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Corradi F, Bell M, De Rosa S. Kidney Doppler ultrasonography in critical care nephrology. Nephrol Dial Transplant 2024; 39:1416-1425. [PMID: 38697934 DOI: 10.1093/ndt/gfae103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Indexed: 05/05/2024] Open
Abstract
Color pulsed-wave Doppler ultrasound (CPWD-US) emerges as a pivotal tool in intensive care units (ICUs) for diagnosing acute kidney injury (AKI) swiftly and non-invasively. Its bedside accessibility allows for rapid assessments, making it a primary imaging modality for AKI characterization. Furthermore, CPWD-US serves as a guiding instrument for key diagnostic-interventional procedures such as renal needle biopsy and percutaneous nephrostomy, while also facilitating therapy response monitoring and AKI progression tracking. This review shifts focus towards the integration of renal ultrasound into ICU workflows, offering contemporary insights into its utilization through a diagnostic standard-oriented approach. By presenting a flow chart, this review aims to provide practical guidance on the appropriate use of point-of-care ultrasound in critical care scenarios, enhancing diagnostic precision, patient management and safety, albeit amidst a backdrop of limited evidence regarding long-term outcomes.
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Affiliation(s)
- Francesco Corradi
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy
| | - Max Bell
- Department of Pharmacology and Physiology, Karolinska Institutet, Stockholm, Sweden
- Department of Perioperative Medicine and Intensive Care (PMI), Karolinska University Hospital, Stockholm, Sweden
| | - Silvia De Rosa
- Centre for Medical Sciences - CISMed, University of Trento, Trento, Italy
- Anesthesia and Intensive Care, Santa Chiara Regional Hospital, APSS Trento, Italy
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Orso D, Peric D, Di Gioia CC, Comisso I, Bove T, Ban A, Fonda F, Federici N. Renal and Genitourinary Ultrasound Evaluation in Emergency and Critical Care: An Overview. Healthcare (Basel) 2024; 12:1356. [PMID: 38998890 PMCID: PMC11241743 DOI: 10.3390/healthcare12131356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/30/2024] [Accepted: 07/04/2024] [Indexed: 07/14/2024] Open
Abstract
Renal and genitourinary ultrasound are fundamental resources employed by emergency and critical care healthcare providers to make prompt diagnoses and perform ultrasound-guided procedures. At the bedside, ultrasound can aid in the diagnosis of relevant pathologies, such as post-renal obstruction or kidney stones, and life-threatening conditions such as aortic dissection or hemoperitoneum. A narrative overview was performed, providing an updated review of renal and genitourinary ultrasound for emergency and critical care healthcare providers, emphasizing its advantages and the latest advances in the field. A thorough summary that can be utilized as a guide for emergency and critical care healthcare providers is presented. The daily hemodynamic management of critically ill patients involves the implementation of new protocols, such as VexUS or the evaluation of the renal resistance index. The role of ultrasound in managing acute nephropathy and genitourinary issues is increasingly crucial given its bedside availability, thus this imaging modality not only facilitates the initiation of therapeutic interventions but also provides swift prognostic insights that are vital to provide tailored patient care. As further advances in ultrasound will arise, it is important for healthcare providers to foster the use of these technologies capable of improving patient outcomes.
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Affiliation(s)
- Daniele Orso
- Department of Emergency "Santa Maria della Misericordia", University Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Daniele Peric
- Department of Emergency, University Hospital of Trieste, Azienda Sanitaria Universitaria Giuliano-Isontina, 34128 Trieste, Italy
| | - Carmine Cristiano Di Gioia
- Department of Emergency Medicine, Community Hospital of Baggiovara (MO), Azienda Ospedaliero-Universitaria di Modena, 41125 Modena, Italy
| | - Irene Comisso
- Department of Emergency "Santa Maria della Misericordia", University Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Tiziana Bove
- Department of Emergency "Santa Maria della Misericordia", University Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
- Department of Medicine (DME), University of Udine, 33100 Udine, Italy
| | - Alessio Ban
- Department of Pediatrics, Community Hospital of Latisana (UD), Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Federico Fonda
- Department of Emergency "Santa Maria della Misericordia", University Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Nicola Federici
- Department of Emergency "Santa Maria della Misericordia", University Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
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Dos Santos Rosse N, Reis ECC. Doppler renal resistivity index in horses: A systematic review. Equine Vet J 2024. [PMID: 38924139 DOI: 10.1111/evj.14125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 06/02/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND The resistivity index (RI) evaluates haemodynamic based on arterial resistance. Alterations in renal blood flow are important for the early detection of kidney damage, as perfusion might be one of the first affected aspects. OBJECTIVES To retrieve published studies on equine renal RI to develop a standardised method of renal ultrasonographic examination and to evaluate the current reference range for the renal RI in horses. STUDY DESIGN Systematic review. METHODS An electronic search in Science Direct, PubMed, Scopus and Web of Science databases was performed in February 2023 using the terms 'RI' OR 'resistivity index' OR 'IP' OR 'pulsatility index' AND (kidney OR renal) AND (equine OR horse) in titles, keywords and abstracts. The studies were screened for inclusion based on pre-determined criteria and data on the variables of interest were collected from included studies. The SYRCLE risk of bias tool was used to assess the methodological quality. RESULTS The electronic searches identified 134 studies, of which 5 were eligible for inclusion in this review. The studies had been conducted in healthy non-sedated horses through the transabdominal technique. The upper limit of normality for the renal RI was 0.58 ± 0.06 for the right kidney of untrained horses, which is considerably lower than the value of 0.70 currently used for humans, cats and dogs. There were heterogenous outcomes among the studies: two of the five demonstrated a difference between the right and left renal RI values, and one of the five showed an increased renal RI in elderly horses compared with foals and adult horses. MAIN LIMITATIONS Data regarding the RI in horses are still scarce. CONCLUSIONS Additional studies that establish a reference range for the renal RI in horses are needed and there is a need to ensure consistency of techniques.
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Haberal HB, Tonyali S. Factors predicting the need for surgical intervention for hydronephrosis during pregnancy: a systematic review of the literature. Arch Gynecol Obstet 2024; 309:1801-1806. [PMID: 38413423 DOI: 10.1007/s00404-024-07391-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024]
Abstract
PURPOSE Symptomatic hydronephrosis in pregnancy can cause both maternal and obstetric complications. In various studies, factors predicting the need for surgical intervention have been evaluated, however these factors have not been systematically assessed yet. This systematic review analyzes published studies about hydronephrosis during pregnancy and determines the predictive factors for the need for surgical intervention for hydronephrosis during pregnancy. MATERIALS AND METHODS A systematic review was conducted in January 2023 using the Medline, Web of Science and ScienceDirect/Scopus databases according to PRISMA guidelines. We searched these databases with the following search strategy: (intervention OR nephrostomy OR stent insertion) AND (pregnancy hydronephrosis). RESULTS The literature review revealed 2461 potentially eligible studies. After the screening, six studies were enrolled in this review. High neutrophil-to-lymphocyte ratio, high C-reactive protein level, high white blood cell count, high creatinine levels, fever, persistent pain for more than 4 days, presence of ureteral stones more than 8 mm, high grade hydronephrosis, high fetal body weight and high delta resistive index were reported to be related with the need for surgical intervention. CONCLUSION The rate of symptomatic hydronephrosis and requirement for surgical intervention is low during pregnancy. However, as symptomatic hydronephrosis may cause serious obstetric complications, it is important to know the parameters that can predict patients who may need surgical intervention. These results will assist gynecologists and urologists to stratify pregnant women for surgical intervention.
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Affiliation(s)
- Hakan Bahadir Haberal
- Department of Urology, Ankara Ataturk Sanatoryum Training and Research Hospital, Ministry of Health, University of Health Sciences, 06290, Ankara, Turkey.
| | - Senol Tonyali
- Department of Urology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Zhang D, Zhang J, Zhang X, Zhang B, Li T. Resistive index as predictor of acute kidney injury in patients with non-ST-segment elevation myocardial infarction. Am J Med Sci 2024; 367:190-194. [PMID: 38013115 DOI: 10.1016/j.amjms.2023.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/04/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Acute kidney injury (AKI) is common in patients with non-ST-segment elevation myocardial infarction (NSTEMI). Early detection of AKI is likely to speed diagnosis and implementation of measures to preserve renal function. To evaluate if renal Doppler resistive index (RI) would predict AKI in patients with NSTEMI on presentation in the emergency department. METHODS Patients with NSTEMI at the emergency department were included. The renal Doppler RI was measured. Baseline demographic data and clinical characteristics of patients at admittance were recorded. Based on discharge diagnosis, the patients were divided into AKI group and no-AKI group. Multiple logistic regression analysis was performed to determine predictor variables significantly associated with AKI. RESULTS A total of 293 patients were included in the analysis; 44 (15.0%) developed AKI without need for dialysis. There were statistical differences in the age, incidence of diabetes mellitus and cerebrovascular disease, beta-receptor blockers, serum creatinine and renal index between the two groups. Using multivariate logistic regression analysis, age [OR 1.87; 95% confidence interval (CI) 1.595-2.585; p = 0.027], diabetes mellitus (OR 2.007, 95% CI: 1.489-2.793; p = 0.014), serum creatinine (OR 1.817, 95% CI: 1.568-2.319; p = 0.013), and RI (OR 2.168, 95% CI: 1.994-4.019; p = 0.003) predicted AKI in patients with NSTEMI. According to receiver operating characteristic (ROC) analysis, RI showed a significantly increased area under the curve (AUC) compared to serum creatitine (AUC: 0.891 vs 0.679; p < 0.001). CONCLUSIONS Renal Doppler RI may be a useful predictor of AKI in patients with NSTEMI in the emergency department.
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Affiliation(s)
- Dahui Zhang
- Emergency Department, Affiliated Hospital of Hebei University, Baoding, China
| | - Jianjun Zhang
- Emergency Department, Affiliated Hospital of Hebei University, Baoding, China
| | - Xiu Zhang
- Emergency Department, Affiliated Hospital of Hebei University, Baoding, China
| | - Bing Zhang
- Emergency Department, Affiliated Hospital of Hebei University, Baoding, China
| | - Tao Li
- Surgery Intensive Care Unit, China-Japan Friendship Hospital, Beijing, China.
