2026

Arteriolar Collapse and Haemodynamic Incoherence in Shock: Rethinking Critical Closing Pressure (2026)

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Type of publication:

Journal article

Author(s):

*Miller, Ashley; Rola, Philippe; Spiegel, Rory; Haycock, Korbin.

Citation:

Journal of Personalized Medicine. 16(2), 2026 Feb 01.

Abstract:

Critical closing pressure (CCP) and the vascular waterfall have long been used to explain perfusion failure in shock, yet their physiological meaning has been inconsistently interpreted. CCP is frequently treated as a continuous downstream pressure and inserted into formulas such as mean arterial pressure (MAP) – CCP, implying that a collapse threshold behaves like an opposing pressure even when vessels remain open. Drawing on classical vascular mechanics, whole-bed flow studies, microvascular models, and contemporary clinical physiology, we show that this interpretation is incorrect. Tone-dependent arteriolar collapse does not behave as a Starling resistor: CCP is a threshold at which smooth-muscle tension exceeds intraluminal pressure and vessels close, not a pressure governing flow in patent vessels. Perfusion becomes heterogeneous because different vascular beds reach their collapse thresholds at different pressures (via excessive tone, extrinsic compression, or profound hypotension), disconnecting macro-haemodynamics from microcirculatory flow. This explains why systemic variables such as MAP and systemic vascular resistance (SVR) may appear adequate even while tissues are under-perfused, a phenomenon now termed haemodynamic incoherence. Reframing CCP as a binary collapse threshold resolves longstanding contradictions in the literature, clarifies why MAP-centred targets often fail, and unifies the behaviour of shock states within a four-interface model of circulatory coupling. Therapeutically, the aim is not to "restore a waterfall" but to reopen closed vascular territories by lowering excessive tone, relieving external pressure, or raising truly low arterial inflow. This mechanistic reinterpretation provides a more coherent, physiologically grounded approach to personalised perfusion management in critical illness.

DOI: 10.3390/jpm16020078

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Day case and inpatient elective thyroid lobectomy across England: observational study of variation in practice and safety (2026)

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Type of publication:

Journal article

Author(s):

Monaghan, Michael; Gray, William K; *Cheetham, Mark; Dent, Paul; Briggs, Tim W R; Lansdown, Mark.

Citation:

British Journal of Surgery. 113(2), 2026 Feb 11.

Abstract:

BACKGROUND: Day case elective surgery is becoming increasingly common across a range of procedures. The aim of this study was to investigate the safety of day case thyroid lobectomy, a procedure with low uptake in the UK.

METHODS: This study analysed the Hospital Episode Statistics administrative data set for all first-time elective thyroid lobectomies performed on adults in England from 1 April 2017 to 31 March 2024. The primary outcome was 30-day emergency readmission and secondary outcomes were 30-day emergency readmission for complications and specifically for haemorrhage. The primary exposure variable was whether patients were day case patients or inpatients. Models were adjusted for the demographic and frailty characteristics of the patients.

RESULTS: Over the 7-year interval, 41 518 elective thyroid lobectomies were performed by 127 different hospital trusts. The day case rate was 9.9% (4125 patients) across all hospital trusts. Rates in the 118 hospital trusts conducting >20 procedures during the 7 years varied from 0% to 74.6%. Day case surgery was associated with a lower 30-day emergency readmission rate (OR 0.73 (95% c.i. 0.56 to 0.96); P < 0.021), with no evidence of association with poorer outcomes. There was no evidence that trusts with day case rates >30% had poorer outcomes than trusts with day case rates <1%.

CONCLUSION: In low-risk patients, day case thyroid lobectomy is safe.

DOI: 10.1093/bjs/znaf299

Pulmonary Embolism and Myocardial Infarction With Non-obstructive Coronary Arteries in Immune Thrombocytopenia: Unmasking Underlying Antiphospholipid Syndrome (2026)

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Type of publication:

Journal article

Author(s):

*Shahzeb, Muhammad; Naeem, Faiqa Jabeen; *Naz, Kiran; *Irfan, Muhammad; *Ahmad, Nawaid; Rafiq, Nawal; Ul Haq, Ijaz.

