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Journal and News Scan

Source: Annals of Surgery
Author(s): Bouras, George; Marie Burns, Elaine; Howell, Ann-Marie; Mark Bagnall, Nigel; Lee, Henry; Athanasiou, Thanos; Darzi, Ara

This article systematically reviewed the impact of surgical adverse events (SAEs) on quality of life after major GI surgery.  The mean difference in QOL between pts with and without SAEs was highest for esophagectomy (0.14; scale 0 to 1), while results for antireflux surgery were mixed. 

Source: Annals of Thoracic Surgery
Author(s): Craig H. Selzman, Jesse L. Madden, Aaron H. Healy, Stephen H. McKellar, Antigone Koliopoulou, Josef Stehlik, Stavros G. Drakos

Selzman and colleagues provide an outstanding overview of the state of the art of bridge to recovery, describing a paradigm shift that has been occurring.  A consistent theme over the years is that recovery likelihood is enhanced in younger patients, those with non-ischemic cardiomyopathy, and those who have had HF for shorter durations.  Although the INTERMACS database reflects that only about 1% of patients are successfully bridged to recovery, several studies have demonstrated that more patients may be recovered if a proactive approach is undertaken.  Such an approach necessarily includes the early identification of potential candidates for removal, the modification of the surgical approach to facilitate later device removal, an active surveillance program, the institution of intensive adjuvant medical therapy, the adoption of standardized weaning protocols, and further exploration of less invasive techniques for removal.  The authors effectively argue that only with a wholesale expansion of such a paradigm shift will more patients be successfully weaned.  The devil--of course--lays in the details. The ongoing RESTAGE-HF trial will hopefully elucidate some of these details.

 

Source: Journal of Thoracic and Cardiovascular Surgery
Author(s): Diyar Saeed, Bujar Maxhera, Hiroyuki Kamiya, Artur Lichtenberg, Alexander Albert

The authors describe an alternative technique for insertion of a temporary RVAD so as to allow minimally invasive removal  without sternotomy after RV recovery.  An elongated graft is sewn to the PA and exited in the subxyphoid area at a site that is separate from the sternotomy incision.  After exiting, the graft is attached to an outflow cannula.  Inflow from the RA is accessed via a long cannula inserted percutaneously in the femoral vein.  At the time of RVAD removal, the graft is exposed in the subxyphoid space, where it is transected, ligated, and returned to the chest.  The femoral cannula is removed from the groin and pressue held at its entry site until hemostasis is achieved.

Innovative ways of allowing removal of a temporary RVAD without the need for sternotomy are of great value.  Surgeons should have these tools in their armamentarium.  Importantly, there are percutaneous RVADs on the horizon that may ultimately allow RVAD removal without necessarily a return trip to the OR.  Innovation and technology are playing a central role in rendering MCS surgery less invasive and therefore safer.

Source: Circulation
Author(s): Cuypers JA, Menting ME, Konings EE , Opić P, Utens EM, Helbing WA, Witsenburg M, van den Bosch AE, Ouhlous M, van Domburg RT, Rizopoulos D, Meijboom FJ, Boersma E, Bogers AJ, Roos-Hesselink JW

The authors of this article aimed to describe survival and clinical outcomes beyond 30 years of follow-up after surgical repair of Tetralogy of Fallot. They found a survival of 72% after 40 years. Health status was comparable to the Dutch population. Factors that were associated with late mortality included: a prior shunt operation, low temperature during surgery and early postoperative arrhythmias. They conclude that although many patients needed reoperation or developed arrhythmias, long-term survival was good, as was health status.

Source: BioMed Central Cancer
Author(s): Emily A Vucic, Kelsie L Thu, Larissa A Pikor, Katey SS Enfield, John Yee, John C English, Calum E MacAulay, Stephen Lam, Igor Jurisica and Wan L Lam

This study was conducted in 94 lung adenocarcinoma patients matching pairs from current, former and never smokers' lung adenocarcinoma and non-malignant lung parenchymal tissue.   Investigators discovered different smoking-specific microRNA differences. These findings may explain distinct tumorigenic processes influenced by different smoking and non-smoking expositions.

Source: Centers for Medicare & Medicaid Services
Author(s): CMS

CMS determined that the evidence of benefit for CT screening for lung cancer is sufficient to permit this as an annual benefit for Medicare and Medicaid recipients in the US.  The availability of such coverage will be limited, however, by the need to have the screening as part of a comprehensive counseling (smoking cessation, etc) visit with qualified physicians or non-physician practitioners.  Radiologists and imaging centers must meet specific criteria, and activity must be submitted to a registry.

Source: Journal of Clinical Oncology
Author(s): Ariadna Tibau, Philippe L. Bedard, Amirrtha Srikanthan, Josee-Lyne Ethier, Francisco E. Vera-Badillo, Arnoud J. Templeton, Alberto Ocaña, Bostjan Seruga, Agustí Barnadas and Eitan Amir

This study explored financial conflicts of interest (FCOI) among authors of published guidelines and consensus statements and their relationship to endorsement of specific drugs.  93% of recent articles reported FCOI status.  Of articles publishing funding sources, 65% reported partial or full industry funding.  Endorsement of chemotherapeutic agents was strongly associated with FCOIs (p=0.001).

Source: Journal of Clinical Oncology
Author(s): Stephen J. Murphy, Marie-Christine Aubry, Faye R. Harris, Geoffrey C. Halling, Sarah H. Johnson, Simone Terra, Travis M. Drucker, Michael K. Asiedu, Benjamin R. Kipp, Eunhee S. Yi, Tobias Peikert, Ping Yang, George Vasmatzis and Dennis A. Wigle

Differentiating a primary lung cancer from an intrapulmonary metastasis can be challenging.  The authors developed a lineage test using whole genome amplification and next-generation sequencing to identify breakpoints in known primary tumors and known metastases.  Independent primary tumors did not share any genomic rearrangements, whereas primary tumors and their known metastases all had shared rearrangements.  This type of analysis may enable pathologists to distinguish primary lung tumors from intrapulmonary mets.

Source: Chest
Author(s): Allan J. Walkey; Bradley G. Hammill; Lesley H. Curtis; Emelia J. Benjamin

The authors explored a sample of Medicare patients who survived sepsis during hospitalization to assess the impact of afib developing during sepsis on long-term outcomes.  Of nearly 139,000 sepsis survivors, 7% had new onset afib during sepsis.  Of those pts, 55% were found to have afib after hospitlization.  New onset afib during sepsis was associated with increased risks of subsequent heart failure, stroke, and death.

Source: Journal of Heart and Lung Transplantation
Author(s): Kavitha Muthiah, Desiree Robson, Roslyn Prichard, Robyn Walker, Sunil Gupta, Anne M Keogh, Peter S Macdonald, John Woodard, Eugene Kotlyar, Kumud Dhital, Emily Granger, Paul Jansz, Phillip Spratt, Christopher S Hayward

The effects of exercise, increasing pump speed, or both on invasive hemodynamics in centrifugal flow LVAD patients were analyzed in this small study.  Findings included:

  • Increasing pump speed at rest increased pump flow and decreased PCWP.
  • Exercise increased pump flow but yielded increased right and left-sided filling pressures.
  • Exercise combined with increased pump speed increased pump flow further (synergistic effect) without lowering right- and left-sided filling pressures.

Questions raised:

  • What should be done to improve unloading in LVAD patients during exercise?
  • Should algorithms be included in the LVAD that automatically uptitrate RPMs during exercise?
  • Would increasing pump speeds further, beyond manufacturer's recommendations, safely improve unloading during exercise?

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