scholarly journals Isolated ST-Elevation Myocardial Infarction Involving Leads I and aVL: Angiographic and Electrocardiographic Correlations from a Tertiary Care Center

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Abhishek Singh ◽  
Sudhanshu Dwivedi ◽  
Akshyaya Pradhan ◽  
Varun S Narain ◽  
Rishi Sethi ◽  
...  

Background. Determining the infarct-related artery in STEMI during a coronary angiogram can be challenging due to the affliction of multiple vessels. Isolated STEMI involving only EKG leads I and aVL is infrequent. Localization of infarct-related artery based on EKG findings has not been previously done in this subset. Methods. All consecutive de novo acute coronary syndrome (ACS) patients admitted to coronary care unit with ST elevations involving only leads I and aVL were screened for enrollment. Patients with ST elevation in any additional lead and those who refused a coronary angiogram were excluded. Subsequently, a coronary angiogram was done as part of primary PCI or a pharmacoinvasive approach to identify the infract-related artery (IRA). IRA was defined by characteristics of lesion, flow of blood through stenosis, and presence of intracoronary thrombus. Coronary angiogram was interpreted by two independent observers blinded to the EKG findings. ST changes in inferior and precordial leads were analyzed to find ECG predictors of the culprit artery. Results. A total of 54 eligible patients of ACS were included in the study. The first major diagonal (D1) was the most frequent IRA in 35.2% followed by left circumflex-obtuse marginal (LCX-OM11) in 29.6%, left anterior descending (LAD) in 20.4%, and ramus intermedius (RI) in 14.8%. Out of total patients with ST depression in lead V2, the LCX-OM11 group was IRA in 50% cases while the RI, D1, and LAD groups accounted for 31.8%, 13.6%, and 4.5%, respectively ( p < 0.001 ). Similarly, LCX-OM1 was the most frequent IRA subjects with ST depressions in leads V1 and V3 (44.4%; p = 0.010 and 46.2%; p = 0.003 , resp.). On the contrary, in patients with ST depression in lead III, LAD and D1 were the most frequent IRA as compared to LCX-OM1 and RI though statistical significance was not attained ( p = 0.857 for lead III). ST-segment depression in lead V2 had a positive predictive value of 60% and a negative predictive value of 100% for LCX-OM1 as IRA. Similarly, ST-segment depression in lead V2 had a positive predictive value of 20% and a negative predictive value of 100% for the RI group. Conclusions. In patients presenting with isolated ST elevation in leads I and aVL, the most frequent IRA on angiogram was first diagonal. ST depressions in EKG leads V1–V3 were the most common predictor of LCX–OM1 while those in inferior leads indicated LAD-D1 as the IRA.

2015 ◽  
Vol 12 (1) ◽  
pp. 5-9 ◽  
Author(s):  
Madhu Gupta ◽  
Maheswar Prasad Kurmi ◽  
Bhoj Raj Sharma ◽  
Liping Chen ◽  
Ravi Shahi ◽  
...  

Background and Aims: The main objective of this study is to analyze between left circumflex artery and right coronary artery as a presumptive predictor of a culprit artery in patients with an acute inferior wall ST elevation myocardial infarction according to ST segment change in lead aVR. Methods: This study included 145 consecutive patients who presented with an inferior wall ST elevation myocardial infarction and underwent coronary angiography. Clinical and angiographic findings were compared between patients with and without aVR depression ≥ 0. 1mV. Results: The sensitivity and specificity of ST segment depression in lead aVR to predict left circumflex artery as the culprit artery were 69% and 85%, respectively, and the positive predictive value and negative predictive value to predict left circumflex artery as the culprit arteries were 66% and 87%, respectively. Conclusion: Our study supports, the presence of ST segment depression in lead aVR is associated with good specificity and negative predictive value and modest sensitivity and positive predictive value to determine left circumflex artery as an infarct related artery in an acute ST segment elevation inferior wall myocardial infarction.DOI: http://dx.doi.org/10.3126/njh.v12i1.12324 Nepalese Heart Journal Vol.12(1) 2015: 5-9  


