A recent Cardiothoracic Surgery digest,
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Study Type: Systematic review with case series (3 institutional cases plus PROSPERO-registered review).

Key Question: Is there an association between prior vascular reconstruction procedures and subsequent development of angiosarcoma?

Key Findings:

• 49 total cases analysed (46 from literature + 3 new): 27 endovascular prostheses, 14 open prosthetic/mixed grafts, 8 autologous-vein bypass.
• Mean diagnostic latency 7 years (range 5 months–18 years); mean age 70.5 years; only 12.2% female.
• First reported case of intraluminal EVAR-limb angiosarcoma presenting with distal embolisation.

Clinical Relevance: UK vascular and cardiothoracic surgeons should maintain a high index of suspicion for angiosarcoma in atypical, refractory, or late post-procedural presentations following any vascular reconstruction, including EVAR, given increasing use of these techniques in NHS practice and the diagnostic delay observed.

Limitations: Findings are based on heterogeneous case reports and a small cohort, precluding determination of causality or true incidence.

Study Type: Retrospective cohort study (single institution, 2010–2024)

Key Question: What are the long-term survival outcomes and risk factors for neonates and infants requiring emergent ECMO initiated outside the operating room?

Key Findings:

• Of 59 patients (68% extracorporeal CPR), 54% survived to discharge; overall survival post-ECMO was 57%, 47%, and 44% at 1, 3, and 5 years respectively.
• Manual CPR duration >36 minutes was significantly associated with cervical cannulation (p=0.001) and hypoxic encephalopathy (p=0.008).
• Independent mortality risk factors were non-cerebral bleeding (p=0.049) and absence of catheter/surgical intervention post-cannulation (p=0.004).

Clinical Relevance: Provides benchmark long-term outcome data supporting emergent ECMO deployment outside theatre for neonatal/infant cardiac arrest or shock, relevant to UK paediatric cardiac surgery centres developing rapid-response ECPR pathways.

Limitations: Small single-centre retrospective cohort over 14 years introduces selection bias and limits generalisability across evolving practice eras.

Study Type: Retrospective cohort study

Key Question: Are intraoperative one-lung ventilation (OLV) parameters associated with postoperative pulmonary infection (PPI) after radical lung cancer surgery?

Key Findings:

• PPI incidence was 11.0% (35/319); PPI patients had higher tidal volume, inspiratory pressure, ventilation frequency, FiO₂, and lower PEEP during OLV.
• Independent predictors of PPI: hypertension, lower FEV1, open thoracotomy, higher inspiratory pressure, and higher FiO₂ (all P<0.05).
• Multivariate model discriminated PPI well (AUC 0.856, 95% CI 0.782–0.906).

Clinical Relevance: Supports adoption of lung-protective OLV strategies (lower inspiratory pressures, judicious FiO₂ titration) during thoracic oncological surgery to reduce postoperative pulmonary infection risk, relevant to UK enhanced recovery after thoracic surgery (ERATS) pathways.

Limitations: Retrospective single-cohort design limits causal inference and generalisability; residual confounding (e.g., surgical technique variation) cannot be excluded.

Study Type: Meta-analysis (9 observational studies, n=7,302)

Key Question: Does extending coronary endarterectomy (CE) to multiple vessels, rather than a single vessel, worsen early outcomes when combined with CABG?

Key Findings:

• Multivessel CE associated with significantly higher 30-day/in-hospital mortality (RR 2.59, 95% CI 1.78–3.77) versus single-vessel CE.
• Higher perioperative myocardial infarction (RR 2.09, 95% CI 1.67–2.62) and stroke (RR 1.62, 95% CI 1.01–2.61) with multivessel CE.
• No difference in IABP use; findings robust to leave-one-out, HKSJ adjustment, and exclusion of pre-2000 studies, with no single covariate explaining the effect.

Clinical Relevance: For UK cardiothoracic teams managing diffuse coronary disease unsuitable for standard grafting, these findings support a selective, target-vessel-specific strategy for CE rather than routine multivessel extension, informing risk discussions and MDT decision-making in complex CABG cases.

Limitations: Evidence derives from largely retrospective, unadjusted cohorts with substantial risk of confounding by indication, limiting causal inference.

Study Type: Retrospective single-centre cohort study

Key Question: How efficient is postoperative surveillance imaging after thoracic aortic surgery in detecting findings requiring reintervention?