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Kawakami S, Yasuno T, Kotoku K, Kawakami S, Ito A, Fujimi K, Matsuda T, Nakashima S, Masutani K, Uehara Y, Higaki Y, Michishita R. The differences in renal hemodynamic response following high-intensity exercise between younger and older males. Clin Exp Nephrol 2023; 27:972-980. [PMID: 37450106 DOI: 10.1007/s10157-023-02381-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Renal blood flow (RBF) decreases with exercise, but this change is only temporary, and habitual exercise may be an effective method to improve renal function. The kidney shows structural and functional changes with aging, but it is unclear how aging affects the hemodynamic response of the kidneys to exercise. Therefore, we evaluated the differences in the hemodynamic response of the kidneys to high-intensity exercise between younger and older men. METHODS Sixteen men (8 young and 8 older) underwent an incremental exercise test using a cycle ergometer with a 1-min warm up followed by exercise at 10-20 W/min until the discontinuation criteria were met. Renal hemodynamics were assessed before exercise, immediately after exercise, and at 60-min after exercise using ultrasound echo. RESULTS High-intensity exercise significantly reduced RBF in both groups (younger: ∆ - 53 ± 16%, p = 0.0005; older: ∆ - 53 ± 19%, p = 0.0004). In the younger group, RBF returned to the pre-exercise level 60-min after exercise (∆ - 0.4 ± 5.7%, p > 0.9999). In contrast, RBF 60-min after exercise was significantly lower than that before exercise in the older group (∆ - 24 ± 19%, p = 0.0006). The older group had significantly lower RBF than younger adults 60-min after exercise (423 ± 32 vs. 301 ± 98 mL/min, p = 0.0283). CONCLUSIONS Our findings demonstrate that RBF following high-intensity exercise recovered 60-min after exercise in younger group, whereas RBF recovery was delayed in the older group.
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Affiliation(s)
- Shotaro Kawakami
- Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Tetsuhiko Yasuno
- Division of Nephrology and Rheumatology, Department of Internal Medicine, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Kazuko Kotoku
- Faculty of Fukuoka Medical Technology, Teikyo University, 6-22, Misaki-Machi, Omuta-Shi, Fukuoka, Japan
| | - Saki Kawakami
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Ai Ito
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Kanta Fujimi
- Department of Rehabilitation, Fukuoka University Hospital, Fukuoka, Japan
| | - Takuro Matsuda
- Department of Rehabilitation, Fukuoka University Hospital, Fukuoka, Japan
| | - Shihoko Nakashima
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Kosuke Masutani
- Division of Nephrology and Rheumatology, Department of Internal Medicine, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Yoshinari Uehara
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Yasuki Higaki
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan
| | - Ryoma Michishita
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan.
- The Fukuoka University Institute for Physical Activity, Fukuoka, Japan.
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Pichon J, Roche A, Fauvel C, Boucly A, Mercier O, Ebstein N, Beurnier A, Cortese J, Jevnikar M, Jaïs X, Fartoukh M, Fadel E, Sitbon O, Montani D, Voiriot G, Humbert M, Savale L. Clinical relevance and prognostic value of renal Doppler in acute decompensated precapillary pulmonary hypertension. Eur Heart J Cardiovasc Imaging 2023; 24:1518-1527. [PMID: 37194564 DOI: 10.1093/ehjci/jead104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/18/2023] Open
Abstract
AIMS We aim to evaluate the clinical relevance and the prognostic value of arterial and venous renal Doppler in acute decompensated precapillary pulmonary hypertension (PH). METHODS AND RESULTS The renal resistance index (RRI) and the Doppler-derived renal venous stasis index (RVSI) were monitored at admission and on Day 3 in a prospective cohort of precapillary PH patients managed in intensive care unit for acute right heart failure (RHF). The primary composite endpoint included death, circulatory assistance, urgent transplantation, or rehospitalization for acute RHF within 90 days following inclusion. Ninety-one patients were enrolled (58% female, age 58 ± 16 years). The primary endpoint event occurred in 32 patients (33%). In univariate logistic regression analysis, variables associated with RRI higher than the median value were non-variable parameters (age and history of hypertension), congestion (right atrial pressure and renal pulse pressure), cardiac function [tricuspid annular plane systolic excursion (TAPSE) and left ventricular outflow tract- velocity time integral], systemic pressures and NT-proBNP. Variables associated with RVSI higher than the median value were congestion (high central venous pressure, right atrial pressure, and renal pulse pressure), right cardiac function (TAPSE), severe tricuspid regurgitation, and systemic pressures. Inotropic support was more frequently required in patients with high RRI (P = 0.01) or high RVSI (P = 0.003) at the time of admission. At Day 3, a RRI value <0.9 was associated with a better prognosis after adjusting to the estimated glomerular filtration rate. CONCLUSION Renal Doppler provides additional information to assess the severity of patients admitted to the intensive care unit for acute decompensated precapillary PH.
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Affiliation(s)
- Jérémie Pichon
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Anne Roche
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Charles Fauvel
- CHU Rouen, Department of Cardiology, F-76000 Rouen, France
- Université Rouen Normandie, Inserm U1096, F-76000 Rouen, France
| | - Athénais Boucly
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Olaf Mercier
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
- Service de Chirurgie Thoracique, Vasculaire et Transplantation Cardio-pulmonaire, Hôpital Marie-Lannelongue, 92350 Le Plessis Robinson, France
| | - Nathan Ebstein
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Antoine Beurnier
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Jonathan Cortese
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
- AP-HP, Department of Interventional Neuroradiology, NEURI Brain Vascular Center, Bicêtre Hospital, 94276, Le Kremlin-Bicêtre, France
| | - Mitja Jevnikar
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Xavier Jaïs
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Muriel Fartoukh
- Sorbonne Université, Assistance Publique - Hôpitaux de Paris, Service de Médecine Intensive Réanimation, Hôpital Tenon, 75020 Paris, France
- Centre de Recherche Saint-Antoine UMRS_938 INSERM, 75012 Paris, France
| | - Elie Fadel
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
- Service de Chirurgie Thoracique, Vasculaire et Transplantation Cardio-pulmonaire, Hôpital Marie-Lannelongue, 92350 Le Plessis Robinson, France
| | - Olivier Sitbon
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - David Montani
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Guillaume Voiriot
- Sorbonne Université, Assistance Publique - Hôpitaux de Paris, Service de Médecine Intensive Réanimation, Hôpital Tenon, 75020 Paris, France
- Centre de Recherche Saint-Antoine UMRS_938 INSERM, 75012 Paris, France
| | - Marc Humbert
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
| | - Laurent Savale
- Assistance Publique - Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, 78 rue du général Leclerc, 94270 Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 « Pulmonary Hypertension: Pathophysiology and Novel Therapies », Hôpital Marie Lannelongue, 92350 Le Plessis-Robinson, France
- Université Paris-Saclay, Faculté de Médecine, 94276 Le Kremlin Bicêtre, France
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Karasu BB, Emekli E. The Relationship of Renal Augmented Velocity Index With Ventricular-Arterial Coupling in Comparison to Renal Resistive Index: Analysis by Means of Arterial and Ventricular Elastances in Hypertensive Patients. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2023; 42:2143-2154. [PMID: 37310113 DOI: 10.1002/jum.16285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/08/2023] [Accepted: 05/21/2023] [Indexed: 06/14/2023]
Abstract
OBJECTIVE It's a well-known scientific statement that the heart and kidney functions are frequently tied together and the impairment of one directly alters the other. However, there exist knowledge gaps about this intricate pathophysiologic link and the exact unifying mechanism is not established. Herein, we aimed to investigate the presence of cardiorenal interaction at subclinical level while the conventional cardiac and renal clinical parameters are not disrupted yet in patients with hypertension. METHODS We chose a novel renal Doppler ultrasonographic parameter-augmented velocity index (Avi)-and an echocardiographic measure-ventriculoarterial coupling-which is complex to analyze but increasingly used after its acceptance about being a key determinant of cardiovascular efficiency. We recruited 137 patients without a previous history of antihypertensive medication use (47.4% women; median age, 49 years). Renal Avi, renal resistive index (RI), arterial elastance (Ea ), ventricular elastance (Ees ) and Ea /Ees (ventriculoarterial coupling) parameters were all examined. RESULTS Renal Avi, Ea , and Ea /Ees values were higher in females. Correlation analysis revealed that renal Avi was correlated with many hemodynamic variables including Ea and Ea /Ees . On multiple linear regression analysis, Ea and Ea /Ees remained as significant independent predictors of renal Avi but not of renal RI after adjustments for co-variables (β = 0.488, P < .001 for Ea ; β = 0.380, P < .001 for Ea /Ees ). CONCLUSIONS In comparison to renal RI, we suggest that renal Avi is a more reliable and promising index that can even measure subclinical changes in the cardiorenal circulation which needs to be elucidated.
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Affiliation(s)
- Betul Banu Karasu
- Department of Cardiology, Etimesgut Sehit Sait Erturk State Hospital, Ankara, Turkey
| | - Emre Emekli
- Department of Radiology, Etimesgut Sehit Sait Erturk State Hospital, Ankara, Turkey
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9
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Ulpiano Trillig A, Damianaki A, Hendriks-Balk M, Brito W, Garessus J, Burnier M, Wuerzner G, Pruijm M. Determinants of Renal Micro-Perfusion as Assessed with Contrast-Enhanced Ultrasound in Healthy Males and Females. J Clin Med 2023; 12:4141. [PMID: 37373834 DOI: 10.3390/jcm12124141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
(1) Background: The renal microcirculation is essential to maintain the renal function, but its determinants in humans have been poorly studied. Contrast-enhanced ultrasound (CEUS) allows the non-invasive quantification of the cortical micro-perfusion at the bedside using the perfusion index (PI). The aims of this study were to assess whether differences exist in PI between healthy males and females and to identify clinical determinants associated with cortical micro-perfusion. (2) Methods: Healthy, normotensive volunteers (eGFR > 60 mL/min/1.73 m2, no albuminuria) underwent CEUS under standardized conditions with the destruction-reperfusion (DR) technique. The mean PI of four DR sequences was reported as the primary outcome measure (3) Results: A total of 115 subjects (77 females and 38 males) completed the study; the mean ± SD age was, respectively, 37.1 ± 12.2 and 37.1 ± 12.7 years in females and males, and the mean eGFR was 105.9 ± 15.1 and 91.0 ± 17.4 mL/min/1.73 m2. The PI (median) was higher in females than in males, i.e., 2705 (IQR 1641-3777) vs. 1965 (IQR 1294-3346) arbitrary units (a.u), p = 0.02). A correlation analysis showed positive associations between PI and eGFR, female sex, heart rate, plasma renin activity (PRA) and plasma aldosterone concentrations (PAC), negative associations with potassium, bicarbonate and systolic blood pressure, and no associations with age, body mass index and renal resistive index (RRI). In a multivariate linear regression analysis, only PRA remained significantly associated with PI. (4) Conclusions: Although the PI was higher among females, this association was no longer significant after adjustment for covariates. There was no difference in females tested during the follicular or the luteal phases. In conclusion, the PI was only weakly influenced by classic clinical variables, but was positively associated with PRA, suggesting that the renin-angiotensin system plays a role in the regulation of the cortical micro-perfusion in humans. Identifying which other factors contribute to the large variations in micro-perfusion across individuals needs further study.