Author(s):  
Amita Ray ◽  
Arun Gopi ◽  
Sujoy Ray

Background: A model which takes into account several relevant factors and gives the probability of C-Section in a woman would have the advantage of preparing for such an event. The identification of women at high risk of C-Section (>50% risk) would provide the opportunity for understanding risks involved in pursuing a vaginal delivery whereas if the risk of C-Section was less (<50%) it would prove useful in counselling for a vaginal delivery. We used the WHO C-Model with the aim to find the predictability of this model in our facility and the overuse of C-section in the 10 Robson’s Groups.Methods: A retrospective observational study in which all women who gave birth at our hospital from June 2016 to May 2017 were included and C-Section probability was calculated using the C-Model. Comparison with the actual mode of delivery was done to find the sensitivity, specificity, positive and negative predictive value of the model and the overuse of C-Section in the Robson’s Groups.Results: Out of the 314 C-Sections done only 45 women had a >50% probability, giving the model a sensitivity of 14.33%, specificity of 98.8%, positive predictive value of 90% and negative predictive value of 60.56%. Robson’s Groups 5 and 3 demonstrated the greatest overuse of C-Sections.Conclusions: The WHO Model when applied to this centre showed a high positive predictive value for C-Sections but the negative predictive value or the ability to correctly predict a vaginal delivery was much less.


Author(s):  
Shazia Ashraf Khan ◽  
Shaista Rahi ◽  
Nahida Khan

Background: Adnexal masses present a diagnostic and therapeutic dilemma across age-groups. This study aimed to evaluate the performance of cancer antigen-125 (CA-125) in distinguishing between benign and malignant adnexal masses.Methods: This was a prospective, observational, single tertiary-care center study, done in North India from January, 2011 till December, 2012. Serum CA-125 levels was obtained preoperatively in consecutive patients presenting with ultrasonography confirmed adnexal masses. The cut-off value between benign and malignant was taken as 35 IU/ml. Histopathological diagnosis was obtained in all patients.Results: A total of 126 patients presented with adnexal masses, of which 100 were enrolled (mean age: 37.5±14.4 years, range: 18-80 years). Most of the masses were benign 81% (malignant=19%). Dermoid cyst (25.9%) and endometriomas (21%) were the most common benign masses. Serous (21%) and mucinous cystadeno-carcinoma (15.8%) were the most common malignant masses, more often seen in elderly, married, parous and post-menopausal patients. Mean CA-125 levels were significantly higher in malignant masses (257.30 [105.68-408.92] versus 19.26 [16.53-22.00], p<0.001). Overall sensitivity, specificity, positive predictive value, negative predictive value and accuracy of CA-125 for diagnosing malignant adnexal mass was 94.7%, 87.65%, 64.28%, 98.6%, and 88.91% respectively. The same was 100%, 85.1%, 54.5%, 100%, 87.3% in premenopausal and 85.7%, 100%, 100%, 93.3%, 95.2% in postmenopausal women respectively.Conclusion: Benign masses form the bulk of the adnexal masses in all age groups. CA-125 levels has high sensitivity and negative predictive value in premenopausal patients while as high specificity and positive predictive value in postmenopausal patients.


1997 ◽  
Vol 12 (2) ◽  
pp. 70-73 ◽  
Author(s):  
Robert Hill ◽  
Michael Heller ◽  
Alexander Rosenau ◽  
Scott Melanson ◽  
David Pronchik ◽  
...  

AbstractObjective:To determine the reliability of ST-segment interpretation by paramedics from lead-II rhythm strips obtained in the prehospital setting.Design:Prospective, blinded study of 127 patients transported by an urban/rural emergency medical services system with complaints consistent with ischemic heart disease.Methods:Emergency department physicians asked emergency medical technician-paramedics (EMT-P) via radio to evaluate ST-segments for elevation or depression and grade it as “mild,” “moderate,” or “severe.” Then, this rhythm strip was interpreted blindly by emergency physicians who also interpreted the lead-II obtained from a 12-lead electrocardiogram (ECG) obtained in the emergency department (ED). The field interpretation was compared with the subsequent readings and the final in-patient diagnosis using positive predictive value (PPV), negative predictive value (NPV), and the Kappa statistic. Markedly discrepant interpretations were analyzed separately.Results:Using physician interpretation as the reference standard, paramedic interpretation of the lead-II ST-segments obtained in the prehospital setting was correct (within ±1 gradation) in 113 out of 127 total cases (89%). Of 105 patients for whom final hospital diagnosis was available, the ST-segment on the rhythm strip obtained in the prehospital setting, had a positive predictive value of 74% and a negative predictive value of 85% for myocardial ischemia or myocardial infarction (MI) (p <0.001, Kappa = 0.59). Discordant interpretations between the paramedics and emergency physicians often were related to a basic misunderstanding of rhythm strip morphology.Conclusion:Field interpretation of ST-segments by paramedics is fairly accurate as judged both by emergency physicians and correlation with final patient outcome, but its clinical utility is unproved. A small but clinically significant number of outliers, consisting of markedly discrepant false positives, reflects paramedic uncertainty in identifying the deviations of the ST-segment.