Key Findings:

• Of 1,074 surveillance imaging studies (≥30 days post-op) in 380 patients, only 3.8% led to reintervention, with a combined actionable finding rate of 5.3% — equating to 26.2 scans per reintervention and 82.6 per aortic reoperation.
• Cumulative reintervention incidence was low (2.8% at 1 year, 5.9% at 3 years, 8.3% at 5 years); 71.4% of reinterventions arose from elective (not emergency-triggered) surveillance.
• Emergency-index patients underwent more frequent imaging but showed similar reintervention risk and yield to non-emergency patients.

Clinical Relevance: Highlights a high imaging burden with low diagnostic yield in current UK-relevant surveillance practice, raising the case for risk-stratified, resource-conscious follow-up pathways within NHS aortic surgery services.

Limitations: Retrospective single-centre design limits generalisability and cannot confirm that reduced surveillance intensity would be safe without prospective validation.

Study Type: Retrospective cohort study (two-institution)

Key Question: Does using an ipsilateral in-situ internal thoracic artery (ITA) graft (same side as an upper-extremity arteriovenous fistula) during CABG worsen outcomes compared with contralateral in-situ or free ITA grafting in dialysis-dependent patients?

Key Findings:

• No significant difference in MACCE at median 2.4-year follow-up (39% ipsilateral vs. 50% contralateral/free; p=0.24).
• 3-year mortality similar between groups (29% vs. 21%; p=0.352); multivariable analysis showed no association between ITA-AVF laterality and MACCE (aOR 0.68, p=0.31) or mortality (aHR 1.56, p=0.291).
• No significant differences in perioperative complications, 30-day mortality, or prolonged ventilation.

Clinical Relevance: Supports current UK practice of using ipsilateral ITA grafts when anatomically preferable in dialysis patients with AVFs, without evidence of increased steal-related harm, potentially simplifying conduit selection in this common ESRD-CABG population.

Limitations: Small, retrospective, non-randomised cohort (n=122) limits statistical power and causal inference; findings are hypothesis-generating pending larger multicentre validation.

Study Type: Case report

Key Question: Can a distant primary malignancy (renal cell carcinoma) metastasise directly into a separate, unrelated primary tumour (lung adenocarcinoma) rather than disseminate systemically?

Key Findings:

• A 74-year-old man, 4 years post-nephrectomy for clear cell RCC, developed a subsolid right upper lobe nodule resected via uniportal thoracoscopic S1 segmentectomy with mediastinal lymphadenectomy.
• Histopathology confirmed primary lung adenocarcinoma harbouring a focal deposit of metastatic ccRCC, with no nodal involvement or systemic metastatic spread.
• Patient remains disease-free at follow-up; authors state this is the first reported case of ccRCC-into-LUAD tumour-to-tumour metastasis without systemic dissemination.

Clinical Relevance: Highlights the need for careful histopathological scrutiny of new pulmonary nodules in patients with prior malignancy, as apparent metastases may represent a second primary with an embedded tumour-to-tumour metastasis, altering staging and prognosis relevant to UK lung cancer MDT decision-making.

Limitations: Single case report, limiting generalisability and mechanistic understanding of this phenomenon.

Study Type: Retrospective single-centre case series (n=20)

Key Question: Does a delayed Norwood strategy, staged after bilateral pulmonary artery banding, improve outcomes in high-risk neonates with hypoplastic left heart syndrome/variants compared with primary Norwood?

Key Findings:

• Bilateral PA banding performed at median 2.5 days; delayed Norwood at median 36 days achieved 75% operative survival in a high-risk cohort (prematurity 35%, genetic syndromes 50%, cardiogenic shock 35%).
• Norwood performed within 4 weeks of banding avoided pulmonary artery reinterventions; median vasoactive-inotropic score fell 47% within 48h post-Norwood.
• Postoperative cerebral NIRS improved progressively (53%→58%→63% at 0/12/36h) in non-ECMO patients, suggesting improved end-organ perfusion.

Clinical Relevance: Offers UK congenital cardiac centres a potential staged strategy to improve survival in high-risk HLHS neonates who would otherwise carry prohibitive primary Norwood mortality, relevant to MDT risk-stratification and surgical timing decisions.

Limitations: Small, single-centre, retrospective cohort without a contemporaneous comparator group, limiting causal inference and generalisability.