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Affiliation(s)
- Antonio Ulpiano Trillig
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Aikaterini Damianaki
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Mariëlle Hendriks-Balk
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Wendy Brito
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Jonas Garessus
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Michel Burnier
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Grégoire Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
| | - Menno Pruijm
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 17, 1005 Lausanne, Switzerland
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Christoffersen BØ, Kristensen CA, Lindgaard R, Kirk RK, Viuff BM, Kvist PH, Pedersen HD, Ludvigsen TP, Skovgaard T, Fels JJ, Martinussen T, Christiansen LB, Cirera S, Olsen LH. Functional and morphological renal changes in a Göttingen Minipig model of obesity-related and diabetic nephropathy. Sci Rep 2023; 13:6017. [PMID: 37045950 PMCID: PMC10097698 DOI: 10.1038/s41598-023-32674-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 03/31/2023] [Indexed: 04/14/2023] Open
Abstract
Obesity-related glomerulopathy and diabetic nephropathy (DN) are serious complications to metabolic syndrome and diabetes. The purpose was to study effects of a fat, fructose and cholesterol-rich (FFC) diet with and without salt in order to induce hypertension on kidney function and morphology in Göttingen Minipigs with and without diabetes. Male Göttingen Minipigs were divided into 4 groups: SD (standard diet, n = 8), FFC (FFC diet, n = 16), FFC-DIA (FFC diet + diabetes, n = 14), FFC-DIA + S (FFC diet with extra salt + diabetes, n = 14). Blood and urine biomarkers, glomerular filtration rate (GFR), blood pressure (BP) and resistive index (RI) were evaluated after 6-7 months (T1) and 12-13 months (T2). Histology, electron microscopy and gene expression (excluding FFC-DIA + S) were evaluated at T2. All groups fed FFC-diet displayed obesity, increased GFR and RI, glomerulomegaly, mesangial expansion (ME) and glomerular basement membrane (GBM) thickening. Diabetes on top of FFC diet led to increased plasma glucose and urea and proteinuria and tended to exacerbate the glomerulomegaly, ME and GBM thickening. Four genes (CDKN1A, NPHS2, ACE, SLC2A1) were significantly deregulated in FFC and/or FFC-DIA compared to SD. No effects on BP were observed. Göttingen Minipigs fed FFC diet displayed some of the renal early changes seen in human obesity. Presence of diabetes on top of FFC diet exacerbated the findings and lead to changes resembling the early phases of human DN.
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Affiliation(s)
| | - Camilla Aarup Kristensen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
- AJ Vaccines A/S, Copenhagen S, Denmark
| | - Rikke Lindgaard
- Novo Nordisk A/S, Måløv, Denmark
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
- AniCura ApS, Herlev, Denmark
| | | | | | | | | | | | - Tine Skovgaard
- Novo Nordisk A/S, Måløv, Denmark
- Unilabs, Copenhagen, Denmark
| | | | - Torben Martinussen
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Liselotte Bruun Christiansen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
- Novo Nordisk A/S, Søborg, Denmark
| | - Susanna Cirera
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Lisbeth Høier Olsen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark.
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11
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Halimi JM, Vernier LM, Gueguen J, Goin N, Gatault P, Sautenet B, Barbet C, Longuet H, Roumy J, Buchler M, Blacher J, de Freminville JB. End-diastolic velocity mediates the relationship between renal resistive index and the risk of death. J Hypertens 2023; 41:27-34. [PMID: 36129106 DOI: 10.1097/hjh.0000000000003293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Renal resistive index predicts the risk of death in many populations but the mechanism linking renal resistive index and death remains elusive. Renal resistive index is derived from end-diastolic velocity (EDV) and peak systolic velocity (PSV). However, the predictive value of EDV or PSV considered alone is unknown. METHODS We conducted a retrospective analysis of 2362 consecutive patients who received a kidney transplant from 1985 to 2017. EDV and PSV were measured at 3 months after transplantation, renal resistive index was calculated, and the risk of death was assessed [median follow-up: 6.25 years (0.25-29.15); total observation period: 13 201 patient-years]. RESULTS Doppler indices were available in 1721 of 2362 (78.9%) patients (exclusions: 113 who died or returned to dialysis before, 427 with no Doppler studies, 27 with renal artery stenosis, 74 missing values). Among them, 279 (16.4%) had diabetes before transplantation. Mean age was 51.5 ± 14.7, 1097 (63.7%) were male. During follow-up, 217 of 1721 (12.6%) patients died. Renal resistive index and EDV shared many determinants (notably systolic, diastolic and pulse pressure, recipient age and diabetes) unlike renal resistive index and PSV. EDV used as a binary [lowest tertile vs. higher values: (hazard ratio: 2.57 (1.96-3.36), P < 0.001)] and as a continuous (the lower EDV, the greater the risk of death) variable was significantly associated with the risk of death. This finding was confirmed in multivariable analyses. Prediction of similar magnitude was found for renal resistive index. No association was found between PSV used as a binary or a continuous variable and the risk of death. CONCLUSION Low EDV explains high renal resistive index, and the mechanism-linking renal resistive index to the risk of death is through low EDV.
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Affiliation(s)
- Jean-Michel Halimi
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
- EA4245, University of Tours, Tours
- INI-CRCT, Nancy
| | - Louis-Marie Vernier
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
| | - Juliette Gueguen
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
| | - Nicolas Goin
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
| | - Philippe Gatault
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
- EA4245, University of Tours, Tours
| | - Bénédicte Sautenet
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
- INI-CRCT, Nancy
- INSERM U1246 SPHERE, Université de Tours-Université de Nantes
| | - Christelle Barbet
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
| | - Hélène Longuet
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
| | - Jérôme Roumy
- Service d'Imagerie Médicale, Hôpital Bretonneau, CHU Tours, Tours
| | - Matthias Buchler
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
- EA4245, University of Tours, Tours
| | - Jacques Blacher
- Centre de Diagnostic et de Thérapeutique, Hôtel-Dieu
- Université Paris, Paris, France
| | - Jean-Baptiste de Freminville
- Service de Néphrologie-Hypertension, Dialyses, Transplantation rénale, Hôpital Bretonneau, Centre Hospitalier Universitaire de Tours
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12
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Qian X, Zhen J, Meng Q, Li L, Yan J. Intrarenal Doppler approaches in hemodynamics: A major application in critical care. Front Physiol 2022; 13:951307. [PMID: 36311236 PMCID: PMC9597190 DOI: 10.3389/fphys.2022.951307] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 09/28/2022] [Indexed: 10/04/2023] Open
Abstract
The treatment of severe cases usually requires multimodality hemodynamic monitoring approaches, particularly for tissue and organ perfusion tracking. Currently, only a few studies have investigated renal perfusion status at the bedside. Ultrasound has become increasingly utilized to guide the hemodynamic management of severe patients. Similarly, intrarenal Doppler (IRD) is widely used to assess renal perfusion from both the intrarenal artery and vein perspectives. The renal resistive index (RRI), which reflects the renal arterial blood flow profile, is often applied to predict the reversibility of renal dysfunction and to titrate hemodynamic support. Intrarenal venous flow (IRVF) patterns and the renal venous stasis index (RVSI), which reflects the intrarenal vein blood flow profile, are now being used to assess intravenous congestion. They may also be useful in predicting the risk of acute kidney injury and avoiding fluid overload. IRD can provide diverse and supplemental information on renal perfusion and may help to establish the early diagnosis in severe patients. This review focused on the specific operational methods, influencing factors, and applications of IRD in hemodynamics.
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Affiliation(s)
- Xiaoling Qian
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, China
| | - Junhai Zhen
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, China
| | - Qingxiang Meng
- Department of Ultrasound Medicine, Zhejiang Hospital, Hangzhou, China
| | - Li Li
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, China
| | - Jing Yan
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou, China
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13
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Hendriks-Balk MC, Damianaki A, Polychronopoulou E, Brito W, Pruijm M, Wuerzner G. Contrast-Enhanced Ultrasonography Enables the Detection of a Cold Pressor Test-Induced Increase in Renal Microcirculation in Healthy Participants. Front Cardiovasc Med 2022; 9:899327. [PMID: 35669471 PMCID: PMC9163379 DOI: 10.3389/fcvm.2022.899327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundRenal microcirculation is essential for regulation of the glomerular filtration rate, the reabsorption of salt and water from the interstitium, and hence the blood pressure. Renal ultrasonography coupled to Doppler analysis and contrast-enhanced ultrasound enables the study of renal perfusion. So far, physiologic interventions have rarely been performed to assess the renal perfusion. The objective of our study was to measure the renal perfusion in response to a cold pressor test (CPT).MethodsHealthy adult participants were exposed to a 2 min CPT or a sham exposure (body temperature). Systemic hemodynamics, renal resistive index (RRI) and renal perfusion index (PI) were measured before and during the CPT or the sham exposure. Renal responses were compared using a paired Student's t-test or Wilcoxon signed rank test. Pearson correlation test was used to test association of variables of interest.ResultsForty-one normotensive participants (21 women) were included in the study. Mean blood pressure and heart rate both increased with the CPT. The RRI decreased from 0.60 ± 0.05 arbitrary units (AU) to 0.58 ± 0.05 AU (p < 0.05) and the PI increased from 2,074 AU (1,358–3,346) to 3,800 AU (2,118–6,399) (p < 0.05) (+66% (24–106%)). Compared to the sham exposure, the increase in PI with the CPT was more marked. There was a negative association between the increase in heart rate and mean blood pressure with the RRI (r: −0.550, p = 0.002 and r: −0.395, P = 0.016), respectively.ConclusionDoppler Ultrasound and CEUS enable the detection of physiological changes within the macro- and microvascular renal circulation. The CPT decreases the RRI and increases the PI. Whether these changes are present in pathological states such as diabetes or hypertension will need additional studies.
