Are patients with Covid-19 at risk of long-term chronic kidney disease?

Background: The relationship between Coronavirus Disease 2019 (COVID-19) and acute kidney injury (AKI) is well-established. However, a comprehensive evaluation of kidney outcomes in the long-term course of COVID-19 is not yet been performed. The aim of this study is to investigate whether chronic kidney disease (CKD) develops within six months after hospital discharge in COVID-19 patients who did not have kidney damage at the time of admission to the hospital. Patients and Methods: This single-center retrospective study investigated a total of 1008 participants selected from 7500 COVID-19 patients with real-time reverse transcription-polymerase chain reaction (RT-PCR) positivity. All patients had mild/moderate or severe COVID-19. Patients were randomly selected from inpatient and outpatient settings. Critical COVID-19 patients were not included. Results: The mean age of the patients was 56.57 ± 16.30 years, and 69.9% of them were male. The comorbidity percentages of the participants were as follows; 19.5% coronary artery disease (CAD), 28.6% diabetes mellitus (DM), 36.2% hypertension (HT), 3.1% cerebrovascular obstruction (CVO), 1.7% malignancy, 2.6% chronic obstructive pulmonary disease (COPD), 9.4% asthma, % 1.7 dementia, 9.9% hyperlipidaemia, and 1.7% hepatitis B virus (HBV). Kidney function tests of these patients at first admission and 6 months later were compared to reveal the relationship between COVID-19 and CKD. Serum glucose, sodium estimated glomerular filtration rate (eGFR), and uric acid levels were found to be high in the post-COVID-19 period (P = 0.001). However, there were a decrease in serum albumin, potassium, alanine aminotransferase (ALT), C-reactive protein (CRP), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and gamma-glutamyl transferase (GGT) levels (P = 0.001). The difference between the first measurement of serum urea and creatinine (Cr) levels and the measurement 6 months later was not statistically significant (P = 0.102 and P = 0.300, respectively). Conclusions: Those who survived the mild/moderate and severe clinical manifestations of COVID-19 did not exhibit any risk of kidney outcomes after the acute phase of the disease, suggesting that the kidney can protect itself over a long period of time.

Healthcare professionals' beliefs regarding influenza vaccination: What has COVID-19 changed?

Background: Influenza poses a potential public health threat among healthcare professionals since an infected healthcare professional can spread the virus to patients at higher risk as well as his/her own family members and colleagues. Annual influenza vaccination is the most effective way to protect HCPs. Aim: This study was conducted to determine whether demand for and beliefs about influenza vaccination have changed among healthcare professionals in the COVID-19 era and the factors that might have influenced them in the early phase of the pandemic when COVID-19 vaccines were eagerly awaited. Patients and Methods: This observational descriptive study was conducted between November 16, and December 15, 2020. A total of 317 healthcare professionals completed an online survey. Bivariate analysis and binary logistic regression analysis were performed. Results: Nineteen (6.0%) healthcare professionals were regularly vaccinated against influenza every year, and 199 (62.8%) had never been vaccinated. During the 2019-2020 season, 30 (9.5%) participants had been vaccinated and the proportion desiring to be vaccinated against influenza during the 2020-2021 season was 49.8% (n = 158). The results revealed that those with chronic diseases, those who believed they had adequate information about influenza vaccination and those who believed healthcare professionals should be vaccinated against influenza regularly every year, respectively, had 3.5 times, 4.7 times, and 11 times higher vaccination rates. Conclusion: Although the proportion of healthcare professionals with the intention to be vaccinated for influenza increased with the COVID-19 pandemic, it is still not high enough. Influenza vaccination rates should be promoted by in-service training programs.

Relationship between acute kidney injury requiring renal replacement treatment and mortality in patients with COVID-19.

