Heart sounds

Heart sounds Two normally heard heart sounds are the first heart sound (S1) and second heart sound (S2). Second heart sound has two components – aortic (A2) and pulmonary (P2). Normal A2 is heard in all auscultatory areas while normal P2 is heard only in the pulmonary area. If it is heard at the apex, it can be considered as loud P2. Normal split of second heart sound closes in expiration and is audible only in inspiration. If it is audible in both inspiration and expiration, it is called wide split. If the split increases in expiration and closes in inspiration, it is paradoxical split. Wide fixed split is audible in both inspiration and expiration, without any change in the A2-P2 interval. Third (S3) and fourth (S4) heart sounds are usually heard in pathological conditions. But an S3 may be heard in normal children and in pregnancy. An S4 may be heard in the elderly. First heart sound: First heart sound is a high pitched sound and is heard best with the diaphragm of the stethoscope. It is best heard at the cardiac apex. First heart sound is timed in relation to the carotid pulse as it occurs at the onset of systole. Interval between the first and second heart sounds constitutes the clinical systole and that from second heart sound to the next S1 the clinical diastole. A loud S1 is heard in mitral stenosis while a soft S1 is heard in mitral regurgitation. Intensity of S1 decreases with decreasing left ventricular systolic function. In severe calcific mitral stenosis, ...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: HBC Paradoxical splitting of second heart sound sail sound Wide fixed split wide split Source Type: blogs

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Publication date: 15 February 2021Source: Journal of Hazardous Materials, Volume 404, Part BAuthor(s): Jinsoo Lee, Seong-Jin Choi, Ji-Seong Jeong, Sang Yun Kim, Sang-Hyub Lee, Mi Jin Yang, Seung-Jin Lee, Young-Jun Shin, Kyuhong Lee, Eun Ju Jeong, Sang-Yoon Nam, Wook-Joon Yu
Source: Journal of Hazardous Materials - Category: Environmental Health Source Type: research
Authors: Bergland OU, Søraas CL, Larstorp ACK, Halvorsen LV, Hjørnholm U, Hoffman P, Høieggen A, Fadl Elmula FEM Abstract PURPOSE: The blood pressure (BP) lowering effect of renal sympathetic denervation (RDN) in treatment-resistant hypertension shows variation amongst the existing randomised studies. The long-term efficacy and safety of RDN require further investigation. For the first time, we report BP changes and safety up to 7 years after RDN, compared to drug adjustment in the randomised Oslo RDN study. MATERIALS AND METHODS: Patients with treatment-resistant hypertension, defined...
Source: Blood Pressure - Category: Hematology Tags: Blood Press Source Type: research
Authors: Zhang W, Xu JZ, Lu XH, Li H, Wang D, Wang JG Abstract PURPOSE: We hypothesise that dietary sodium intake interacts with serum uric acid to influence blood pressure (BP) in children and adolescents. In the present study, we investigated ambulatory BP in relation to hyperuricaemia, dietary sodium intake and their interaction in children and adolescents with hypertension. MATERIALS AND METHODS:  A total of 616 study participants were 10-24 years old and had primary hypertension diagnosed after admission in a specialised inpatient ward. Ambulatory BP monitoring was performed during hospitalisat...
Source: Blood Pressure - Category: Hematology Tags: Blood Press Source Type: research
Conclusions: This review results revealed a low utilization of postnatal care service. Antenatal care service utilization has a positive effect on postnatal care service utilization. Policymakers and programmers better considered more antenatal care service use as one strategy of enhancing the utilization of postnatal care service. PMID: 33029402 [PubMed - in process]
Source: Journal of Pregnancy - Category: OBGYN Tags: J Pregnancy Source Type: research
Authors: Debelew GT Abstract Despite several efforts globally, the problem of perinatal mortality remained an unsolved agenda. As a result, it continued to be an essential part of the third sustainable development goals to end preventable child deaths by 2030. With a rate of 33 per 1000 births, Ethiopia has the highest level of perinatal mortality in the world. Thus, determining the magnitude and identifying the determinants are very crucial for evidence-based interventions. A community-based longitudinal study was conducted in Southwest Ethiopia among 3474 pregnant women to estimate the magnitude of perinatal mort...
Source: Journal of Pregnancy - Category: OBGYN Tags: J Pregnancy Source Type: research
This study was aimed at assessing the magnitude of induced abortion and associated factors among students in Hawassa University, southern region, Ethiopia, 2019. Methods: An institutional-based cross-sectional study was conducted among a total of 422 students selected on the bases of a probability simple random sampling method. A pretested structured questionnaire was used to collect data. Analysis was made with SPSS 20. Descriptive summary and inferential statistics (binary logistic regression) were used with a 95% CI and P value of less than 5% as a level of significance. Findings were presented in tables, figure, an...
Source: Journal of Pregnancy - Category: OBGYN Tags: J Pregnancy Source Type: research
Conclusions: (1) Data at our center suggests at least a regional implementation gap in GBS screening and IAP. (2) The decline in the resistance rate ofE. coli for all antimicrobial substances might indicate that the reduction of prenatal antibiotics use is beneficial and that neonatal antibiotic stewardship programs should include pregnant women as well.What is Known:• GBS screening and intrapartum antibiotic prophylaxis led to a 32%-reduction in GBS disease in Germany with a 0.75 (92:122) ratio of early-onset disease to late-onset disease in 2009–2010.• Prenatal antibiotic use might increase the risk of E....
Source: European Journal of Pediatrics - Category: Pediatrics Source Type: research
In this study, we explored its health effects on the female offspring of mice that had been exposed during pregnancy. We found that exposure of pregnant mice to nitenpyram resulted in decreased levels of serum triglycerides, total cholesterol, and glucose in female offspring, and additional research uncovered gut microbiota disturbances, accompanied by abnormal fecal metabolic profiles. Based on Pearson correlation analysis, we found that decreased abundance of Lactobacillus may play the most critical role, and changes in gut bacterial purine metabolism, BCAAs metabolism, and the TCA cycle are all closely related to the ab...
Source: Chemosphere - Category: Chemistry Authors: Tags: Chemosphere Source Type: research
CONCLUSIONS: Neuro-ophthalmologic findings are mostly normal in patients with visual snow syndrome. Retinal or neurological diseases must be excluded as possible causes of visual snow. PMID: 33029971 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
CONCLUSIONS: Young adult IS patients in Korea exhibit low awareness and poor management of their risk factors. Although the short-term outcome was relatively favorable in those patients, having SLE was associated with unfavorable outcomes. More attention needs to be paid for improving awareness and controlling risk factors in this population. PMID: 33029967 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
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