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14
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Evangelista GCL, Viana AGDA, Neves MM, Reis ECC. Resistivity and pulsatility indexes in feline kidney disease: a systematic review. Vet Radiol Ultrasound 2022; 63:306-318. [PMID: 35576272 DOI: 10.1111/vru.13102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 03/03/2022] [Accepted: 03/10/2022] [Indexed: 12/09/2022] Open
Abstract
Doppler ultrasonography is used in the evaluation of hemodynamics, and the resistivity (RI) and pulsatility (PI) indexes provide information about resistance to blood flow within a vessel. This systematic review was carried out to evaluate renal RI and PI in clinically healthy and nonsedated cats and as well as their usefulness in the evaluation of kidney disease in cats. An electronic search in the PubMed, Scopus, and Web of Science databases was carried out using the terms "resistive index" or "resistivity index" or "pulsatility index;" "Doppler;" "renal" or "kidney;" and "cat" or "feline" in titles, abstracts, and keywords. Variables of interest related to experimental model features, research methods, and technical resources were extracted from the studies. The methodological quality was assessed with SYRCLE's risk of bias tool. Thus, 14 studies involving healthy and sick cats were selected. Interestingly, the upper limits estimated for both RI and PI varied among studies. The upper limits of renal RI for healthy cats varied between 0.64 and 0.72, while for PI, the values varied from 1.06 to 1.29. A limited number of studies evaluated cats with kidney disease. In most studies, RI values of kidneys with different conditions were significantly different from kidneys of healthy animals, indicating that RI values increase with kidney disease. The parameters body weight, heart rate, and age seem to influence the RI values. Standardized studies regarding its realization and description are still necessary to define normal values and analyze its applicability in the clinical diagnostic routine.
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15
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Osipova EV, Osipova EA, Melnikova LV. Significance of modern diagnostic methods in the early diagnosis of hypertensive nephropathy. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2022. [DOI: 10.15829/1728-8800-2022-2882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The review analyzes modern criteria for early diagnosis of renal damage in hypertensive patients. Based on numerous studies, the role of impaired renal function markers and renal artery Doppler ultrasound in the diagnosis of hypertensive nephropathy is indicated. A search was made for the relationship between laboratory criteria for kidney damage and renal Doppler ultrasound characteristics in hypertensive patients. In addition, the importance of revealing intrarenal hemodynamic disorders in the early diagnosis of hypertensive nephropathy was established.
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Affiliation(s)
- E. V. Osipova
- Penza Institute for Postgraduate Medical Education — branch of the Russian Medical Academy of Continuous Professional Education
| | | | - L. V. Melnikova
- Russian Medical Academy of Continuous Professional Education
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16
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The renal artery pulsatility index enables real-time monitoring of acute kidney injury after digestive surgery. Surgery 2022; 171:1406-1411. [DOI: 10.1016/j.surg.2021.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/27/2021] [Accepted: 09/07/2021] [Indexed: 12/12/2022]
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17
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Yaport MA, Denault A. The Science and Innovation Behind Google Maps and Renal-Resistive Index. J Cardiothorac Vasc Anesth 2021; 35:3826-3828. [PMID: 34538744 DOI: 10.1053/j.jvca.2021.08.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Miguel A Yaport
- Department of Anesthesiology, Tufts University School of Medicine, Boston, MA.
| | - Andre Denault
- Department of Anesthesiology, Faculté de médecine de l'Université de Montréal, Montréal, Quebec
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18
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Giustiniano E, Pugliese L, Calabrò L, Nisi F. Renal Resistive Index: Not Only for Kidney Clinics. JOURNAL OF ULTRASOUND IN MEDICINE 2021; 41:1027-1030. [PMID: 34213804 DOI: 10.1002/jum.15775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 05/14/2021] [Indexed: 02/05/2023]
Abstract
Renal Resistive Index (RRI) is a measurement of the resistance of the renal blood flow. A value higher than 0.70 is a marker of increased resistance and is correlated with kidney injury and its severity. Additionally, it may be associated with the mortality rate in the post-surgery population. In COVID-19 subjects, we found that high RRI has been associated with high levels of serum C-reactive protein, a marker of systemic inflammatory reaction syndrome. Finally, we propose RRI not only as a marker of kidney injury, but also as a tool to evaluate the course of critical illness.
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Affiliation(s)
- Enrico Giustiniano
- Department of Anesthesia and Intensive Care - IRCCS, Humanitas Clinical and Research Hospital, Milan, Italy
| | - Luca Pugliese
- Department of Anesthesia and Intensive Care - IRCCS, Humanitas Clinical and Research Hospital, Milan, Italy
| | - Lorenzo Calabrò
- Department of Anesthesia and Intensive Care - IRCCS, Humanitas Clinical and Research Hospital, Milan, Italy
| | - Fulvio Nisi
- Department of Anesthesia and Intensive Care - IRCCS, Humanitas Clinical and Research Hospital, Milan, Italy
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Tomii D, Horiuchi Y, Gonda Y, Yoshiura D, Nakajima M, Sekiguchi M, Watanabe Y, Nakamura K, Setoguchi N, Nakase M, Kikushima H, Ninomiya K, Tanaka T, Asami M, Yahagi K, Yuzawa H, Komiyama K, Tanaka J, Aoki J, Tanabe K. The role of the renal resistance index in patients with heart failure with reduced or preserved ejection fraction. J Cardiol 2021; 78:301-307. [PMID: 34088562 DOI: 10.1016/j.jjcc.2021.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/21/2021] [Accepted: 05/05/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Renal impairment is a common phenomenon that portends a poor prognosis of heart failure (HF). The renal arterial resistance index (RRI) can be useful for defining renal function and predicting outcomes in patients with HF. This study aimed to investigate the determining factors of the RRI in HF patients with preserved ejection fraction (HFpEF) and with reduced EF (HFrEF). METHODS This retrospective study included 330 patients with HF. We investigated the determining factors for the RRI and the association between the RRI and 1-year composite outcome, comprising all-cause mortality and re-hospitalization for HF. RESULTS The independent predictors of the RRI were tricuspid regurgitation peak gradient and estimated glomerular filtration rate in HFpEF, and pulse pressure and blood urea nitrogen in HFrEF. During the follow-up, 30 (9.1%) patients presented the composite outcome. Cox proportional hazard analysis revealed the association of the RRI with the composite outcome in both HFrEF (HR 1.08; 95% CI 1.03-1.14) and HFpEF (HR 1.07; 95% CI 1.03-1.12) without an interaction (p for interaction = 0.770). CONCLUSIONS The RRI was a consistent prognosticator in patients with HFpEF and those with HFrEF, while factors defining RRI were different between these groups.
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Affiliation(s)
- Daijiro Tomii
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Yu Horiuchi
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan.
| | - Yuki Gonda
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Daiki Yoshiura
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Momoka Nakajima
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | | | - Yusuke Watanabe
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Kosuke Nakamura
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Naoto Setoguchi
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Masaaki Nakase
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Hosei Kikushima
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Kai Ninomiya
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Tetsu Tanaka
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Masahiko Asami
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Kazuyuki Yahagi
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Hitomi Yuzawa
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Kota Komiyama
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Jun Tanaka
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Jiro Aoki
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | - Kengo Tanabe
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
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Yao YL, Gao Y. Present Situation and Research Progress of Kidney Function Recoverability Evaluation of Acute Kidney Injury Patient. Int J Gen Med 2021; 14:1919-1925. [PMID: 34040424 PMCID: PMC8140891 DOI: 10.2147/ijgm.s303348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/15/2021] [Indexed: 12/23/2022] Open
Abstract
Acute kidney injury (AKI) is a critical illness in clinic. The guideline recommendation of kidney disease for improving global outcomes regards urine volume and creatinine as standards to evaluate kidney functions. However, urine volume and creatinine have a certain delay for kidney function evaluation, and these would be interfered by many factors. Whether the renal function of AKI patients can recover is very important, which affects the quality of life of patients. Therefore, the present study reviews the application situation and research progress of the recoverability evaluation of AKI patient kidney function from three aspects: conventional indexes, biomarkers, and imaging methods of kidney function.
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Affiliation(s)
- Yu-Long Yao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Yuan Gao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
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21
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Maternal microvascular dysfunction during preeclamptic pregnancy. Clin Sci (Lond) 2021; 135:1083-1101. [PMID: 33960392 DOI: 10.1042/cs20200894] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 12/15/2022]
Abstract
Preeclampsia is a hypertensive disorder of pregnancy effecting ∼5-8% of pregnancies in the United States, and ∼8 million pregnancies worldwide. Preeclampsia is clinically diagnosed after the 20th week of gestation and is characterized by new onset hypertension accompanied by proteinuria and/or thrombocytopenia, renal insufficiency, impaired liver function, pulmonary edema, or cerebral or visual symptoms. This broad definition emphasizes the heterogeneity of the clinical presentation of preeclampsia, but also underscores the role of the microvascular beds, specifically the renal, cerebral, and hepatic circulations, in the pathophysiology of the disease. While the diagnostic criteria for preeclampsia relies on the development of de novo hypertension and accompanying clinical symptoms after 20-week gestation, it is likely that subclinical dysfunction of the maternal microvascular beds occurs in parallel and may even precede the development of overt cardiovascular symptoms in these women. However, little is known about the physiology of the non-reproductive maternal microvascular beds during preeclampsia, and the mechanism(s) mediating microvascular dysfunction during preeclamptic pregnancy are largely unexplored in humans despite their integral role in the pathophysiology of the disease. Therefore, the purpose of this review is to provide a summary of the existing literature on maternal microvascular dysfunction during preeclamptic pregnancy by reviewing the functional evidence in humans, highlighting potential mechanisms, and providing recommendations for future work in this area.
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22
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Szczepankiewicz B, Pasławska U, Siwińska N, Plens K, Pasławski R. Evaluation of the diagnostic value of the renal resistive index as a marker of the subclinical development of cardiorenal syndrome in MMVD dogs. J Renin Angiotensin Aldosterone Syst 2021; 22:1470320321995082. [PMID: 33730896 PMCID: PMC8010829 DOI: 10.1177/1470320321995082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction: Myxomatous mitral valve disease (MMVD) in dogs inevitably causes renal
dysfunction. These interactions are known as the cardiorenal syndrome (CRS).