Background: It has been reported that the most affected organ by the coronavirus disease 2019 (COVID-19) is the lung, closely followed by the kidney. Aim: Over the course of the COVID-19, the factors affecting mortality in acute kidney injury requiring renal replacement therapy (AKI-RRRT) have not been known. This study was conducted in order to shed light on this issue. Patients and Methods: There were 64 patients in total. Subjects were divided into two groups. Group 1 consisted of a control group that comprised 33 subjects who did not have AKI during the time in which they were infected with COVID-19. Group 2 was COVID-19 related AKI requiring renal replacement therapy (COVID-19 AKI-RRRT), which included 31 subjects who were exposed to AKI-RRRT. Results: In Group 2, 27 (87%) patients died and 4 (13%) patients were recovered. The predominance of comorbidity and presence of more than one additional disease (p < 0.05), the excessive number of inpatients in intensive care unit (ICU) (p < 0.05), high mortality rates (p < 0.05), advanced age (p < 0.05), and long hospitalization periods (p < 0.05) were evident in Group 2. Serum levels of variables such as white blood cells (WBC), neutrophils, C-reactive protein (CRP), procalcitonin (PCT), ferritin, D-dimer, glucose, lactate dehydrogenase (LDH), and prothrombin time (PT) were high for patients in the Group 2 (p < 0.05) group. However, serum levels of lymphocyte, hemoglobin (HGB), and albumin were low. Conclusions: It can be argued that COVID-19 AKI-RRRT is associated with higher mortality.

[Decreased Heart Rate Variability in Sickle Cell Anemia as Effect of Pulmonary Arterial Hypertension].

Decreased heart rate variability (HRV) is associated with increased mortality risk in various diseases. The objective of this investigation:to study HRV in patients with sickle cell anemia (SCA) and to assess the effect of pulmonary arterial hypertension (PAH) on HRV in these patients. Materials and methods. HRV registration and Doppler echocardiographic assessment of systolic pulmonary arterial pressure (PAP) was carried out in 61 stable patients with SCA and 24 healthy subjects. Results. Low frequency power (LFP) and high frequency power (HFP) were decreased in SCA patients compared to healthy subjects. Among SCA patients, PAH patients had lower  LFP and HFP than patients without PAH. In SCA patients, systolic PAP showed significant negative correlation with LFP and HFP. Conclusion. HRV is significantly decreased in SCA patients, especially in those with PAH. HRV may be particularly useful in early detection of PAH patients who may have worse prognosis and higher mortality risk.

Myocardial perfusion is preserved in patients with psoriasis without clinically evident cardiovascular disease.

BACKGROUND: Psoriasis is associated with a premature atherosclerosis due to the chronic inflammatory process. To evaluate the effect of disease process on myocardial perfusion, we planned to perform 99mTc-MIBI myocardial perfusion single photon emission computed tomography (SPECT) in patients with psoriasis. METHODS: The study group consisted of 28 psoriasis patients (17 men, 11 women), aged 18-76 years, and mean age 41.2 +/- 14.1 years. The patients were selected among those who were older than 18 years and longer than 10 years of disease duration with more than two times of systemic treatment. All patients underwent 99mTc-MIBI myocardial perfusion SPECT with the same day protocol. RESULTS: We detected various risk factors including smoking habits in 7, family history of cardiovascular disease in 4, hypertension in 1, hyperlipidemia in 9 patients. We completed myocardial perfusion SPECT for each patient and found normal perfusion pattern in SPECT images. CONCLUSION: We detected that myocardial perfusion is preserved in the patients with psoriasis. The majority of acute heart attacks are caused by noncritical coronary stenosis and this may be an explanation for increased cardiovascular risk in these patients despite normal coronary perfusion.

Association of left ventricular diastolic function abnormalities with aortic elastic properties in asymptomatic patients with type 2 diabetes mellitus. A tissue doppler echocardiographic study.