2020 ◽  
Vol 5 (1) ◽  
pp. e000438
Author(s):  
Samjhana Basnet ◽  
Sanu Krishna Shrestha ◽  
Alok Pradhan ◽  
Roshana Shrestha ◽  
Anmol Purna Shrestha ◽  
...  

BackgroundThoracoabdominal trauma presents a diagnostic challenge for the emergency physician. The introduction of bedside ultrasonography (USG) provides a screening tool to detect hemoperitoneum, hemothorax, pneumothorax and pericardial effusion in torso injuries.AimTo evaluate the accuracy of extended focused assessment with sonography for trauma (EFAST) for chest and abdominal injuries performed by first responders in a tertiary care hospital of Nepal.MethodsThis was a prospective study including all trauma patients who obtained either an Injury Severity Score ≥15 or direct trauma to the trunk in 1 year period in the emergency department (ED) of Dhulikhel Hospital-Kathmandu University Hospital. The results of the EFAST were then compared with contrast-enhanced CT (CECT), radiology ultrasound (USG)/chest X-ray, or intraoperative findings when the EFAST was positive. The negative EFAST cases were observed for a minimum of 4 hours in the ED. Descriptive statistics and sensitivity, specificity, positive predictive value, negative predictive value and accuracy were calculated.ResultsOut of 267 cases, 261 patients underwent an EFAST examination. The sensitivity and specificity were 94.8% and 99.5%, respectively. The negative predictive value was 98.53% whereas the positive predictive value was 98.21%. The overall accuracy was 99.4%.ConclusionThe results of this study suggest that EFAST examination performed by first-line healthcare providers is a useful method for assessment of thoracic and abdominal injuries. EFAST was found to have a high specificity (99.5%) and positive predictive value (98.21%) which indicates that it is an effective technique for detecting intra-abdominal or thoracic injuries. However, the effectiveness of EFAST is limited by its being operator dependent, and thereby human error. For negative EFAST cases, we recommend a monitoring period of at least 4 hours, serial fast scan, or further investigation through other methods such as a CECT.Level of evidenceLevel I


Author(s):  
Mridu Sinha ◽  
Jai Kishan Goel ◽  
Shashi Bala Arya ◽  
Jayanti Kar ◽  
Bahar Kohli ◽  
...  

ABSTRACT Objective Comparison of papanicolaou (pap) smear and colposcopy in detection of premalignant lesions of cervix. Materials and methods A prospective clinical study was conducted in a tertiary care referral institute in 100 symptomatic, sexually active women of 20 to 60 years. All women were subjected to pap smear, colposcopy and cervical biopsy to confirm the diagnosis. Results Out of 49 positive on pap smear, 24 were true positives and 25 were false positives. Out of 51 negative pap smear findings, 45 were true negatives and 6 were false negatives. Thirty percent women had positive histopathology and colposcopic findings. Forty percent women had normal colposcopy with negative histopathology whereas 30% had positive colposcopic findings but negative histopathology. Nineteen percent of women with negative cytology were positive on colposcopy and histopathology. Conclusion Pap smear had a sensitivity of 80% and a specificity of 64.29% with positive predictive value of 48.98% and negative predictive value of 88.24% while sensitivity and specificity of colposcopy were 100 and 57.14% respectively and positive predictive value and negative predictive value of colposcopy were found to be 50 and 100% respectively. How to cite this article Kohli B, Arya SB, Goel JK, Sinha M, Kar J, Tapasvi I. Comparison of Pap Smear and Colposcopy in Detection of Premalignant Lesions of Cervix. J South Asian Feder Menopause Soc 2014;2(1):5-8.