The main aims of the study were to evaluate whether renal resistive index
(RRI) may be useful as a non-invasive marker in subclinical stage of kidney
injury in dogs with MMVD and to compare RRI with SDMA and Cyst C. Methods: Forty-four dogs were divided into two groups: control—15 healthy dogs
and the heart group—29 dogs with MMVD (ACVIM class Cc). Study
protocol included: anamnesis, clinical examination, electrocardiography,
echocardiography, chest radiography, abdominal ultrasonography with
measurements of the renal resistive index (RRI), urine, and blood
analysis. Results: The RRI in the heart group was significantly higher
0.725 ± 0.035 versus control group
0.665 ± 0.028
(p < 0.00085). The RRI cut-off
point in dogs with stable chronic heart failure (CHF) under 8 years
is 0.775, in older 0.64. RRI was similar in MMVD dogs treated with
ACE-I + furosemide and dogs treated
ACE-I + torasemide + pimobendan + spironolactone.
There was no correlation between RRI and SDMA or Cyst C. Conclusion: RRI is more sensitive than creatinine, SDMA and Cyst C to reveal kidney
injury in MMVD dogs class Cc younger than 8 years.
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Affiliation(s)
- Barbara Szczepankiewicz
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Urszula Pasławska
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland.,Institute of Veterinary Medicine, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Natalia Siwińska
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | | | - Robert Pasławski
- Institute of Veterinary Medicine, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Torun, Poland
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23
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de Freminville JB, Vernier LM, Roumy J, Patat F, Gatault P, Sautenet B, Barbet C, Longuet H, Merieau E, Buchler M, Halimi JM. Early changes in renal resistive index and mortality in diabetic and nondiabetic kidney transplant recipients: a cohort study. BMC Nephrol 2021; 22:62. [PMID: 33607945 PMCID: PMC7893742 DOI: 10.1186/s12882-021-02263-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/02/2021] [Indexed: 12/23/2022] Open
Abstract
Background Renal resistive index (RI) predicts mortality in renal transplant recipients (RTR). However, its predictive value may be different according to the time of measurement. We analysed RI changes between 1 month and 3 months after transplantation and its predictive value for death with a functioning graft (DWFG). Methods We conducted a retrospective study in 1685 RTR between 1985 and 2017. The long-term predictive value of changes in RI value from 1 month to 3 months was assessed in diabetic and non-diabetic RTR. Results Best survival was observed in RTR with RI < 0.70 both at 1 and 3 months, and the worst survival was found in RTR with RI ≥ 0.70 both at 1 and 3 months (HR = 3.77, [2.71–5.24], p < 0.001). The risk of DWFG was intermediate when RI was < 0.70 at 1 month and ≥ 0.70 at 3 months (HR = 2.15 [1.29–3.60], p = 0.003) and when RI was ≥0.70 at 1 month and < 0.70 at 3 months (HR = 1.90 [1.20–3.03], p = 0.006). In diabetic RTR, RI was significantly associated with an increased risk of death only in those with RI < 0.70 at 1 month and ≥ 0.70 at 3 months (HR = 4.69 [1.07–20.52], p = 0.040). RI considered as a continuous variable at 1 and 3 months was significantly associated with the risk of DWFG in nondiabetic but not in diabetic RTR. Conclusion RI changes overtime and this impacts differently diabetic and nondiabetic RTR. RI short-term changes have a strong prognosis value and refines the risk of DWFG associated with RI. Supplementary Information The online version contains supplementary material available at 10.1186/s12882-021-02263-8.
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Affiliation(s)
- Jean-Baptiste de Freminville
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France. .,University of Tours, Tours, France.
| | | | - Jérome Roumy
- Imagerie Médicale, Hôpital Bretonneau, CHU Tours, Tours, France.,CIC-IT 1415, CHU Tours, Tours, France
| | - Frédéric Patat
- University of Tours, Tours, France.,Imagerie Médicale, Hôpital Bretonneau, CHU Tours, Tours, France.,CIC-IT 1415, CHU Tours, Tours, France
| | - Philippe Gatault
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,University of Tours, Tours, France.,EA4245, University of Tours, Tours, France
| | - Bénédicte Sautenet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,University of Tours, Tours, France
| | - Christelle Barbet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Hélène Longuet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Elodie Merieau
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Matthias Buchler
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,University of Tours, Tours, France.,EA4245, University of Tours, Tours, France
| | - Jean-Michel Halimi
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,University of Tours, Tours, France.,EA4245, University of Tours, Tours, France
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24
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de Freminville JB, Vernier LM, Roumy J, Patat F, Gatault P, Sautenet B, Bailly E, Chevallier E, Barbet C, Longuet H, Merieau E, Baron C, Buchler M, Halimi JM. The association between renal resistive index and premature mortality after kidney transplantation is modified by pre-transplant diabetes status: a cohort study. Nephrol Dial Transplant 2021; 35:1577-1584. [PMID: 31028403 DOI: 10.1093/ndt/gfz067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/12/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Renal resistive index (RI) predicts mortality in renal transplant recipients, but we do not know whether this is true in diabetic patients. The objective of this study was to analyse the long-term predictive value of RI for death with a functioning graft (DWFG) in renal transplant recipients with or without pre-transplant diabetes. METHODS We conducted a retrospective study in 1800 renal transplant recipients between 1985 and 2017 who were followed for up to 30 years (total observation period: 14 202 patient years). Donor and recipient characteristics at time of transplantation and at 3 months were reviewed. The long-term predictive value of RI for DWFG and the age-RI and arterial pressure-RI relationships were assessed. RESULTS A total of 284/1800 (15.7%) patients had diabetes mellitus before transplantation. RI was <0.75 in 1327/1800 patients (73.7%). High RI was associated with a higher risk of DWFG in non-diabetic patients [hazard ratio (HR) = 3.39, 95% confidence interval 2.50-4.61; P < 0.001], but not in patients with pre-transplant diabetes (HR = 1.25, 0.70-2.19; P = 0.39), even after multiple adjustments. There was no interaction between diabetes and age. In contrast, there was an interaction between RI and pulse pressure. CONCLUSION Our study indicates that RI is not a predictor of DWFG in diabetic renal transplant recipients, in contrast to non-diabetic recipients. These findings could be due to a different age-RI or pulse pressure-RI relationship.
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Affiliation(s)
| | | | - Jérome Roumy
- Imagerie Médicale, Hôpital Bretonneau, CHU Tours, Tours, France.,CIC-IT 1415, CHU Tours, Tours, France
| | - Frédéric Patat
- Imagerie Médicale, Hôpital Bretonneau, CHU Tours, Tours, France.,CIC-IT 1415, CHU Tours, Tours, France
| | - Philippe Gatault
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,EA4245, University of Tours, Tours, France
| | - Bénédicte Sautenet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Elodie Bailly
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Eloi Chevallier
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Christelle Barbet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Hélène Longuet
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Elodie Merieau
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Christophe Baron
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,EA4245, University of Tours, Tours, France
| | - Matthias Buchler
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,EA4245, University of Tours, Tours, France
| | - Jean-Michel Halimi
- Néphrologie-Immunologie Clinique, Hôpital Bretonneau, CHU Tours, Tours, France.,EA4245, University of Tours, Tours, France
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25
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Transabdominal Renal Doppler Ultrasound in Healthy Adult Holstein-Friesian Cows: A Pilot Study. Animals (Basel) 2020; 11:ani11010063. [PMID: 33396331 PMCID: PMC7823255 DOI: 10.3390/ani11010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/24/2020] [Accepted: 12/27/2020] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Knowledge of the physiological renal blood flow in cattle is essential for interpretation of Doppler ultrasound. In this paper, we describe a protocol for obtaining the renal Doppler parameters resistive index (RI) and pulsatility index (PI) in a systematic ultrasound evaluation of the kidney in cattle and provide preliminary reference values for healthy adult Holstein-Friesian cows. Abstract There is a notable lack of reference values for the renal resistive indices in the bovine kidney. Ultrasound (US) Doppler evaluation of these indices is a powerful, non-invasive technique for assessing, monitoring and diagnosing renal diseases in humans and other animals (e.g., small animals and horses). The aims of the present study were to establish a protocol for renal Doppler US in adult healthy Holstein-Friesian cows and to provide reference values for the renal resistive index (RI) and pulsatility index (PI). In cattle, the right kidney is always visible through a right abdominal window. Nevertheless, the left kidney is rarely accessible by transabdominal ultrasound. Doppler evaluation of the kidneys via a transabdominal approach is possible when accessible, but measurements can only be made in the larger vessels at the renal hilum. Normal RI and PI values were respectively 0.49 ± 0.07 and 0.70 ± 0.15 for the right kidney and 0.53 ± 0.05 and 0.79 ± 0.11 for the left kidney. We suggest an upper cut-off value for the RI of 0.63 and for the PI of 1.00 in healthy Holstein-Friesian cows. This is the first report describing normal values for the renal RI and PI in cattle that may be useful in future studies for characterizing different bovine pathologies that affect the renal parenchyma.
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26
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Abstract
Gravity affects the physiology of many animals, and the effect is, for good reason, most pronounced in tall species. The physiology-in particular, cardiovascular function-of giraffes has therefore captivated the interest of physiologists for centuries. Several studies document high mean arterial blood pressure of giraffes of about 200 mm Hg. This appears necessary to establish a cerebral perfusion pressure on the order of 100 mm Hg at the cranial end of the carotid arteries. Here, we discuss the unique characteristics of blood vessels, the heart, and the kidney of giraffes and how these functional and structural adaptations are related to very high blood pressure. We also discuss how the cerebral circulation of giraffes is established and what we know about how the blood flow and arterial and venous pressures in giraffes change when they stop to drink and subsequently lift their heads 5-6 m in one sweeping movement.