BACKGROUND: The aim of this study was to investigate the association between the aortic elastic properties and the left ventricular diastolic function measured by tissue Doppler echocardiography (TDE) in asymptomatic type 2 diabetes mellitus. METHODS: Fifty-seven asymptomatic patients with type 2 diabetes (33 women, mean age: 49 +/- 6 years) and 25 healthy control subjects (19 women, mean age: 46 +/- 7 years) were included in the present study. Diastolic filling indices were measured by conventional (CE) and tissue Doppler echocardiography. The aortic elastic properties [Aortic stiffness index (ASI), aortic distensibility and strain] were measured as previous definition. RESULTS: Compared with control subjects, the ratio of LV diastolic abnormalities measured by CE and TDE were found higher in patients with type 2 diabetes (36% and 73.6%, p = 0.001, respectively, and 52% and 89.4%, p < 0.001, for septal annulus; 48% and 89.4%, p < 0.001 for septal basal respectively). The ASI was significantly higher (p < 0.001), aortic distensibility and aortic strain were also significantly lower in patients with type 2 diabetes than control subjects (p < 0.001 and p < 0.001 respectively). In the regression analysis, Ao distensibility was correlated to age (beta = -0.299, p = 0.004), septal basal Em/Am ratio (beta =0.543, p < 0.001) and HDL-cholesterol (beta = 0.192, p = 0.039). ASI was also correlated only to age (beta = 0.255, p = 0.044), the presence of diabetes mellitus (beta = 0.304, p = 0.009), mitral A wave (beta = 0.322, p = 0.013) and mitral annulus Em wave (beta = -0.505, p < 0.001). CONCLUSION: The aortic elastic function is impaired in asymptomatic patients with type 2 diabetes. Increased ASI and decreased Ao distensibility are closely associated with diastolic filling indices measured by CE and TDE.

High-altitude pulmonary hypertension: effects of captopril on pulmonary and systemic arterial pressures.

The purpose of investigation was the assessment of the effect of captopril on both systemic (Pa) and pulmonary arterial pressures (PPA) in patients with high-altitude pulmonary hypertension (HAPH). Seventeen patients (mean age 44 +/- 6.8 years) with HAPH and mild-to-moderate systemic arterial hypertension were included in the study. All the patients underwent right heart catheterization with measurements of systolic PPA (PPA,syst), mean PPA (PPA) and diastolic PPA (PPA,diast). After a 4 week placebo phase, patients with PPA,syst > 25 mm Hg, PPA > 15 mm Hg and systemic diastolic blood pressure (Pa,diast) > 100 mm Hg received captopril (50-75 mg at 08.00) for a period of 12 weeks. The statistical evaluation of the results were made using the Student's t-test. It was found that captopril significantly decreases PPA and Pa.

Effects of trimetazidine on heart rate variability and left ventricular systolic performance in patients with coronary artery disease after percutaneous transluminal angioplasty.

Fifty-one patients (mean age 51.6 +/- 7.1 years) with angiographically proven coronary artery disease (CAD) entered the study. In 26 patients (Group I), trimetazidine treatment started twenty-four hours after percutaneous transluminal coronary angioplasty (PTCA). Another 25 patients (Group II) without trimetazidine treatment were kept as controls. The groups were comparable by age, gender, risk factors of CAD, coronary anatomy, left ventricular performance, and heart rate variability indices at baseline state. Power spectral analysis of heart rate variability and two-dimensional and Doppler echocardiographic examinations were performed before PTCA, and twenty-four hours, ten days, thirty days, and three months after PTCA. A statistically significant improvement of left ventricular systolic performance (P < 0.001), augmentation of the parasympathetic band of heart rate variability (P < 0.001), and decline of P1/P2 ratio (P < 0.01) were evident in patients treated with trimetazidine, while no apparent changes were observed in controls. The intergroup analysis also showed marked difference between groups as recorded on the day 30 and month 3 of observation (P < 0.001). During follow-up period recurrences of angina pectoris and ischemia were registered in Group II, while no evidence of ischemia was discerned in Group I patients. In conclusion, trimetazidine modulates the autonomic control of heart rate, ie, reduces sympathetic overactivity and augments vagal influences, improves left ventricular contractility, and diminishes the clinical manifestations of ischemia in patients with CAD after PTCA.

[Rheolytic thrombectomy with AngioJet catheter during transluminal coronary revascularization in patients with acute myocardial infarction]. / Reoliticheskaia trombéktomiia kateterom AngioJet vo vremia transliuminal'noi koronarnoi revaskuliarizatsii u bol'nykh ostrym infarktom miokarda.