Citation:

Cureus. 18(1):e100731, 2026 Jan.

Abstract:

This case report presents the clinical scenario of a 35-year-old male patient who experienced chest pain due to a combination of pulmonary embolism (PE) and myocardial infarction with non-obstructive coronary arteries (MINOCA), concurrently while undergoing treatment with avatrombopag for immune thrombocytopenia (ITP). His investigations included a CT pulmonary angiogram that confirmed a PE, a coronary angiography which was normal, a cardiac MRI which showed evidence of subendocardial infarct, and a CT coronary angiogram, which was normal. His unique presentation with these findings prompted further investigations, which revealed an undiagnosed antiphospholipid syndrome (APS) alongside a patent foramen ovale (PFO). Hence, the paradoxical thrombotic incidents were precipitated by this unique diagnosis. After establishing the diagnosis, our patient was commenced on warfarin, and his treatment protocol for ITP was changed to a different drug. He remains under haematology follow-up.

DOI: 10.7759/cureus.100731

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IUGA Opinion Paper on Obstructed Defecation: Management of Clinical and Proctographic Rectoceles (2026)

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Type of publication:

Journal article

Author(s):

*Rachaneni, Suneetha; Dietz, Hans Peter; Latthe, Pallavi; Sirany, Annie; Spivak, Anna; Dua, Anupreet.

Citation:

International Urogynecology Journal. 37(1):75-85, 2026 Jan.

Abstract:

INTRODUCTION AND HYPOTHESIS: Obstructed defecation syndrome (ODS) is a defecatory abnormality with a sensation of incomplete evacuation, the need to strain at stool, the need for digitation in the vagina, the anus, or the perineum. Anterior rectocele and rectal intussusception are the frequent pathologies behind ODS. The review focuses on the assessment and treatment of obstructed defecation in women with rectocele, recto-enterocele and rectal intussusception in the remit of a urogynecologist.

METHODS: A working subcommittee from the International Urogynecology Association (IUGA) Research and Development (R&D) Committee was formed with colorectal surgeons from the American Society of Colon & Rectal Surgeons (ASCRS). An initial document was drafted based on a literature review. The review focused on the treatment options of women with presenting with obstructed defecation and posterior compartment prolapse either on clinical examination or on imaging. After evaluation by the entire IUGA R&D Committee revisions were made. The quality of the evidence was graded and used to form consensus recommendations.

RESULTS: Ultrasound and dynamic MRI are helpful imaging modalities in triaging patients. A defecating proctogram to evaluate the size of rectal intussusception and enterocele is the standard investigation. Conservative therapies are effective first-line management options. The transvaginal native tissue rectocele repair is a safe and effective first-line surgical treatment in women with obstructed defecation.

CONCLUSIONS: When evaluating patients with obstructive defecation, it is important to address anatomy as well as function. In the absence of a clinically significant rectocele or enterocele during vaginal examination, in women with obstructed defecation, referral to a gastroenterologist or colorectal surgeon for further evaluation and management is recommended.

DOI: 10.1007/s00192-025-06288-7

Emergency hospital admissions while on an elective waiting list in England: an observational study using administrative data (2026)

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Type of publication:

Journal article

Author(s):

James, Anthony P; Gray, William K; *Cheetham, Mark J; Eardley, Ian; Lansdown, Mark.

Citation:

British Journal of Surgery. 113(2), 2026 Feb 11.

Abstract:

INTRODUCTION: Patients awaiting elective procedures often have conditions that carry a risk of medical emergencies. This study quantifies the extent and variation of emergency hospital admissions during the waiting period across selected specialties and procedures.

METHODS: Data from the NHS England Waiting List Minimum Dataset linked to the Secondary Uses Service hospital admissions data set from 1 January 2022 to 31 December 2023 was analysed. Emergency admissions occurring while patients awaited treatment were identified and categorized from 'very likely' related to the index condition or its recognized co-morbid risks-and potentially avoidable through definitive treatment-through to 'unrelated'.