2021 ◽  
Vol 2 (2) ◽  
pp. 44-49
Author(s):  
Aditya Mahaseth ◽  
Bikas Nepal ◽  
Biplave Karki ◽  
Jeet Ghimire ◽  
Naveen Pandey ◽  
...  

BACKGROUND:  Lead avR is a valuable but mostly ignored lead in clinical electrocardiography. Recently, ST-segment depression in lead aVR during an inferior wall myocardial infarction has been suggested as a predictor of LCX artery involvement. METHODS: This study was a single centre cross sectional observational study done in BPKIHS, Dharan from February 2018 to January 2020. Patients presenting to the OPD or emergency room of BPKIHS diagnosed as acute inferior wall myocardial infarction based on clinical symptoms, ECG and/or Cardiac tropinin I levels, and planned for coronary angiography, meeting the inclusion and exclusion criterias were included. RESULTS: Among 134 cases, male:female ratio was 1.3:1. Overall, 38 patients (28.4%) were found to have aVR depression and 96 patients (71.6%) were without aVR depression. The culprit artery was found to be the right coronary artery in 95 patients (70.9%), the LCx in 39 patients (29.1%). The sensitivity and specificity of ST-segment depression in lead aVR for LCx as the culprit artery were 92.3% and 97.9% respectively. Positive predictive and Negative predictive value for LCx as the culprit arteries were 94.74% and 96.87%. The sensitivity, specificity, positive predictive value and negative predictive value for RCA as the culprit artery were 97.89%, 92.3%, 96.89% and 94.73% respectively. CONCLUSION: Significant ST depression in aVR is associated with a higher specificity and good sensitivity for LCX lesions, the ST changes in this lead should be carefully examined in all patients who are suspected of having inferior wall myocardial infarction.


2013 ◽  
Vol 5 (3) ◽  
pp. 135-138
Author(s):  
Shilpa Nitin Chaudhari ◽  
Poorva Niteen Deshpande ◽  
Priyanka Rohit Gupta ◽  
Tanvi Rajeev Warty ◽  
Devika Bharat Bhikane

ABSTRACT Objective The aim of this study was to evaluate the scoring systems to differentiate between benign and malignant adnexal masses. Methods It is a prospective study carried on 60 women at a tertiary care center. Transabdominal ultrasonography and color Doppler was done and women were followed till resolution of symptoms. Gold standard for diagnosis of adenexal masses was histopathological examination of specimen or fluid cytology. Results Efficacy of Sassone scoring system for diagnosing malignant tumors sensitivity 75%, specificity 90.91%, positive predictive value 75%, negative predictive value 90.91% and an accuracy of 86.67%. Efficacy of De Priest scoring system sensitivity 66.67%, specificity 100%, positive predictive value 100%, negative predictive value 92.31% and an accuracy of 93.33%. Efficacy of Ferrazzi scoring system sensitivity 75%, specificity 100%, positive predictive value 100%, negative predictive value 91.67%, and an accuracy of 93.33%. Efficacy of alcazar scoring system sensitivity 100%, specificity 100%, Positive predictive value 100%, negative predictive value 100%, and an accuracy of 100%. Conclusion Alcazar scoring system was found to be more sensitive and specific than other available scoring systems. How to cite this article Chaudhari SN, Deshpande PN, Gupta PR, Warty TR, Bhikane DB. Evaluation of the Scoring Systems to Differentiate between Benign and Malignant Adnexal Masses in a Tertiary Care Center, Pune. J South Asian Feder Obst Gynae 2013;5(3):135-138.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Boeddinghaus ◽  
T Nestelberger ◽  
P Lopez-Ayala ◽  
P.D Ratmann ◽  
D Wussler ◽  
...  