BACKGROUND: Although balloon angioplasty and stenting are effective in the treatment of acute myocardial infarction (M1), reduced coronary flow and distal embolization frequently complicate interventions when thrombus is present. Adjunctive treatment with mechanical thrombectomy devices was suggested to reduce these complications. METHODS: We evaluated immediate angiographic, in-hospital and 30-day follow-up clinical outcomes of 185 patients with acute MI and angiographically evident thrombus who were treated with AngioJet rheolytic thrombectomy followed by immediate definitive treatment. RESULTS: Procedural success (residual diameter stenosis <50% and thrombolysis in myocardial infarction [TIMI] flow >2 after final treatment) was 97%. Rheolytic thrombectomy success was achieved in 7% of patients. Subsequent definitive treatment included stenting in 67% and balloon angioplasty alone in 26% of patients. Final TIMI 3 flow was achieved in 89%. AngioJet treatment resulted in mean thrombus area reduction from 69.6 mm(2) at baseline to 17.3 mm(2) post-thrombectomy (p<0.001). Procedural complications included distal embolization (7.6%) and perforation (1.1%). Clinical success (procedure success without major in-hospital cardiac events) rate was 88%, in-hospital mortality - 7.0%. There were no further major adverse events during 30-day follow-up. CONCLUSION: Rheolytic thrombectomy can be performed safely and effectively in patients with acute MI, allowing for immediate definitive treatment of thrombus-containing lesions.

[Effectiveness of excimer laser coronary angioplasty in treatment of patients with in-stent restenosis]. / Effektivnost' éksimernoi lazernoi koronarnoi angioplastiki v lechenii bol'nykh s restenozom posle koronarnogo stentirovaniia.

In-stent restenosis (ISR), when treated with balloon angioplasty (PTCA) alone, has an angiographic recurrence rate of 30-85%. Ablating the hypertrophic neointimal tissue prior to PTCA is an attractive alternative, however late outcomes of such treatment have not been fully determined. This multicenter case control study assessed angiographic and clinical outcomes of 137 consecutive procedures in 125 patients treated for ISR with either PTCA alone (n = 58) or excimer laser assisted coronary angioplasty (ELCA, n = 67). Demographics were similar. Lesions selected for ELCA compared with those selected for \PTCA were longer (17.1+/-9.9 mm vs. 13.6+/-9.1 mm; p=0,034), more complex (ACC/AHA type C: 36,5% vs. 14,3%; p=0,006), and with reduced antegrade flow (TIMI flow < 3: 18,9% vs. 4,8%; p = 0,025). ELCA- and PTCA treated patients had similar rates of procedural success (98,5 and 98,3%, respectively, p=1,0), major clinical complications (3,0% and 8,6%; respectively, NS), major cardiac events at 1 year (37,3 and 46,6%. respectively, NS), and target lesion revascularization (32,8 and. 34,5%; respectively, NS). These data suggest that ELCA in patients with complex in-stent restenosis is as safe and effective as PTCA. Despite higher lesion complexity in ELCA-treated patients, no increase in event rates was observed.

[Immediate and long-term outcomes after "Ephesos" coronary stent implantation in patients with stable or unstable angina]. / Blizhaishie i otdalennye iskhody posle implantatsii koronarnogo stenta "Ephesos" u bol'nykh stabil'noi ili nestabil'noi stenokardiei.

AIM: An open non-randomized trial was initiated to assess clinical and angiographic results of using the coronary stent "Ephesos" in 457 patients with stable or unstable angina pectoris and native coronary affections. MATERIAL AND METHODS: 268 stents have been implanted in 231 patients with stable angina (SA) and 271 stents--in 226 patients with unstable angina (UA). 46% lesions were complicated. The length of stenosis was 12.9 +/- 6.7 mm in the group SA and 14.1 +/- 7.4 mm in the group UA, 30% stenoses were long. RESULTS: Successful stenting was stated in 99% without cases of acute thrombosis. Non-fatal myocardial infarction took place in hospital in 1.3% of SA patients and in 2.6% of UA patients. Incidence of cardiac complications (death, recurrent angina pectoris, myocardial infarction, restenosis, repeated revascularization) for 6-month follow-up was 15.6% in SA group and 18.1% in UA group. At angiographic control, the index of vascular diameter loss made up 0.22 +/- 0.2 in SA group and 0.3 +/- 0.27 in UA group. Incidence of restenosis was 12 and 14%, respectively. 18-month follow-up found no differences in frequency of complications: 21.6 and 22.6% in groups SA and UA, respectively. CONCLUSION: Implantation of the stent "Ephesos" is effective in prevention of thrombosis and restenosis in patients with stable or unstable angina pectoris at high risk of intervention.

