The evaluation of right ventricular function in acute myocardial infarction by xenon-133

Martin, Wayne; Tweddel, A.C.; McGhie, Iain; Hutton, I.

doi:10.1097/00006231-198901000-00006

Cited by 6 publications

(4 citation statements)

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“…Using right-sided precordial leads for early RVMI diagnosis can be helping in giving appropriate treatment and improvement of prognosis [7. When IMI is accompanied by RVMI, more bradycardia, need for pacing, hypotension, and mortality will be possible complications. More than 30% of patients with IMI also have RVMI, but only 10% have remarkable hemodynamic instability due to RV dysfunction [6,8]. Ischemia in the RV may be causing systolic and diastolic dysfunction, causing a significant deficit in LV preload with a subsequent decrease in cardiac output (COP) and systemic hypotension [7].…”

Section: Globalize Your Researchmentioning

confidence: 99%

Qrs-Complex Fragmentations and Right Ventricular Infarction in the Presence of Inferior Infarction with Triple-Vessels Disease; Bad Initials but a Good Outcome

Elsayed¹

2022

JTCS

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Rationale: The term “fragmentation of the QRS complex” denotes the existence of high-frequency potentials (spikes) in the QRS-complex. It is either a marker for cardiac structural diseases inducing biventricular hypertrophy or any condition interfering with the normally homogeneous depolarization status inside the myocardium. An associated right ventricular infarction with inferior infarction maybe carry a risk impact and serious complications. Patient concerns: A 64-year-old married, farmer, heavy smoker, Egyptian male patient presented with acute severe chest pain and inferior with right ventricular ST-segment elevation myocardial infarction and fragmentation of the QRS complex. Diagnosis: QRS-complex fragmentations and right ventricular infarction in the presence of inferior infarction with the triple-vessels disease. Interventions: Electrocardiography, oxygenation, streptokinase intravenous infusion, echocardiography, and percutaneous transluminal coronary angioplasty. Outcomes: Dramatic response of acute inferior with right ventricular ST-segment elevation myocardial infarction and QRS-complex fragmentations to streptokinase. Lessons: Despite the presence of inferior and right ventricular ST-segment elevation myocardial infarction with QRS-complex fragmentations, but there is no correlation with the severity of the disease. Dramatic clinical and electrocardiographic response signifying the role of streptokinase and fibrinolytic. The presence of fragmentation of the QRS-complex may have a bidirectional impact from seriousness to complications.

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Section: Globalize Your Researchmentioning

confidence: 99%

Qrs-Complex Fragmentations and Right Ventricular Infarction in the Presence of Inferior Infarction with Triple-Vessels Disease; Bad Initials but a Good Outcome

Elsayed¹

2022

JTCS

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“…It is estimated that nearly half of the patients diagnosed with ischemic myocardial injuries exhibit some degree of right ventricular dysfunction (5). This condition is largely attributed to the shared blood supply between the posterior wall of the right ventricle and the inferior wall of the left ventricle by the right coronary artery (6). The involvement of the right ventricle, however, shows considerable variability, a factor attributed to several key elements.…”

Section: Introductionmentioning

confidence: 99%

Right Ventricular Infarction in Patients with Inferior Wall Myocardial Infarction and its Association with Various Risk Factors