Abstract Background The European Society of Cardiology (ESC) recommends the clinical use of the 0/1h-algorithms in patients with suspected acute coronary syndrome (ACS) to rule-out or rule-in non-ST elevation myocardial infarction (NSTEMI). However, the diagnostic performance of the ESC 0/1h-algorithms was only validated in patients presenting within 12 hours after chest pain onset (=early presenters) to the emergency department (ED). To this date, evidence regarding their performance in patients with chest pain onset &gt;12h (=late presenters) is lacking. Purpose To evaluate the diagnostic performance of the ESC 0/1h-algorithms in late presenters. Methods We prospectively enrolled patients presenting to the ED with symptoms suggestive of ACS such as acute chest discomfort. Two independent cardiologists adjudicated the final diagnoses based on all available clinical information including serial hs-cTn concentrations, follow-up information and cardiac imaging. Hs-cTnT/I concentrations at 0h and 1h were measured in a blinded fashion. The primary diagnostic endpoint was the diagnostic performance of the hs-cTnT/I ESC 0/1h-algorithms in patients presenting late after chest pain onset compared to those presenting early. Diagnostic performance was quantified by safety of rule-out (sensitivity and negative predictive value), accuracy of rule-in (specificity and positive predictive value), and efficacy (proportion of patients) classified as rule-out or rule-in within 1 hour after presentation to the ED. The primary prognostic endpoint was all-cause mortality after 30-days and two-years in patients in whom NSTEMI was ruled-out by the ESC 0/1h-algorithms. Results Among 4733 patients, 308/4733 (7%) presented late to the ED. The ESC hs-cTnT 0/1h-algorithm ruled-out 185/308 (60%) of late presenters with a sensitivity of 100% (95% CI, 93.7–100) and a negative predictive value (NPV) of 100% (95% CI, 98.0–100). Sixty-one of 308 (20%) were ruled-in with a specificity of 95.2 (95% CI, 91.8–97.2) and a positive predictive value (PPV) of 80.3% (95% CI, 68.7–88.4). The remaining 62/308 (20%) were classified as observe with a NSTEMI prevalence of 13%. In comparison, 59% of early presenters were ruled-out (sensitivity 99.3% [95% CI, 98.4–99.7]; NPV 99.8 [99.5–99.9]), 17% were ruled-in (specificity 96.2 [95% CI, 95.5–96.8]; PPV 81.4 [95% CI, 78.4–84.0]), and 45% were classified as observe. Late presenters in whom NSTEMI was ruled-out had 30-day and two-year survival rates of 100% and 98.2%, respectively. Similar findings were made for the ESC hs-cTnI 0/1h-algorithm. Conclusion The ESC hs-cTnT/I algorithms also provide excellent diagnostic performance for early triage and specifically safe rule-out of NSTEMI in patients presenting late after chest pain onset to the ED. Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): Swiss Heart Foundation, Swiss National Science Foundation


Author(s):  
Kamran Amir Khan ◽  
Sameed Ullah Qureshi ◽  
Shumaila Ehtisham ◽  
Admin

Abstract Objective: To determine and compare the performance of TUBEX® TF, widal test & blood culture in the diagnosis of enteric fever. Methods: After approving with the ethical committee, we retrospectively identified patients presented with fever at Northwest General Hospital and Research Centre. Typhidot, Widal test and blood culture was performed as part of their evaluation from January 2018 to December 2018. SPSS 16 was used for data analysis. Results: Of the 241 patients, blood culture was positive for salmonella in 68(28.21%) and negative in 173(71.79%). In the culture positive group, TUBEX® TF was positive in 29(42.64%) and negative in 39(57.36%). Of these culture positive patients, Widal was positive in 25(36.76%) and negative in 43(63.24%). In patients with negative culture, TUBEX® TF was positive in 58(37.66%) and negative in 96(62.34%), Widal was positive in 77(44.5%) and negative in 96(55.5%). The positive predictive value of TUBEX® TF was 33.33% and the negative predictive value was 71.77%. The sensitivity of TUBEX® TF was 42.65% while specificity was 62.34%. The positive predictive value of Widal was 24.51% and the negative predictive value was 69.06%. The sensitivity of Widal was 36.76% while specificity was 55.49%. Conclusion: Sensitivity, specificity, positive predictive value and negative predictive value of TUBEX® TF and Widal test is very low as compared to blood culture. Keywords: Enteric Fever, TUBEX® TF, Widal, Continuous...


Sign in / Sign up

Export Citation Format

Share Document