Thromboembolism risk in patients with mitral stenosis.

A total of 168 consecutive patients with predominant rheumatic mitral stenosis were evaluated by transthoracic (TTE) and transesophageal echocardiography (TEE). Of the 168 patients, 35 had previous embolic events (group I) and 133 had no emboli (group II). A total of 77 (45.8%) patients had atrial fibrillation. The frequency of atrial fibrillation was higher in group I than group II (68.6% vs 39.8%, p < 0.001). The incidence of left atrial enlargement was greater in group I (p < 0.001). Mitral valve area was found to be smaller in group I compared to group II (p < 0.001). In group I 83.3% and 29.2% of the patients with atrial fibrillation had left atrial spontaneous echo contrast (SEC) and left atrial thrombus, respectively, and 72.7% of the patients with sinus rhythm had left atrial SEC. In group II 79.2% and 20.8% of the patients with atrial fibrillation had left atrial SEC and left atrial thrombus whereas 28.6% and 2.6% of the patients with sinus rhythm had left atrial SEC and left atrial thrombus, respectively. The incidence of left atrial thrombus was significantly different in those patients with compared to those without embolic events (20% vs 9.7%, p < 0.01). In groups I and II, 28 of 35 (80%) and 64 of 133 (48.1%) patients had left atrial SEC (p < 0.01). Patients with left atrial SEC had a greater left atrial size (p < 0.01) and smaller mitral valve area (p < 0.01). Left atrial size was normal in 2 patients with left atrial SEC and SEC was not found in 55 patients with enlarged left atrium. Multiple logistic regression analysis showed that atrial fibrillation, mitral valve area and left atrial enlargement were independent predictors of the SEC (p < 0.001) and left atrial SEC was the principal determinant of thromboembolism. These data suggest that regardless of rhythm and atrial size, left atrial SEC is a principal determinant of thromboembolic risk in mitral stenosis. TEE may be able to detect those patients with mitral stenosis at risk for emboli and guide appropriate therapy.

Relationship Between Components of Heart Rate Variability and Doppler Echocardiographic Indices of Left Ventricular Systolic Performance in Patients with Coronary Artery Disease

Decreased heart rate variability (HRV) has been reported as prognostic predictor in coronary artery disease population. The aim of the study was to assess the relationship between cardiac autonomic tone disturbances and the degree of left ventricular dysfunction, estimated by 2-dimensional and Doppler echocardiography, in patients with coronary artery disease. Forty patients with angiographically proven coronary artery disease and 15 age-and sex-matched healthy subjects were included into the study (Group I and II, respectively). Routine clinical examinations, electrocardiography, coronary angiography, and 2-dimensional and Doppler echocardiography with assessment of LV systolic performance were done in all the patients and control subjects. Cardiac autonomic function was assessed by means of frequency-domain analysis of heart rate variability. The powers of LF and HF bands (P1 and P2), their ratio (P1/P2), and the logarithmic expression of powers were measured. The patients (Group I) had lower values of parasympathetic band of HRV and higher sympathetic activity than the healthy population (Group II) (p < 0.0002 for P2 and p < 0.04 for P1/P2 ratio). A positive significant correlation was seen between parasympathetic band of HRV and ejection fraction (r = 0.61, p < 0.0001), and mean acceleration of aortal flow (r = 0.56, p < 0.0001), whereas P1/P2 ratio inversely and significantly correlated with the same parameters (r = -0.46, p < 0.002 and r = -0.41, p < 0.008).

Anaphylaxis in an infant caused by menthol-containing cologne

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