RESULTS: In 2023 some 2 093 789 waits (both incomplete and complete) were recorded across 41 selected procedures spanning 11 specialties. Over a combined waiting time of 33 832 790 days, 69 322 emergency admissions occurred, accounting for 535 806 bed days. The highest emergency admission rates per 52 weeks waiting were observed for urinary stent procedures (0.71), endoscopic retrograde cholangiopancreatography (0.63), and urinary catheter care (0.55). Nine procedures had more emergency bed days during the wait than elective bed days post-treatment, with the highest emergency/elective bed day ratios for ureteric stones (4.59), colonoscopy (2.80), and ablation/cardioversion (2.05).

CONCLUSION: A substantial number of patients on elective waiting lists are being admitted as emergencies during their wait, placing a burden on emergency care that would be avoided through more timely treatment. The variation in risk between specialties and pathways requires further prioritization strategies that mitigate patients' risk of associated harm, acting both within and across waiting lists, specialties, and organizations.

DOI: 10.1093/bjs/znaf292

Remote home cardiotocography: A systematic review and meta-analysis (2026)

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Type of publication:

Systematic Review

Author(s):

Le Vance, Jack; *Adeoye, Adekunle; Man, Rebecca; Eltaweel, Nashwa; Gurney, Leo; Morris, R Katie; Hodgetts Morton, Victoria.

Citation:

PLOS Digital Health. 5(1):e0001184, 2026 Jan.

Abstract:

Cardiotocography (CTG) is a common investigative modality in obstetrics to evaluate the fetal condition. Advancements in digital technology has enabled the innovation of CTG monitoring for usage in the home setting. This review aims to comprehensively examine the current evidence on the effectiveness and applicability of home antenatal CTG monitoring. MEDLINE, EMBASE, Cochrane, Web of Science, and PubMed databases were searched from inception to June 2025. Primary studies examining home antenatal CTG were included. For randomised controlled trials (RCTs), the joint primary outcomes were perinatal mortality and emergency caesarean section. For observational studies, the feasibility, diagnostic accuracy, qualitative and economic burden of home CTG were evaluated. RCTs were eligible for meta-analysis using risk ratio or mean difference, with 95% confidence intervals. Included observational studies were narratively described due to significant methodological heterogeneity. 39 studies (28 observational, seven RCTs and four qualitative studies), comprising of 7240 participants were included. Home antenatal CTG monitoring was non-inferior to conventional care across all meta-analysed maternal, perinatal and healthcare usage outcomes. GRADE assessments were low/very low quality of evidence. Home CTG monitoring was feasible in several settings and remote interpretation was graded as moderate to excellent. Transmission failures were frequently low but commonly occurred due to infrastructure and/or equipment errors. Remote CTG monitoring demonstrated comparative capabilities to conventional CTG with respect to coincidence and beat-to-beat variability. Overall acceptability ratings were high for patient and providers. Often implementation costs were high but accrued back by non-fixed savings when compared against routine care. High-quality studies were underrepresented, particularly when assessing service-led and safety outcomes. Home antenatal CTG monitoring demonstrates noninferiority to conventional care across several outcomes, representing a promising avenue for antenatal management However, current evidence is of low quality and additional high-quality evidence with sufficient methodological detail and standardised outcome assessment is required prior to making definitive recommendations.

DOI: 10.1371/journal. pdig.0001184

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Is robotic surgery ready for emergency cholecystectomy? A systematic review and meta-analysis of robotic versus laparoscopic approach in acute cholecystitis (2026)

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Type of publication:

Systematic Review

Author(s):

Jamal, Zohaib; Talal, Muhammad Anza; Saeed, Jahanzaib; Siddiqui, Asher; Haider, Muhammad Ijlal; Zafar, Khizra; Zaidi, Hammad.

Citation:

Journal of Robotic Surgery. 20(1):166, 2026 Jan 12.

Abstract:

INTRODUCTION: Acute cholecystitis is typically managed with laparoscopic cholecystectomy, though inflammation and distorted anatomy can increase operative difficulty. Robotic cholecystectomy may offer technical advantages through improved visualisation and instrument dexterity, yet current evidence is limited, heterogeneous, and entirely observational, with no randomized trials comparing the two approaches in the emergency setting. This systematic review and meta-analysis synthesises existing comparative data to determine whether robotic assistance confers meaningful operative or postoperative benefits over standard laparoscopy in acute cholecystitis.

