatum.
METHODS: A 55-year-old man, with a history of surgeries for corrected transposition of the great arteries with ventricular septal defect, was registered for heart transplantation owing to progression of heart failure. Subsequently, he had undergone a left ventricular assist device implantation; 14 years after registration, he underwent transplantation of the heart with normal anatomy. The inferior vena cava was reconstructed by anastomosing the left atria with a counterclockwise rotation of the donor heart and by lengthening the recipient inferior vena cava with a conduit made of the residual right atrial tissue. The superior vena cava was reconstructed using a donor innominate vein harvested with sufficient length. After successful weaning from cardiopulmonary bypass, the chest could not be closed because the heart was compressed owing to chest deformity, resulting in hemodynamic instability. Therefore, to exclude the left lung, a left pericardial screen was created using a bovine pericardium, allowing the chest to be closed with acceptable hemodynamics. The patient suffered postoperatively from a higher venous pressure, suggesting an obstruction of venous return early after surgery. The obstruction gradually resolved, and the patient was transferred for rehabilitation.
CONCLUSIONS: Heart transplantation in the presence of situs inversus is challenging; moreover, the presence of pectus excavatum further complicates the procedure. The paradoxically larger left lung and chest deformity compressed and impaired reconstructed systemic venous return. Although intrathoracic exclusion of the left lung was effective, an intraoperative or early postoperative thoracoplasty for pectus excavatum was also a viable option. Patient-specific management is mandatory, depending on the anatomy.

BACKGROUND: To minimize unused outpatient opioids while providing adequate pain control, we sought to create a model to predict outpatient opioid use following the minimally invasive repair of pectus excavatum with cryoablation MIRPE-C.
METHODS: A retrospective review was conducted at a single center from May 2023 to January 2024 among patients <21 years who underwent MIPRE-C. Demographic and clinical data, including inpatient and outpatient opioid use were reviewed. Patients completed opioid use questionnaires at their first postoperative visit. Simple linear regression was employed to create a model for outpatient opioid use.
RESULTS: Sixty-eight patients underwent MIRPE-C: 84% were male (mean age of 15.2 ± 1.7 years, and median Haller index 4.2[IQR:3.7-5.7]). Daily mean inpatient opioid requirement and daily opioid doses were 0.3 ± 0.2 OME/day/kg and 2 ± 1.2 opioid doses/day. At the first outpatient follow-up visit, patients reported using a median of five 5-mg oxycodone tablets [IQR:1.6-10] for 5 days [IQR:2-7] with 22% of patients needing an opioid refill. On linear regression, inpatient opioid use had a significant relationship with the number of outpatient doses taken, while patient factors were not associated with outpatient opioid use. A simple equation for predicting opioid need based on best fit (R2 = 0.211) was developed: #OUTPATIENT OPIOID TABLETS = 3 TABLETS + (0.82 x #INPATIENT OPIOID RECIEVED).
CONCLUSIONS: The proposed outpatient opioid prescription model is simple to calculate and tailors the prescription to individual patient need. This model has the potential to provide effective pain control and avoid prescription refills, while minimizing over-prescription of opioids.
METHODS: Treatment study Level III.

BACKGROUND: Patients with pectus excavatum (PE) often undergo cross-sectional imaging (CSI) to quantify severity for insurance authorization before surgical repair. The modified percent depth (MPD), an external caliper-based metric, was previously validated to be similar to the pectus index and correction index. This study explored family perceptions of CSI and MPD with respect to value and costs.
METHODS: This is a cross-sectional survey study including families of patients enrolled in an ongoing prospective multicenter study evaluating the use of MPD as an alternative to CSI for quantifying PE severity. Families of PE patients who underwent both MPD and CSI completed a survey to determine their perceptions of MPD and costs of CSI. Responses were described and associations were evaluated using chi squared, Wilcoxon rank-sum test and logistic regression as appropriate. Statistical significance was set to 0.05.
RESULTS: There were 136 surveys completed for a response rate of 88%. Respondents were confident in MPD (86%) and confident in its similarity to CSI (76%). Families of females were less confident in the measurements than males (55% versus 80%, P = 0.02; odds ratio 0.30 (0.11, 0.83). Obtaining CSI required time off work/school in 90% and a copay in 60%. Nearly half (49%) of respondents reported CSI was a time/financial hardship. Increasing copay led to decreased reassurance in CSI (55%: copay > $100 versus 77%: lower copay/75%: no copay; P = 0.04).
CONCLUSIONS: From the family perspective, MPD is valuable in assessing the severity of PE. Obtaining CSI was financially burdensome, particularly for those with higher copays. MPD measurements provide high value at low cost in assessing the severity of PE.

