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The article focuses on the management of cardiogenic shock after acute coronary syndromes. Topics include the definition and pathophysiology of cardiogenic shock, the role of early mechanical circulatory support, and the importance of a multidisciplinary approach in managing the condition. The article also explores the challenges and controversies surrounding the use of mechanical circulatory support in this patient population.

The article focuses on potential afterload mismatch and the impact of pharmacologic support after MitraClip implantation a transcatheter therapy for mitral regurgitation. Topics include the definition and causes of afterload mismatch, the potential complications and risks associated with it, and the role of pharmacologic support in mitigating these risks.

Background: There is controversy regarding optimal use of benzodiazepines during cardiac surgery, and it is unknown whether and to what extent there is variation in practice. We sought to describe benzodiazepine use and sources of variation during cardiac surgeries across patients, clinicians, and institutions.Methods: We conducted an analysis of adult cardiac surgeries across a multicentre consortium of USA academic and private hospitals from 2014 to 2019. The primary outcome was administration of a benzodiazepine from 2 h before anaesthesia start until anaesthesia end. Institutional-, clinician-, and patient-level variables were analysed via multilevel mixed-effects models.Results: Of 65 508 patients cared for by 825 anaesthesiology attending clinicians (consultants) at 33 institutions, 58 004 patients (88.5%) received benzodiazepines with a median midazolam-equivalent dose of 4.0 mg (inter-quartile range [IQR], 2.0-6.0 mg). Variation in benzodiazepine dosage administration was 54.7% attributable to institution, 14.7% to primary attending anaesthesiology clinician, and 30.5% to patient factors. The adjusted median odds ratio for two similar patients receiving a benzodiazepine was 2.68 between two randomly selected clinicians and 4.19 between two randomly selected institutions. Factors strongly associated (adjusted odds ratio, <0.75, or >1.25) with significantly decreased likelihoods of benzodiazepine administration included older age (>80 vs ≤50 yr; adjusted odds ratio=0.04; 95% CI, 0.04-0.05), university affiliation (0.08, 0.02-0.35), recent year of surgery (0.42, 0.37-0.49), and low clinician case volume (0.44, 0.25-0.75). Factors strongly associated with significantly increased likelihoods of benzodiazepine administration included cardiopulmonary bypass (2.26, 1.99-2.55), and drug use history (1.29, 1.02-1.65).Conclusions: Two-thirds of the variation in benzodiazepine administration during cardiac surgery are associated with institutions and attending anaesthesiology clinicians (consultants). These data, showing wide variations in administration, suggest that rigorous research is needed to guide evidence-based and patient-centred benzodiazepine administration. [ABSTRACT FROM AUTHOR]

The article reports that intrathoracic airway obstructions behave differently to extrathoracic obstructions on inspiration and expiration. Topics include variety of approaches to the anaesthetic management of airway stenting are described, but communication and teamwork with the surgeon are paramount; and subsequent anaesthesia with a stent in situ either avoid tracheal intubation or use fibreoptic guidance.

Background: Cardiac surgery has one of the highest incidences of intraoperative awareness. The periods of initiation and discontinuation of cardiopulmonary bypass could be high-risk periods. Certain frontal EEG patterns might plausibly occur with unintended intraoperative awareness. This study sought to quantify the incidence of these pre-specified patterns during cardiac surgery.Methods: Two-channel bihemispheric frontal EEG was recorded in 1072 patients undergoing cardiac surgery as part of a prospective observational study. Spectrograms were created, and mean theta (4-7 Hz) power and peak alpha (7-17 Hz) frequency were measured in patients under general anaesthesia with isoflurane. Emergence-like EEG activity in the spectrogram during surgery was classified as an alpha peak frequency increase by 2 Hz or more, and a theta power decrease by 5 dB or more in comparison with the median pre-bypass values.Results: Data from 1002 patients were available for analysis. Fifty-five of those patients (5.5%) showed emergence-like EEG activity at least once during surgery with a median duration of 13.2 min. These patients were younger (median age, 59 vs 67 yr; P<0.001) and the median end-tidal isoflurane concentration before cardiopulmonary bypass was higher (0.82 vs 0.75 minimum alveolar concentration [MAC]; P=0.013). There was no significant difference between those with or without emergence-like EEG activity in sex, lowest core temperature, or duration of surgery. Forty-six of these EEG changes (84%) occurred within a 1 h time window centred on separation from cardiopulmonary bypass.Conclusion: The findings of this study suggest that approximately one in 20 patients undergoing cardiac surgery with a volatile anaesthetic agent have a sustained EEG pattern while surgery is ongoing that is often seen with emergence from general anaesthesia. Monitoring the frontal EEG during cardiopulmonary bypass may identify these events and potentially reduce the incidence of unintended awareness.Clinical Trial Registration: NCT02976584. [ABSTRACT FROM AUTHOR]

The COVID-19 outbreak has influenced the entire health care system, including cardiac surgery. In this review, the authors reveal practical aspects that are important during the COVID-19 pandemic with regards to the safe delivery of cardiac anesthesia. Timing for operations of the cardio-vascular system may be well programmed in most cases. Hence, the level of priorities must be defined for any single patient. The postponement of surgery may be convenient for most cases, if it is made in the best interest of the patient. The preanesthetic evaluation should be attentive of the respiratory history of the patient. Cardiac anesthesia always implies some respiratory monitoring; hence the existing clinical situation of the patient's respiratory system should be clear. In case of emergency surgery, the patient should be treated as if they potentially have or are at risk for the virus. In the case of a COVID-19 confirmed or suspected patient, attention must be made to preserve operating room and team integrity. The machineries are to be draped with plastic to simplify the disinfection after the operation. Perioperative management of suspected or confirmed COVID-19 patients must strictly follow the most relevant international guidelines. This review article has synthesized the common aspects present in the most important of these. [ABSTRACT FROM AUTHOR]