MATERIALS AND METHODS: A PRISMA-compliant systematic review and meta-analysis was performed. Comprehensive searches of major databases (2015-2025) identified comparative studies of robotic versus laparoscopic cholecystectomy for acute/emergency cholecystitis in adults. Eligible studies reported at least one perioperative or postoperative outcome; elective, paediatric, single-incision, and non-comparative designs were excluded. Outcomes included operative time, conversion, intra-operative complications, bile duct injury, length of stay, readmission, reoperation, and mortality. Risk of bias was assessed using ROBINS-I. Meta-analyses were conducted in RevMan using random-effects models, with heterogeneity assessed by I2 and standard continuity corrections applied for zero-event studies.

RESULTS: Seven observational studies comprising 143,717 patients met the inclusion criteria. Operative time and length of stay could not be meta-analysed due to inconsistent reporting and were therefore summarised narratively, with both outcomes appearing broadly comparable between robotic and laparoscopic groups. Meta-analysis demonstrated a significantly lower risk of conversion to open surgery with robotic cholecystectomy (RR 0.61, 95% CI 0.50-0.75; I2 = 44%). No significant differences were observed between robotic and laparoscopic approaches for intra-operative complications (RR 0.72, 95% CI 0.38-1.36; I2 = 40%), bile duct injury (RR 0.97, 95% CI 0.77-1.21; I2 = 0%), overall postoperative complications (RR 1.10, 95% CI 0.80-1.52; I2 = 95%), 30-day readmission (RR 0.88, 95% CI 0.50-1.54; I2 = 18%), reintervention or return to theatre (RR 0.33, 95% CI 0.04-2.48; I2 = 78%), or 30-day mortality (OR 1.28, 95% CI 0.86-1.90; I2 = 0%). Event rates for bile duct injury, major complications, reintervention, and mortality were uniformly low across all cohorts, limiting the precision of pooled estimates. Risk-of-bias assessment using ROBINS-I indicated a moderate to serious overall risk of bias in six of the seven studies, primarily due to residual confounding, non-random treatment allocation, and incomplete reporting of disease severity and operative complexity.

CONCLUSION: Robotic cholecystectomy is a safe and feasible alternative to laparoscopy for acute cholecystitis, demonstrating a consistent reduction in conversion to open surgery and comparable intra-operative and postoperative safety outcomes. However, as current evidence is limited to heterogeneous observational studies with incomplete clinical detail, robust prospective research-with detailed severity grading, surgeon-experience assessment, workflow evaluation, and cost-effectiveness analysis-is needed to more clearly define its role in emergency biliary surgery.

DOI: 10.1007/s11701-026-03145-7

Vascular Eagle's syndrome: difficult diagnosis in patient with recurrent transient ischaemic attack (2026)

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Type of publication:

Journal article

Author(s):

Lyons, T; *Saunders, T; Littleton, E; Monksfield, P; Tiwari, A.

Citation:

Annals of the Royal College of Surgeons of England. 2026 Jan 12.

Abstract:

Eagle's syndrome describes the elongation of the styloid process. The condition has been recognised for over 90 years and causes a wide range of symptoms depending on the level of compression. Compression of the internal carotid artery by the styloid process is referred to in the literature as 'stylocarotid syndrome' or 'vascular Eagle's syndrome' (VES), presenting most commonly as arterial dissection and cerebrovascular events. We present the case of a 53-year-old patient who presented with multiple cerebrovascular events over a six-month period. Computed tomography angiography (CTA) suggested VES; however, magnetic resonance imaging (MRI) of the neck revealed no arterial wall abnormalities, including dissection. Despite the escalation of medical therapy, the patient continued to experience multiple transient ischaemic attacks. Following multidisciplinary team discussion and exclusion of other sources of emboli, a transcervical styloidectomy was performed freeing compression of the carotid artery, resulting in the complete resolution of symptoms. VES should be considered in patients with recurrent or unexplained cerebrovascular or cervical neurogenic symptoms even in the absence of arterial injury. We recommend early styloidectomy when there is a strong clinical suspicion of VES to achieve definitive symptom resolution.

DOI: 10.1308/rcsann.2025.0113

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