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Affiliation(s)
- Christian Aalkjær
- Department of Biomedicine, Aarhus University, Aarhus C 8000, Denmark; .,Department of Biomedical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Tobias Wang
- Department of Biology, Aarhus University, Aarhus C 8000, Denmark;
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27
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Cianci R, Gigante A, Bagordo D, Pintus G, Giovannetti A, Lai S, Mazzaferro S, Rosato E. Renal resistive index in IgA nephropathy and renal scleroderma vasculopathy. Microvasc Res 2020; 133:104095. [PMID: 33035555 DOI: 10.1016/j.mvr.2020.104095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Renal Ultra-Sound (US) and Doppler US provide measurements which reflect changes in renal and systemic haemodynamic. The renal resistive index (RRI), obtained through the Doppler spectrum analysis of renal small arteries, is altered in several pathologic conditions. Glomerulonephritis cause minor RRI changes, while renal scleroderma vasculopathy (RSV) leads to significant RRI modifications. The aim of our study was to assess RRI in IgA nephropathy (IgAN) and RSV in a retrospective observational study and to investigate determinants of the RRI in these groups of patients. METHODS We enrolled 61 IgAN patients [23 female, median age 41 (33-58) years] and 80 SSc patients [71 female, median age 52 (43-60) years]. RRI was evaluated in all patients at the time of enrolment. Laboratory tests and clinical assessment were evaluated in all patients. RESULTS IgAN patients showed lower RRI values than RSV patients [0.70 (0.65-0.73) vs 0.66 (0.62-0.72), p < 0.01], while no significant difference in longitudinal length was observed. Median age was significantly lower in IgAN patients than in RSV patients [41 (33-58) vs 52 (43-60), p < 0.05] while IgAN patients showed a higher prevalence of high blood pressure than RSV patients (39.3% vs 13.8%, p < 0.01). The multiple regression analysis, weighted for age, showed that RRI inversely correlates with estimated glomerular filtration rate (β coefficient = -0.524, p < 0.0001). CONCLUSION Higher RRI were found in RSV patients than IgAN patients. IgAN is characterized mainly by glomerular injury, not leading to major RRI changes.
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Affiliation(s)
- Rosario Cianci
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Antonietta Gigante
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Domenico Bagordo
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Giovanni Pintus
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Antonello Giovannetti
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Silvia Lai
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Sandro Mazzaferro
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy
| | - Edoardo Rosato
- Department of Translational and Precision Medicine, "Sapienza", University of Rome, Italy.
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28
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Schytz PA, Nissen AB, Torp-Pedersen C, Gislason GH, Nelveg-Kristensen KE, Hommel K, Gerds TA, Carlson N. Creatinine increase following initiation of antihypertensives is associated with cardiovascular risk: a nationwide cohort study. J Hypertens 2020; 38:2519-2526. [PMID: 32694338 DOI: 10.1097/hjh.0000000000002573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Abrupt decline in renal function following initiation of renin-angiotensin system inhibitor is associated with increased risk of cardiovascular disease, but studies of other antihypertensive drugs are sparse. We investigated the risk of cardiovascular event associated with increased plasma creatinine after initiating first-line antihypertensive treatment. METHODS In a nationwide cohort study, we identified adult Danish primary care patients initiating either renin-angiotensin system inhibitor, calcium channel blocker or thiazide, between 2008 and mid-2018. Patients with prior end-stage renal disease, renal transplantation, or cardiovascular disease were excluded. Percentual plasma creatinine increase was calculated between the nearest creatinine measurement up to 1 year before redeeming the prescription (baseline), and the nearest measurement 90 days or less after (index). Multiple logistic regression and restricted cubic splines were applied to estimate the 6-month absolute risk of cardiovascular event (ischemic heart disease, heart failure or stroke) associated with this creatinine increase. RESULTS We included 20 789 patients. Within the first 6 months of follow-up, 283 (1.4%) cardiovascular events and 93 (0.4%) all-cause deaths were registered. With a creatinine increase of 0 and 30%, 6-month absolute risk [CI] of cardiovascular event was 1.4% [1.1-1.9] and 3.5% [2.4-5.2], respectively (in men aged 50-79 years with estimated glomerular filtration rate at least 60 ml/min per 1.73 m and no diabetes). Higher age and reduced renal function, but not the type of antihypertensive treatment, were associated with higher cardiovascular risk. CONCLUSION In primary care, patients initiating first-line antihypertensive treatment, an increase in plasma creatinine above 30% was associated with increased absolute 6-month risk of cardiovascular event.
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Affiliation(s)
| | | | | | - Gunnar H Gislason
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen.,The Danish Heart Foundation, Copenhagen
| | | | | | - Thomas A Gerds
- Department of Biostatistics, Copenhagen University, Copenhagen, Denmark
| | - Nicholas Carlson
- The Danish Heart Foundation, Copenhagen.,Department of Nephrology, Rigshospitalet Copenhagen
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29
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Bellos I, Pergialiotis V. Doppler parameters of renal hemodynamics in women with preeclampsia: A systematic review and meta-analysis. J Clin Hypertens (Greenwich) 2020; 22:1134-1144. [PMID: 32644302 DOI: 10.1111/jch.13940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/15/2020] [Accepted: 05/25/2020] [Indexed: 12/17/2022]
Abstract
The present meta-analysis aims to compare renal arterial and venous Doppler parameters in women with preeclampsia and healthy pregnant controls. Medline, Scopus, Cochrane Central Register of Controlled Trials, Clinicaltrials.gov, and Google Scholar databases were systematically searched from inception to December 04, 2019. All observational studies reporting renal resistive index, pulsatility index, renal interlobar vein impedance, or pulse transit time among preeclamptic and healthy pregnant women were held eligible. Subgroup analysis was conducted on the basis of disease onset and side of measurement. Both pair-wise and network meta-analysis were performed using Review Manager 5.3 and R-3.4.3 software. Fourteen studies were included, with a total of 1118 women. No difference of renal resistive (MD: 0.00, 95% CI: [-0.03, 0.04]) and pulsatility index (MD: -0.01, 95% CI: [-0.14, 0.12]) was evident between the two groups. Renal interlobar vein impedance was estimated to be significantly higher in preeclampsia (MD: 0.07, 95% CI: [0.06, 0.09]), while venous pulse transit time was significantly lower (MD: -0.10, 95% CI: [-0.14, -0.05]) in women with the disease. Subgroup analysis indicated that early-onset preeclampsia was associated with significantly elevated renal interlobar vein impedance and lower venous pulse transit time than late-onset disease. The outcomes of the present meta-analysis suggest that preeclampsia is characterized by venous hemodynamic dysfunction as it is associated with significantly elevated renal interlobar vein impedance and shorter venous pulse transit time. Future large-scale prospective studies should introduce cutoff values and determine the optimal timing of measurement in order to achieve optimal predictive accuracy.
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Affiliation(s)
- Ioannis Bellos
- Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, Athens University Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasilios Pergialiotis
- Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, Athens University Medical School, National and Kapodistrian University of Athens, Athens, Greece
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30
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Wybraniec MT, Bożentowicz-Wikarek M, Olszanecka-Glinianowicz M, Chudek J, Mizia-Stec K. Renal resistive index and long-term outcome in patients with coronary artery disease. BMC Cardiovasc Disord 2020; 20:322. [PMID: 32631235 PMCID: PMC7339420 DOI: 10.1186/s12872-020-01607-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 06/29/2020] [Indexed: 12/27/2022] Open
Abstract
Background The study aimed to evaluate the application of intra-renal Doppler flow indices for the prediction of major adverse cardiac and cerebrovascular events (MACCE) during 24-month follow-up in patients with coronary artery disease (CAD) subject to coronary angiography (CA). Methods This prospective study comprised 111 consecutive patients with stable and unstable CAD (68.5% men; median age 65 years), referred for CA. Ultrasonographic parameters of intra-renal blood flow in arcuate/interlobular arteries, including renal resistive index (RRI) and pulsatility index (RPI), were acquired directly before and 1 h after the procedure. Endpoint of MACCE (cardiovascular death, myocardial infarction, myocardial revascularization or stroke) were recorded during 24-month follow-up. Results MACCE occurred in 14 patients (12.6%). Patients with MACCE had more diffuse CAD reflected by Syntax score (23.6 vs.14.4 pts., p = 0.02), higher platelet level (242.4 vs. 207.2 × 1000/μl, p = 0.01), higher rate of left main CAD (42.9% vs.5.2%, p < 0.001) and left ventricular ejection fraction < 50% (50% vs.23.7%,p = 0.045). Patients with MACCE had higher pre-procedural (0.68 ± 0.06 vs. 0.62 ± 0.06, p < 0.001) and post-procedural RRI (0.72 ± 0.06 vs.0.66 ± 0.06, p = 0.01), but comparable RPI (p = 0.63 and p = 0.36, respectively). Cox proportional hazards model revealed that pre-procedural RRI (OR = 1.11 per 0.01; p = 0.02) and left main CAD (OR = 5.75, p = 0.002) were the only independent predictors of MACCE occurrence. Receiver operator characteristic curve analysis revealed that preprocedural RRI > 0.645 accurately predicted the composite endpoint (AUC = 0.78, p = 0.001) and identified patients with impaired 24-month prognosis according to Kaplan-Meier curve (log-rank p < 0.001). Conclusions Increased pre-procedural RRI, together with left main CAD, are associated with worse 24-month prognosis in patients with CAD referred for CA.
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Affiliation(s)
- Maciej T Wybraniec
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, 47 Ziołowa St., 40-635, Katowice, Poland.
| | - Maria Bożentowicz-Wikarek
- Department of Pathophysiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | | | - Jerzy Chudek
- Department of Pathophysiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland.,Department of Internal Medicine and Oncological Chemotherapy, Medical University of Silesia, Katowice, Poland
| | - Katarzyna Mizia-Stec
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, 47 Ziołowa St., 40-635, Katowice, Poland
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31
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Akaishi T, Abe M, Miki T, Miki M, Funamizu Y, Ito S, Abe T, Ishii T. Ratio of diastolic to systolic blood pressure represents renal resistive index. J Hum Hypertens 2020; 34:512-519. [PMID: 31586124 PMCID: PMC7367813 DOI: 10.1038/s41371-019-0264-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/12/2019] [Accepted: 08/09/2019] [Indexed: 12/26/2022]
Abstract
Increased intrarenal vascular resistance is suggested to accompany chronic kidney diseases (CKD), which is known to be closely associated with hypertension. However, there are few studies that have examined the relationship between blood pressure and intrarenal vascular resistance. Renal color Doppler ultrasonography is one method that can non-invasively evaluate intrarenal vascular resistance. In this study, we comprehensively studied the correlations between ultrasonic parameters and blood pressure indices to elucidate their relationships. In total, 162 patients with suspected CKD were enrolled for this study. Demographics, blood pressure, blood test, urine test, and renal color Doppler ultrasonography data were obtained. The ratio of diastolic to systolic blood pressure (D/S ratio) and pulse pressure were calculated. Our results indicated strong negative correlations between the renal resistive index (RI) values in all four of the studied kidney regions and the D/S ratio. The RI values also showed significant correlations with diastolic pressure and pulse pressure, but they were weaker. Partial correlation coefficients between pulse pressure, mean arterial pressure, D/S ratio, and RI showed that D/S ratio significantly correlated with RI, but pulse pressure or mean arterial pressure did not. Systolic blood pressure did not correlate with any of the studied ultrasonic values. The negative correlation between RI values and the D/S ratio was still observed in subjects without renal dysfunction or any medications. In conclusion, D/S ratio, rather than pulse pressure or mean arterial pressure, would be the most appropriate index to estimate/calculate/judge intrarenal vascular resistance.