To investigate if an erector spinae plane (ESP) block decreases postoperative opioid consumption, pain and postoperative nausea and vomiting in patients undergoing robotically-assisted minimally invasive direct coronary artery bypass surgery (RAMIDCAB). A single-center, double-blind, prospective, randomized, placebo-controlled trial. Postoperative period; operating room, post-anesthesia care unit (PACU) and hospital ward in a university hospital. Sixty-four patients undergoing RAMIDCAB surgery via left-sided mini-thoracotomy and enrolled in the institutional enhanced recovery after cardiac surgery program. At the end of surgery, patients received an ESP catheter at vertebra T5 under ultrasound guidance and were randomized to the administration of either ropivacaine 0.5% (loading dose of 30 ml and three additional doses of 20 ml each, interspersed with a 6 h interval) or normal saline 0.9% (with an identical administration scheme). In addition, patients received multimodal analgesia including acetaminophen, dexamethasone and patient-controlled analgesia with morphine. Following the final ESP bolus and before catheter removal, the position of the catheter was re-evaluated by ultrasound. Patients, investigators and medical personnel were blinded for the group allocation during the entire trial. Primary outcome was cumulative morphine consumption during the first 24 h after extubation. Secondary outcomes included location and severity of pain, presence/extent of sensory block, duration of postoperative ventilation and hospital length of stay. Safety outcomes comprised the incidence of adverse events. Median (IQR) 24-h morphine consumption was not different between the intervention- and control-groups, 67 mg (35–84) versus 71 mg (52–90) (p = 0.25), respectively. Likewise, no differences were detected in secondary and safety endpoints. Following RAMIDCAB surgery, adding an ESP block to a standard multimodal analgesia regimen did not reduce opioid consumption and pain scores. • Randomized and placebo-controlled trial for unilateral ESP block in cardiac surgery. • Further research into dosing regimens for unilateral ESP block is required. • Postoperative pain following MIDCAB surgery is not reduced with ESP block. • ESP block did not reduce opioid consumption following MIDCAB surgery. • Multimodal analgesia without ESP was sufficient following MIDCAB surgery. [ABSTRACT FROM AUTHOR]

Magnetic resonance imaging (MRI) of the cardiovascular system has proven to be an invaluable diagnostic tool. Given the ability to allow for real-time imaging, MRI guidance of intraoperative procedures can provide superb visualization, which can facilitate a variety of interventions and minimize the trauma of the operations as well. In addition to the anatomic detail, MRI can provide intraoperative assessment of organ and device function. Instruments and devices can be marked to enhance visualization and tracking, all of which is an advance over standard X-ray or ultrasonic imaging. [ABSTRACT FROM AUTHOR]

Abstract: Emergency Department placement of a temporary transvenous cardiac pacemaker offers potential life-saving benefits, as the device can definitively control heart rate, ensure effective myocardial contractility, and provide adequate cardiac output in select circumstances. The procedure begins with establishment of central venous access, usually by a right internal jugular or left subclavian vein approach, although the femoral vein is an acceptable alternative, especially in patients who are more likely to bleed should vascular access become complicated. The indications for the procedure, as well as the equipment needed, are reviewed. Both blind and ECG-guided techniques of insertion are described. Methods of verification of pacemaker placement and function are discussed, as are the early complications of the procedure. [Copyright &y& Elsevier]

: ObjectiveWe examined socioeconomic disparities in coronary procedure rates after first events among hospitalized myocardial infarction (MI) patients.: Study Design and SettingInformation on MI patients in 1995 in Finland was obtained from the Finnish Cardiovascular Disease Register Project. Data on comorbidity, invasive treatments, hospitalizations, mortality, and socioeconomic status were obtained by linking data from the Finnish Hospital Discharge Register, cause of death register, population census, and the health insurance register using personal identity numbers.: ResultsIn 1995, 5172 patients aged 40 to 74 years were hospitalized for first MI. This corresponds to age-standardized event rates of 354/100,000 for men and 152/100,000 for women. Within 2 years, 33% of men and 21% of women underwent an invasive coronary procedure. Men in the lowest income third underwent 25% (95% confidence interval [CI] 12–36) fewer procedures than men in the highest third. Among women, the corresponding difference was 43% (95% CI 24–57). These disparities persisted throughout the 2-year follow-up, and they were not reduced by adjustment for comorbidity or hospital district.: ConclusionSocioeconomic disparities were observed in receipt of invasive cardiac procedures. More attention should be paid to equitable distribution of scarce health care resources. [Copyright &y& Elsevier]

The development of a national cardiac procedures database is in the interest of many groups: cardiac surgeons and interventional cardiologists, participating hospital units, patients, governments, health insurance funds and industry. To date, information about short-term outcomes of coronary interventions has been fragmented and uncoordinated at state and national levels. Long-term outcomes have not yet been systematically addressed in Australia. A highly desirable objective is the development of a dataset of information that is pertinent to the Australian context, with common minimum datasets for surgery and percutaneous intervention. Information will gain added value if it is linked to other national databases such as the National Death Index. Also, risk adjustment should be used to improve the value of outcome data. Development of a ‘common’ Cardiac Procedures Database, in turn, should lead to improved health policy and better health management in an area that currently runs at significant cost. Thus, provided due care is taken to protect the privacy of stakeholders, maintain quality control and entry of only valid information into the database, the resulting outcome will benefit all interested parties; clinicians, hospitals, patients and the wider Australian community. (Heart, Lung and Circulation; 10 (Suppl.): S22–S25). [ABSTRACT FROM AUTHOR]