The Chinese Society of Cardiology (CSC) has issued a consensus statement on the management of cardiac emergencies during the COVID-19 pandemic.
The document first appeared in the Chinese Journal of Cardiology, and a translated version was published in Circulation. The consensus statement was developed by 125 medical experts in the fields of cardiovascular disease and infectious disease. This included 23 experts currently working in Wuhan, China.
Three overarching principles guided their recommendations.
- The highest priority is prevention and control of transmission (including protecting staff).
- Patients should be assessed both for COVID-19 and for cardiovascular issues.
- At all times, all interventions and therapies provided should be in concordance with directives of infection control authorities.
“Considering that some asymptomatic patients may be a source of infection and transmission, all patients with severe emergent cardiovascular diseases should be managed as suspected cases of COVID-19 in Hubei Province,” noted writing chair and cardiologist Yaling Han, MD, of the General Hospital of Northern Theater Command in Shenyang, China.
In areas outside Hubei Province, where COVID-19 was less prevalent, this “infected until proven otherwise” approach was also recommended, although not as strictly.
Diagnosing CVD and COVID-19 simultaneously
In patients with emergent cardiovascular needs in whom COVID-19 has not been ruled out, quarantine in a single-bed room is needed, they wrote. The patient should be monitored for clinical manifestations of the disease, and undergo COVID-19 nucleic acid testing as soon as possible.
After infection control is considered, including limiting risk for infection to health care workers, risk assessment that weighs the relative advantages and disadvantages of treating the cardiovascular disease while preventing transmission can be considered, the investigators wrote.
At all times, transfers to different areas of the hospital and between hospitals should be minimized to reduce the risk for infection transmission.
The authors also recommended the use of “select laboratory tests with definitive sensitivity and specificity for disease diagnosis or assessment.”
For patients with acute aortic syndrome or acute pulmonary embolism, this means CT angiography. When acute pulmonary embolism is suspected, D-dimer testing and deep vein ultrasound can be employed, and for patients with acute coronary syndrome, ordinary electrocardiography and standard biomarkers for cardiac injury are preferred.
In addition, “all patients should undergo lung CT examination to evaluate for imaging features typical of COVID-19. … Chest x-ray is not recommended because of a high rate of false negative diagnosis,” the authors wrote.
Intervene with caution
Medical therapy should be optimized in patients with emergent cardiovascular issues, with invasive strategies for diagnosis and therapy used “with caution,” according to the Chinese experts.
Conditions for which conservative medical treatment is recommended during COVID-19 pandemic include ST-segment elevation MI (STEMI) where thrombolytic therapy is indicated, STEMI when the optimal window for revascularization has passed, high-risk non-STEMI (NSTEMI), patients with uncomplicated Stanford type B aortic dissection, acute pulmonary embolism, acute exacerbation of heart failure, and hypertensive emergency.
“Vigilance should be paid to avoid misdiagnosing patients with pulmonary infarction as COVID-19 pneumonia,” they noted.
Diagnoses warranting invasive intervention are limited to STEMI with hemodynamic instability, life-threatening NSTEMI, Stanford type A or complex type B acute aortic dissection, bradyarrhythmia complicated by syncope or unstable hemodynamics mandating implantation of a device, and pulmonary embolism with hemodynamic instability for whom intravenous thrombolytics are too risky.
Interventions should be done in a cath lab or operating room with negative-pressure ventilation, with strict periprocedural disinfection. Personal protective equipment should also be of the strictest level.
In patients for whom COVID-19 cannot be ruled out presenting in a region with low incidence of COVID-19, interventions should only be considered for more severe cases and undertaken in a cath lab, electrophysiology lab, or operating room “with more than standard disinfection procedures that fulfill regulatory mandates for infection control.”
If negative-pressure ventilation is not available, air conditioning (for example, laminar flow and ventilation) should be stopped.