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Affiliation(s)
- Tetsuya Akaishi
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
| | - Michiaki Abe
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan.
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University, Sendai, Japan.
| | - Takashi Miki
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Mika Miki
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Yasuharu Funamizu
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Sadayoshi Ito
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University, Sendai, Japan
| | - Takaaki Abe
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University, Sendai, Japan
| | - Tadashi Ishii
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
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32
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Gigante A, Bruni C, Lepri G, Tesei G, Maestripieri V, Guiducci S, Moggi-Pignone A, Melchiorre D, Boddi M, Bellando-Randone S, Rosato E, Matucci-Cerinic M. The Renal Resistive Index: A New Biomarker for the Follow-up of Vascular Modifications in Systemic Sclerosis. J Rheumatol 2020; 48:241-246. [DOI: 10.3899/jrheum.191101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2020] [Indexed: 01/03/2023]
Abstract
Objective.The aim of the present retrospective observational study was to evaluate the change of Renal Resistive Index (RRI) over time (ΔRRI) and under treatment in patients with systemic sclerosis (SSc) as well as to correlate these changes with disease complications.Methods.Two hundred thirty patients [29 male, median age 57 (IQR 48–67) yrs] were enrolled. At baseline and follow-up (3.43, IQR 2.81–4.45 yrs), we collected the following data: disease variables, nailfold videocapillaroscopy (NVC) pattern, forced vital capacity (FVC), diffusing lung capacity for carbon monoxide (DLCO), systolic pulmonary arterial pressure (sPAP), presence of interstitial lung disease, RRI, evaluation of glomerular filtration rate, and new onset of pulmonary arterial hypertension (PAH).Results.RRI value is high in SSc patients with digital ulcers and anticentromere antibodies, active and late NVC patterns, and limited cutaneous SSc. A significant correlation was observed between ΔRRI and ΔsPAP (R = 0.17, P = 0.02), with statistically higher ΔRRI (0.08 ± 0.02 vs 0.03 ± 0.05, P = 0.04) in patients complicated by PAH onset. No other new-onset complication was associated with ΔRRI. The receiver-operating characteristic curve analysis confirmed the predictive role of ΔRRI in development of new PAH (area under the curve 0.84, 95% CI 0.75–0.93, P = 0.02). In patients with SSc never exposed to sildenafil, ΔRRI was higher (0.04 ± 0.05) compared to both patients exposed to sildenafil during the study period (0.01 ± 0.05, P = 0.03) or in those exposed at the time of baseline evaluation (0.00 ± 0.05, P = 0.01).Conclusion.RRI and its variation in time are a reliable marker of SSc-related vasculopathy, both in renal and extrarenal compartments.
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Bedside Renal Doppler Ultrasonography and Acute Kidney Injury after TAVR. J Clin Med 2020; 9:jcm9040905. [PMID: 32218228 PMCID: PMC7230258 DOI: 10.3390/jcm9040905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 12/24/2022] Open
Abstract
Acute kidney injury (AKI) following transcatheter aortic valve replacement (TAVR) is associated with a dismal prognosis. Elevated renal resistive index (RRI), through renal Doppler ultrasound (RDU) evaluation, has been associated with AKI development and increased systemic arterial stiffness. Our pilot study aimed to investigate the performance of Doppler based RRI to predict AKI and outcomes in TAVR patients. From May 2018 to May 2019, 100 patients with severe aortic stenosis were prospectively enrolled for TAVR and concomitant RDU evaluation at our institution (Nouvel Hôpital Civil, Strasbourg University, France). AKI by serum Creatinine (sCr-AKI) was defined according to the VARC-2 definition and AKI by serum Cystatin C (sCyC-AKI) was defined as an sCyC increase of greater than 15% with baseline value. Concomitant RRI measurements as well as renal and systemic hemodynamic parameters were recorded before, one day, and three days after TAVR. It was found that 10% of patients presented with AKIsCr and AKIsCyC. The whole cohort showed higher baseline RRI values (0.76 ± 0.7) compared to normal known and accepted values. AKIsCyC had significant higher post-procedural RRI one day (Day 1) after TAVR (0.83 ± 0.1 vs. 0.77 ± 0.6, CI 95%, p = 0.005). AUC for AKIsCyC was 0.766 and a RRI cut-off value of ≥ 0.795 had the most optimal sensitivity/specificity (80/62%) combination. By univariate Cox analysis, Mehran Risk Score, higher baseline right atrial pressure at baseline > 0.8 RRI values one day after TAVR (HR 6.5 (95% CI 1.3-32.9; p = 0.021) but not RRI at baseline were significant predictors of AKIsCyC. Importantly, no significant impact of baseline biological parameters, renal or systemic parameters could be demonstrated. Doppler-based RRI can be helpful for the non-invasive assessment of AKI development after TAVR.
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Freccero F, Petrucelli M, Cipone M, Nocera I, Sgorbini M. Doppler evaluation of renal resistivity index in healthy conscious horses and donkeys. PLoS One 2020; 15:e0228741. [PMID: 32027703 PMCID: PMC7004319 DOI: 10.1371/journal.pone.0228741] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 01/21/2020] [Indexed: 01/08/2023] Open
Abstract
The renal resistive index (RRI) is used as a measurement of downstream resistance in arteries. The aim of this study was to assess the RRI of the arcuate arteries by pulsed-wave Doppler ultrasonography in healthy conscious horses and donkeys, and to verify any differences related to age, breed, bodyweight (BW) or body condition (BCS). Thirty-three healthy conscious horses and nine donkeys had their systolic and diastolic flow velocities at the level of the arcuate arteries estimated by pulsed-wave Doppler ultrasound, and the RRI was calculated. The relationship of RRI with age, breed (Trotters vs. other breeds), bodyweight (BW), and body condition score (BCS) were evaluated. PW Doppler evaluation of RRI was successfully applied in most of the horses, but to date not in the donkeys. In horses, median RRI values for the right kidney (0.58±0.006) were statistically higher than for the left (0.51±0.006). For the donkeys the values were comparable. There was no significant difference in RRI between horses younger or older than 15 years, and between breeds in horses. No correlation with age, BW or BCS was found in either horses or donkeys.
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Affiliation(s)
- Francesca Freccero
- Department of Veterinary Medical Sciences, Ozzano dell’Emilia, Bologna, Italy
| | - Marina Petrucelli
- School of Biosciences and Veterinary Medicine, Veterinary Teaching Hospital, Matelica, MC, Italy
| | - Mario Cipone
- Department of Veterinary Medical Sciences, Ozzano dell’Emilia, Bologna, Italy
| | - Irene Nocera
- Department of Veterinary Sciences, Veterinary Teaching Hospital “Mario Modenato”, San Piero a Grado, PI, Italy
| | - Micaela Sgorbini
- Department of Veterinary Sciences, Veterinary Teaching Hospital “Mario Modenato”, San Piero a Grado, PI, Italy
- * E-mail:
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Anile A, Ferrario S, Campanello L, Orban MA, Castiglione G. Renal resistive index: a new reversible tool for the early diagnosis and evaluation of organ perfusion in critically ill patients: a case report. Ultrasound J 2019; 11:23. [PMID: 31598787 PMCID: PMC6785600 DOI: 10.1186/s13089-019-0138-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 09/06/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND We reported a case of early detection of peripheral hypoperfusion trough the evaluation of a new index in intensive care: Renal Doppler Resistive Index (RRI). CASE PRESENTATION We admitted a 76-year-old man who underwent ileostomy and hernioplasty because of an intestinal occlusion due to obstructive strangulated right inguinal hernia. The post-operative period was characterised by hemodynamic instability and he needed an invasive hemodynamic monitoring, administration of vasopressors and continuous renal replacement therapy (CRRT). Then, hemodynamic stability was obtained and vasopressors interrupted. RRI was lower than 0.7. In the eleventh post-operative day, despite stable macrocirculatory parameters, we found increased values of RRI. An abdomen ultrasound first and then a CT scan revealed the presence of bleeding from the previous ileostomy. Hence, the patient immediately underwent another surgical operation. CONCLUSIONS RRI modification appears to be more precocious than any other hemodynamic, microcirculatory and metabolic parameter routinely used. RRI has been widely used to assess renal function in critically ill patients; now, we presume that RRI could represent a common and useful tool to manage target therapy in critical condition.
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Affiliation(s)
- Antonio Anile
- Intensive Care Unit, Ospedale Vittorio Emanuele, AOU Policlinico–Vittorio Emanuele, Catania, Italy
| | - Silvia Ferrario
- Section of Nephrology, Department of Clinical and Experimental Medicine, Policlinico Universitario, University of Catania, Catania, Italy
| | - Lorena Campanello
- School of Anaesthesia and Intensive Care, University Hospital “G. Rodolico”, University of Catania, Catania, Italy
| | - Maria Antonietta Orban
- School of Anaesthesia and Intensive Care, University Hospital “G. Rodolico”, University of Catania, Catania, Italy
| | - Giacomo Castiglione
- Intensive Care Unit, Ospedale Vittorio Emanuele, AOU Policlinico–Vittorio Emanuele, Catania, Italy
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Bellos I, Perrea DN, Kontzoglou K. Renal resistive index as a predictive factor of delayed graft function: A meta-analysis. Transplant Rev (Orlando) 2019; 33:145-153. [DOI: 10.1016/j.trre.2019.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/24/2019] [Accepted: 03/26/2019] [Indexed: 02/08/2023]
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Tüfekçioğlu G, Keşkek ŞÖ, Dilek O, Yilmaz C. Renal resistive index in patients with polycystic ovary syndrome. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:288-292. [PMID: 31166365 PMCID: PMC10522196 DOI: 10.20945/2359-3997000000141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 03/29/2019] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Polycystic ovary syndrome (PCOS) is a common endocrine disorder in women of reproductive age. The renal resistive index (RRI) is a measure of renal arterial resistance to blood flow. The aim of this study was to investigate the renal resistive index levels of patients with PCOS. SUBJECTS AND METHODS A total of 216 women were included in this cross-sectional study. The study group consisted of 109 patients with PCOS, and the control group consisted of 107 healthy subjects. The RRI of all subjects was measured using renal Doppler ultrasonography. RESULTS The patients with PCOS had higher RRI levels in comparison to the healthy subjects (0.64 ± 0.06 vs. 0.57 ± 0.06, p < 0.001). The RRI levels of the patients with PCOS were correlated with systolic blood pressure (p = 0.004, r = 0.268) and with homeostasis model assessment of insulin resistance (HOMA-IR) (p = 0.02, r = 0.216). CONCLUSION In this study, we observed higher RRI levels in patients with PCOS. High RRI levels may be an indicator of cardiovascular and/or cardiovascular-associated diseases in patients with PCOS.
