Atrioventricular and intraventricular blocks in the setting of acute coronary syndromes: a narrative review

Schiavone, Marco; Sabato, Federica; Gobbi, Cecilia; Denora, Marialessia; Zanchi, Lucrezia; Gasperetti, Alessio; Forleo, Giovanni B.

doi:10.31083/j.rcm2202036

Cited by 2 publications

(1 citation statement)

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“…So, AV blocks may accompany right coronary artery occlusion [ 31 ]. Also, the results of a narrative study showed that patients with inferior MI and left anterior descending artery obstruction may have a significantly higher risk of developing complete AV node block [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

Can prolonged P-R interval predict clinical outcomes in non-ST elevation acute coronary syndrome patients?

Zareei,

Zareiamand,

Kamali

et al. 2024

BMC Cardiovasc Disord

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Background The present study aimed to respond to clinical question, can prolonged P-R interval predict clinical outcomes in non-ST elevation acute coronary syndrome patients? Methods This descriptive-analytical study was conducted on cardiac patients. All of the non-ST elevation acute coronary syndrome (NSTEACS) including non-ST elevation myocardial infarction (NSTEMI) and unstable angina patients included in the study. Then they divided into two groups: prolonged P-R interval and normal P-R interval. The patients who had a history of digoxin and calcium channel blocker use, using antiarrhythmic drugs, known valvular or congenital heart disease and connective tissue, unreadable P-R interval and cardiac block were excluded. Data were collected using the questionnaire consisted demographic data and clinical outcomes and a follow-up part was completed by one of the researchers. Results Finally, 248 patients completed the study. The results showed both of the two groups had significant differences in terms of the history of myocardial infarction (MI) (p = 0.018), the level of high-density lipoprotein (HDL) (p = 0.004), heart rate (p = 0.042), inverted T wave (p = 0.017), anterior ST- segment depression (p = 0.008), normal report of coronary angiography (CAG) (p = 0.003), three vessels disease (p = 0.043), left main lesion (p = 0.045) and SYNTAX score (p = 0.032) based on the CAG report. The results of six-month follow-up showed although, the frequency of ischemic stroke, coronary artery disease (CAD) and cardiovascular death were higher in prolonged P-R interval groups. The chi-square test showed this difference was statistically non-significant (p > 0.05). The multivariate logistic regression model revealed non-significant relationships between prolonged P-R interval and SYNTAX score, significant CAD, three-vessel disease, inverted T wave, anterior ST depression, heart rate and HDL. Conclusions Based on the results of our study the six-month follow-up showed non-significant outcomes. Further studies are recommended to assess the long-term outcomes.

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Section: Discussionmentioning

confidence: 99%