OBJECTIVE: The current standard method for pectus excavatum (PE) repair is the Nuss procedure. One major postoperative complication is the displacement of the implanted metal bar, which is used to remodel the chest wall. Blocking the possible ways that the bar can be displaced with the use of stabilizers and peri/intracostal sutures has reduced the incidence of bar displacement. Despite the modifications, bar dislocation is often reported. We adopted the medial position stabilizer placement method and imposed no postoperative restrictions. In this study, we analyzed the bar dislocation rate with this modification and concurrent postoperative full activity.
METHODS: Nuss procedure modification where stabilizers are placed bilaterally in the medial location was done on patients irrespective of age and Haller index greater than 3.25. A single bar was used for all patients. Cryoanalgesia was performed on every patient. No postoperative restrictions were imposed on the patients. Full immediate activities, including sports, were allowed.
RESULTS: 114 patients (103 male, 11 female) were analyzed from 2016 to 2023. The median age was 15 years old. There was zero incidence of bar displacement. The combined incidence of other postoperative complications was 4%: 2 wound infections and 2 hematoma formations, both needing incision and drainage.
CONCLUSIONS: Bilateral medial stabilizer placement resulted in no incidence of bar dislocation. Return to immediate full activities after the Nuss procedure did not appear to increase the incidence of bar displacement if stabilizers were placed medially.

BACKGROUND: The Nuss procedure is the primary treatment for pectus excavatum (PE), but patient expectations are not always met. In our unit, our standard approach in the last few years has been the routine application of two bars instead of one. We aimed to retrospectively assess the impact of this approach on patient satisfaction, quality of life (QoL) and safety.
METHODS: A retrospective study included 182 patients over 16 years old who underwent the Nuss procedure for PE between January 2007 and September 2021. Patients were categorized into one-bar or two-bar correction groups. Propensity score matching (PSM) was used, resulting in 30 patients in each group. Primary endpoints were QoL and cosmetic satisfaction, while secondary endpoints included complications and recurrence.
RESULTS: After PSM, both groups showed similar general characteristics. Patients treated with two bars reported fewer psychological complaints post-surgery (93.3% vs. 73.3%, p = 0.031). There were no significant differences in QoL improvement (96.7% in both groups, p = 0.197), perioperative complications (p = 0.771) or recurrence (one patient in the one-bar group, p = 1.000).
CONCLUSIONS: Our study reveals that patients undergoing the Nuss Procedure for PE with two bars exhibit comparable clinical outcomes and QoL to those with one bar. However, patients with two bars may have higher levels of psychological well-being and satisfaction, indicating potential benefits associated with this approach. These findings suggest potential advantages of the two-bar approach, but further research with larger sample sizes is warranted to confirm these observations.

