Cardiac Surgical Resuscitation: State of the Science

Nurses' roles and responsibilities in cardiac advanced life support: A single-site eDelphi study

BACKGROUND

Nurses are often the first responders to in-hospital cardiac arrest in postoperative cardiac surgical patients. Poor clarity about role expectations and responsibilities can hinder nurses' performance during cardiac advanced life support (CALS) procedures.

AIM

To seek expert consensus on nurses' roles and responsibilities in CALS for patients in postoperative cardiac surgical patients.

STUDY DESIGN

A two-round modified eDelphi survey. Delphi items were informed by guideline literature, an audit of resuscitation records and expert interviews. Panellists, drawn from a single site of a large tertiary health service in metropolitan Melbourne, included nurses, doctors and surgeons familiar with the management of cardiac arrest in post-operative cardiac surgical patients.

RESULTS

The two rounds of the modified eDelphi generated 55 responses. A consensus of >80% agreement was reached for 24 of the 41 statements in Round 2. All items related to nurses' roles and responsibilities during nurses pre- and post-arrest phases reached consensus. In contrast, only 29% (n = 4/14) of items related to peri-arrest, and 36% of those related to nurse scope of practise in CALS arrest (n = 4/11) reached consensus.

CONCLUSION

The study's aim was only partially achieved. Findings indicate high agreement about nurses' roles and responsibilities before and immediately after a cardiac arrest, but limited clarity about nurses' roles when implementing the CALS protocol, such as resternotomy and internal cardiac massage. There is an urgent need to address uncertainty about nurses' roles and scope of practice in CALS, which is essential to the recognition of nurses' contribution to the cardiac specialty workforce.

RELEVANCE TO CLINICAL PRACTISE

Uncertainty about nurses 'roles and responsibilities when implementing the CALS protocol may hinder their performance to their full scope of practice, leading to poor patient outcomes.

Enhancing Family-Centered Care in Cardiothoracic Surgery

The psychological impact of critical illness is far reaching, affecting patients and their loved ones. Family members face a multitude of stressors, ranging from concerns about death or permanent disability to stress over health care costs and lost wages. Patients are at risk for developing post-intensive care syndrome. Professional groups and patient safety organizations have crafted family-centered care (FCC) models that support hospitalized patients and their families. There is a paucity of data on use of FCC in cardiothoracic intensive care units. This article discusses FCC models and why they are beneficial to the needs of families of postoperative cardiothoracic surgery patients.

Using Nanosecond Shocks for Cardiac Defibrillation

The purpose of this review article is to summarize our current understanding of the efficacy and safety of cardiac defibrillation with nanosecond shocks. Experiments in isolated hearts, using optical mapping of the electrical activity, have demonstrated that nanosecond shocks can defibrillate with lower energies than conventional millisecond shocks. Single defibrillation strength nanosecond shocks do not cause obvious damage, but repeated stimulation leads to deterioration of the hearts. In isolated myocytes, nanosecond pulses can also stimulate at lower energies than at longer pulses and cause less electroporation (propidium uptake). The mechanism is likely electroporation of the plasma membrane. Repeated stimulation leads to distorted calcium gradients.