Infective coronary arteritis: a pathological analysis at autopsy

Cardiovascular pathology in vasculitis

Vasculitides are diseases that can affect any vessel. When cardiac or aortic involvement is present, the prognosis can worsen significantly. Pathological assessment often plays a key role in reaching a definite diagnosis of cardiac or aortic vasculitis, particularly when the clinical evidence of a systemic inflammatory disease is missing. The following review will focus on the main histopathological findings of cardiac and aortic vasculitides.

Isolated Coronary Arteritis in Adults: a Single-Center Experience from China

Isolated coronary arteritis (ICA) is an extremely rare and life-threatening vasculitis with only a limited number of reports in the literature. We retrospectively reviewed the clinical data of 10 ICA patients in our center from 2012 to 2022 and compared them with patients with Takayasu arteritis who presented with coronary arteritis initially (TAK-CA patients). We found that ICA predominantly affected women and most commonly involved the ostium and the proximal segment of the coronary arteries, causing mainly stenotic lesions. The C-reactive protein and erythrocyte sedimentation rate were grossly normal and significantly lower than those of TAK-CA patients (p = 0.027, p = 0.009, respectively). Intravascular ultrasound imaging showed superiority in differentiating coronary vasculitis from atherosclerosis. Restenosis of the coronary arteries occurred rapidly if not treated promptly and appropriately. Systemic glucocorticoid combined with immunosuppressive agents, especially cyclophosphamide, was a promising strategy for treating ICA.

Sudden cardiac death in South India: Incidence, risk factors and pathology

BACKGROUND

Sudden cardiac death (SCD) is a major cause of mortality secondary to coronary artery disease (CAD) in the industrialized societies. Although South Asians have a high prevalence of CAD, the frequency and underlying pathology of SCD among this population are unknown.

METHODS

Medical records of consecutive patients presenting with unexplained sudden death (USD) in a tertiary care center were reviewed. Patients with trauma, violent deaths, positive toxicology and non-cardiac pathology were excluded to determine sudden cardiac death (SCD). Cardiac pathological findings were analyzed by autopsy. SCD rate was estimated based on census and government vital statistics for the years studied.

RESULTS

During a two year period, 223 patients (mean age 55 + 10 yrs, 78.9% male, body mass index 26 + 4, 60% smokers, 39% known CAD, 46% hypertension, 43% diabetes) presented to hospital with USD. SCD was attributed to myocardial infarction (MI) in 87% of cases; 69% were acute (96% anterior MI); 76% were small/moderate infarct and 9.9% of the cohort had normal hearts. Based on official municipal vital statistics, the SCD rate in those >35 yrs of age was estimated as 39.7/100,000 with male/female ratio of 4.6.

CONCLUSIONS

SCD in this south Indian city occurred predominantly in men of relatively young age and was most frequently associated with small or moderate-sized acute MI. Improved health care access, preventive measures and enhanced emergency management may reduce SCD from acute MI in this locale.