Jehan,

Khan,

Wazir

et al. 2024

JHRR

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Background: Right ventricular infarction (RVI) is a significant complication of inferior wall myocardial infarction (IWMI), associated with increased mortality, cardiogenic shock, and ventricular arrhythmias. Despite its clinical importance, the detection and management of RVI remain challenging, underscoring the need for further investigation into its prevalence and associated risk factors. Objective: This study aims to assess the prevalence of RVI among patients with IWMI and to identify the major risk factors contributing to the development of RVI, thereby providing insights into more effective management strategies. Methods: A prospective descriptive study was conducted at a military hospital over a period of one year, involving 114 patients diagnosed with IWMI. Patients were screened for RVI using right-sided precordial leads in electrocardiograms. Data on demographics, risk factors, and clinical outcomes were collected. Statistical analyses, including chi-square and Student's t-tests, were employed to identify significant associations between RVI and potential risk factors. Results: Of the 114 patients with IWMI, 42 (36.8%) were diagnosed with RVI. The mean age of participants was 53.17 ± 9.06 years, with a predominance of males (61.4%). Hypertension was identified as the most significant risk factor for RVI, with 65.2% of hypertensive patients developing RVI compared to 17.6% of non-hypertensive patients (p < 0.001). Other significant associations included smoking (56.7% of smokers had RVI, p = 0.008) and diabetes mellitus (58.3% of diabetics had RVI, p = 0.014), while gender and dyslipidemia were not statistically significant predictors. Conclusion: The study highlights a substantial prevalence of RVI among patients with IWMI, with hypertension emerging as the most critical risk factor. These findings underscore the importance of comprehensive screening and management of hypertension and other modifiable risk factors in patients with IWMI to reduce the incidence of RVI and improve clinical outcomes.

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“…2 Right ventricular myocardial infarction occurs in approximately one-third of patients with acute inferior wall myocardial infarction (IWMI), and hemodynamic abnormalities became clinically significant in 10% of these patients. 3 Patients with right ventricular infarctions have much higher rates of significant hypotension, bradycardia requiring pacing support, and inhospital mortality than isolated IWMI. 4 Assessment and quantification of right ventricular function often are difficult and challenging.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity and Specificity of Myocardial Performance Indexing Assessing Acute Right Ventricular Infarction

Karim

Mondol

et al. 2022

TAJ: J of Teachers Assoc

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The goal of this study was to determine the sensitivity and specificity of the Myocardial Performance Index (MPI)for the assessment of acute right ventricular Infraction. This was a descriptive type of cross-sectional study. The study was carried out in the Coronary Care Unit, Department of Cardiology, Sir Salimulla Medical College, and Mitford Hospital. After exclusion total of 72 patients were included in this study, of which 24 had acute inferior MI with RV involvement diagnosed by ≥ 1mm ST-segment elevation in V3R-V5R of right-sided ECG (group-I) and 48 had acute inferior MI without RV involvement (group-II). All patients underwent echocardiography within 24 hours of admission. The study revealed that RV MPI was significantly increased (0.57± 0.13) in RVMI patients compared to IMI without RVMI (0.24± 0.12). MPI detected RVMI in 08 patients (0.45± 0.09) who did not have ECG findings of RVMI (Group-II). Repeat MPI estimation after 05 days in 21 RVMI (Group-I) and 08 isolated IMI (Group-II) patients who had RVMPI > 0.30showed dramatic reduction of MPI (0.19± 0.07 and 0.22±0.09), respectively. RV MPI ≥ 0.30 has high sensitivity (100%) and specificity (89%) for the diagnosis of RVMI in the presence of acute IMI. The study recommended that MPI may be a new non-invasive echocardiographic gold standard tool in diagnosing acute RVMI and also assessment of right ventricular function in acute inferior myocardial infarction with high sensitivity and specificity. MPI changes can be serially followed in acute RVMI patients to assess changes in RV function. TAJ 2022; 35: No-1: 17-24

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The evaluation of right ventricular function in acute myocardial infarction by xenon-133

Cited by 6 publications

References 0 publications

Qrs-Complex Fragmentations and Right Ventricular Infarction in the Presence of Inferior Infarction with Triple-Vessels Disease; Bad Initials but a Good Outcome

Qrs-Complex Fragmentations and Right Ventricular Infarction in the Presence of Inferior Infarction with Triple-Vessels Disease; Bad Initials but a Good Outcome

Right Ventricular Infarction in Patients with Inferior Wall Myocardial Infarction and its Association with Various Risk Factors

Sensitivity and Specificity of Myocardial Performance Indexing Assessing Acute Right Ventricular Infarction

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