BACKGROUND: The Nuss procedure for pectus excavatum is associated with prolonged hospitalizations due to pain. We evaluated implementation of intercostal nerve cryoablation and enhanced recovery after surgery (ERAS) protocols on outcomes of Nuss procedures performed over six years at a single institution.
METHODS: This retrospective cohort study included patients who underwent Nuss procedure from 10/2017 to 09/2023. Patients received epidurals prior to 06/2019, cryoablation from 06/2019 to 07/2021, and ERAS with cryoablation and intraoperative methadone administration after 07/2021. We used multivariable linear regression to evaluate length of stay (LOS), inpatient morphine milligram equivalents (MMEs), and discharge opioids. We assessed the balancing measures of operative time, postoperative pain scores, and complications.
RESULTS: We identified 62 patients; 15 who received epidurals, 18 cryoablation, and 29 cryoablation with ERAS. Cryoablation was associated with a 62.3% (p < 0.001) decrease in length of stay, an 86.6% (p < 0.001) decrease in inpatient MMEs, and a 72.9% (p < 0.001) decrease in discharge opioids. Cryoablation was additionally associated with 24.5% (p = 0.02) longer operative times and 46.4% (p = 0.04) higher postoperative day one pain scores. Subsequent implementation of an ERAS protocol was associated with a further 82.8% (p = 0.04) decrease in discharge opioids and a 25.0% (p = 0.04) decrease in postoperative day one pain scores.
CONCLUSIONS: Over six years of quality improvement efforts, we found the implementation of cryoablation and ERAS protocols to be associated with a significant decrease in length of stay and opioid exposures. Protocolized pain management and cryoablation may work synergistically to improve outcomes without compromising patient experience.
METHODS: Level III - Retrospective comparative study.

UNASSIGNED: Right ventricular failure (RVF) is a significant cause of morbidity and mortality in patients with a left ventricular assist device (LVAD). This study is aimed to investigate the influence of a pectus excavatum on early and late outcomes, specifically RVF, following LVAD implantation.
UNASSIGNED: A retrospective study was performed, that included patients with a HeartMate 3 LVAD at our tertiary referral center. The Haller index (HI) was calculated using computed tomography (CT) scan to evaluate the chest-wall dimensions.
UNASSIGNED: In total, 80 patients (median age 57 years) were included. Two cohorts were identified: 28 patients (35%) with a normal chest wall (HI < 2.0) and 52 patients (65%) with pectus excavatum (HI 2.0-3.2), with a mean follow-up time of 28 months. Early ( ≤ 30 days) RVF and early acute kidney injury events did not differ between cohorts. Overall survival did not differ between cohorts with a hazard ratio (HR) of 0.47 (95% confidence interval (CI): 0.19-1.19, p = 0.113). Late ( > 30 days) recurrent readmission for RVF occurred more often in patients with pectus excavatum (p = 0.008). The onset of late RVF started around 18 months after implantation and increased thereafter in the overall study cohort.
UNASSIGNED: Pectus excavatum is observed frequently in patients with a LVAD implantation. These patients have an increased rate of readmissions and late RVF. Further investigation is required to explore the extent and severity of chest-wall abnormalities on the risk of RVF.

A 13-year-old male patient with marfanoid features and pectus excavatum with Haller index 4 and correction index of 38% underwent the Nuss procedure with cryoanalgesia 9 days prior, which transpired uneventfully. Preoperative spirometry was normal, and echocardiogram showed light aortic valve dilation. A month later, during a routine outpatient checkup, he referred middle abdominal pain, denying respiratory symptoms nor thoracic pain. He presented bilateral apical and right basal hypophonesis. Chest X-ray revealed bilateral pneumothorax and right pleural effusion. Consequently, the patient was admitted to the emergency room, and a chest computed tomography was ordered, reporting right apical blebs. Bilateral thoracoscopy was performed, and apexes were checked for pulmonary blebs to rule out primary pneumothorax. In the right chest, a wedge resection of a distorted area on the apex and pleuroabrasion were done. Four air leaking eschars were found when performing lung expansion under water as leaking test, corresponding to cryoanalgesia intercostal eschars, and subsequently closed by primary suture. In the left chest, there were no blebs. However, another four pleural lesions with intact pleura in the left lower lobe were also found. Postoperative course was uneventful and chest drains were removed 48 hours after surgery. He remains asymptomatic 21 months after discharge. Cryoanalgesia in pectus excavatum is spreading due to the improvement in postoperative pain control. However, some complications may occur.