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Affiliation(s)
- Gülsen Tüfekçioğlu
- Numune Training and Research HospitalDepartment of Internal MedicineAdanaTurkeyDepartment of Internal Medicine, Numune Training and Research Hospital, Adana, Turkey
| | - Şakir Özgür Keşkek
- Numune Training and Research HospitalDepartment of Internal MedicineAdanaTurkeyDepartment of Internal Medicine, Numune Training and Research Hospital, Adana, Turkey
| | - Okan Dilek
- Numune Training and Research HospitalDepartment of RadiologyAdanaTurkeyDepartment of Radiology, Numune Training and Research Hospital, Adana, Turkey
| | - Cengiz Yilmaz
- Numune Training and Research HospitalDepartment of RadiologyAdanaTurkeyDepartment of Radiology, Numune Training and Research Hospital, Adana, Turkey
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Oliveira RAG, Mendes PV, Park M, Taniguchi LU. Factors associated with renal Doppler resistive index in critically ill patients: a prospective cohort study. Ann Intensive Care 2019; 9:23. [PMID: 30706172 PMCID: PMC6355884 DOI: 10.1186/s13613-019-0500-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 01/22/2019] [Indexed: 12/13/2022] Open
Abstract
Background The renal Doppler resistive index (renal RI) is a noninvasive tool that has been used to assess renal perfusion in the intensive care unit (ICU) setting. However, many parameters have been described as influential on the values of renal RI. Therefore, we proposed this study to evaluate the variables that could impact renal RI in critically ill patients. Methods A prospective observational study was performed in a 14-bed medical–surgical adult ICU. All consecutive patients admitted to the ICU during the study period were evaluated for eligibility. Renal RI was performed daily until the third day after ICU admission, death, or renal replacement therapy (RRT) requirement. Clinical and blood test data were collected throughout this period. Acute kidney injury (AKI) reversibility was categorized as transient (normalization of renal function within 3 days of AKI onset) or persistent (non-resolution of AKI within 3 days of onset or need for RRT). A linear mixed model was applied to evaluate the factors that could influence renal RI. Results Eighty-three consecutive patients were included. Of these, 65% were male and 50.6% were medical admissions. Mean SAPS 3 was 47 ± 16. Renal RI was significantly different between no-AKI (0.64 ± 0.06), transient AKI (0.64 ± 0.07), and persistent AKI groups (0.70 ± 0.08, p < 0.01). Variables associated with renal RI variations were mean arterial pressure, lactate, age, and persistent AKI (p < 0.05). No association between serum chloride and renal RI was observed (p = 0.868). Conclusions Mean arterial pressure, lactate, age, and type of AKI might influence renal RI in critically ill patients.
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Affiliation(s)
- Raphael A G Oliveira
- Surgical Emergencies and Trauma ICU, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av Enéas de Carvalho Aguiar 255, São Paulo, SP, Postal Code: 05403-000, Brazil.,Hospital Sirio Libanes, Rua Daher Cutait 69, São Paulo, SP, Postal Code: 01308-060, Brazil
| | - Pedro V Mendes
- Emergency Medicine Discipline, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av Enéas de Carvalho Aguiar 255 Sala 5023, São Paulo, SP, Postal Code: 05403-000, Brazil.,Hospital Sirio Libanes, Rua Daher Cutait 69, São Paulo, SP, Postal Code: 01308-060, Brazil
| | - Marcelo Park
- Emergency Medicine Discipline, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av Enéas de Carvalho Aguiar 255 Sala 5023, São Paulo, SP, Postal Code: 05403-000, Brazil
| | - Leandro U Taniguchi
- Emergency Medicine Discipline, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av Enéas de Carvalho Aguiar 255 Sala 5023, São Paulo, SP, Postal Code: 05403-000, Brazil. .,Hospital Sirio Libanes, Rua Daher Cutait 69, São Paulo, SP, Postal Code: 01308-060, Brazil.
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Adar A, Onalan O, Keles H, Cakan F, Kokturk U. Relationship between Aortic Arch Calcification, Detected by Chest X-Ray, and Renal Resistive Index in Patients with Hypertension. Med Princ Pract 2019; 28:133-140. [PMID: 30481749 PMCID: PMC6545912 DOI: 10.1159/000495786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 11/27/2018] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Aortic arch calcification (AAC) is a surrogate marker for arterial stiffness and hypertension-related vascular damage. Renal resistive index (RRI), a renal Doppler ultrasonography parameter, is used to assess renal hemodynamics. In this study, we aimed to evaluate the relationship between RRI and AAC in patients with hypertension. METHODS Patients with hypertension underwent a chest X-ray and re nal Doppler ultrasonography. They were divided into two groups according to RRI (group 1: RRI ≥0.70; group 2: RRI < 0.70). Two examiners, blinded to the findings of RRI, reviewed the AAC in these patients. The kappa value was detected to be 0.781 and a p value < 0.001 was considered significant. RESULTS The study included 289 hypertensive patients (mean age 63.87 ± 11.38 years). In 53.6% (n = 155) of the study subjects, RRI was observed to be ≥0.70. Patients with RRI ≥70 were older and had more prevalent AAC as well as left ventricular hypertrophy. A multiple linear regression analysis was carried out to test whether presence of AAC significantly predicted RRI. The results of the regression analysis indicated that presence of AAC significantly predicted RRI (β = 0.053; p < 0.001). CONCLUSIONS A strong and independent relationship was found between AAC on chest X-ray and RRI in patients with hypertension.
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Affiliation(s)
- Adem Adar
- Department of Cardiology, Faculty of Medicine, Karabük University, Karabük, Turkey,
| | - Orhan Onalan
- Department of Cardiology, Faculty of Medicine, Karabük University, Karabük, Turkey
| | - Hakan Keles
- Department of Radiology, Faculty of Medicine, Karabük University, Karabük, Turkey
| | - Fahri Cakan
- Department of Cardiology, Faculty of Medicine, Karabük University, Karabük, Turkey
| | - Ugur Kokturk
- Department of Cardiology, Faculty of Medicine, Karabük University, Karabük, Turkey
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Di Nicolò P, Granata A. Renal intraparenchymal resistive index: the ultrasonographic answer to many clinical questions. J Nephrol 2018; 32:527-538. [PMID: 30539416 DOI: 10.1007/s40620-018-00567-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/22/2018] [Indexed: 02/06/2023]
Abstract
The use of renal resistive indices (RRIs) for the study of renal microcirculation has in the past been proposed for the identification of renal organ damage or even to specifically identify injury to some areas of the renal parenchyma. Nevertheless, according to the most recent evidences from literature this organ-based conception of RRIs has been proven to be partial and unable to explain the RRIs variations in clinical settings of sepsis or combined organ failure of primitively extrarenal origin or, more generally, the deep connection between RRIs and hemodynamic factors such as compliance and pulsatility of the large vessels. The aim of this review is to explain the physiopathological basis of RRIs determination and the most common interpretative errors in their analysis. Moreover, through a comprehensive vision of these Doppler indices, the traditional and emerging clinical application fields for RRIs are discussed.
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Affiliation(s)
- Pierpaolo Di Nicolò
- Nephrology and Dialysis Unit, "S. Maria della Scaletta" Hospital, Via Montericco n. 4, 40026, Imola, BO, Italy.
| | - Antonio Granata
- Nephrology and Dialysis Unit, "S. Giovanni di Dio" Hospital, Agrigento, Italy
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Laranjinha I, Matias P, Oliveira R, Casqueiro A, Bento MT, Carvalho AP, Adragão T, Jorge C, Bruges M, Birne R, Machado D, Weigert A. The impact of functioning hemodialysis arteriovenous accesses on renal graft perfusion: Results of a pilot study. J Vasc Access 2018; 20:482-487. [DOI: 10.1177/1129729818817248] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Introduction: After a kidney transplant, it is unknown whether the maintenance of a functioning hemodialysis arteriovenous access could have deleterious effects on renal grafts. We hypothesize that maintaining an arteriovenous access can deviate a significant proportion of the cardiac output from the renal graft. The aim of this study was to investigate whether a temporary closure of the arteriovenous access could lead to an increase in graft perfusion. Methods: We conducted a study in 17 kidney-transplanted patients with a functioning arteriovenous access. We evaluated, at baseline and 30 s after compression of the arteriovenous access (access flow occlusion), the hemodynamic parameters and the renal resistive index of the graft by Doppler ultrasound. Results: After arteriovenous access occlusion 82.4% (n = 14) of the patients had a decrease in resistive index. All patients had a decrease in heart rate (67 vs 58 bpm, p < 0.001) and 14 (82.4%) had an increase in mean blood pressure (98.3 vs 101.7 mm Hg, p = 0.044). There was a significant decrease in the resistive index (ΔRI) after the access occlusion (0.68 vs 0.64, p = 0.030). We found a negative correlation in Qa (r2 = −0.55, p = 0.022) with the ΔRI, and Qa was an independent predictor of ΔRI in a model adjusted to pre-occlusion resistive index. Conclusion: Our results showed that temporary occlusion of an arteriovenous access causes a significant decline in renal graft resistive index and this decline is higher with the occlusion of accesses with higher Qa. These results suggest that the maintenance of arteriovenous accesses, mainly those with higher Qa, can decrease renal graft perfusion.
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Affiliation(s)
- Ivo Laranjinha
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Patricia Matias
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
- Nova Medical School – Faculdade de Ciências Médicas, Lisbon, Portugal
| | - Regina Oliveira
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Ana Casqueiro
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Maria Teresa Bento
- Department of Radiology, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Ana Paula Carvalho
- Department of Radiology, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Teresa Adragão
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
- Nova Medical School – Faculdade de Ciências Médicas, Lisbon, Portugal
| | - Cristina Jorge
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Margarida Bruges
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Rita Birne
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - Domingos Machado
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | - André Weigert
- Kidney Transplant Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
- Faculdade de Medicina, University of Lisbon, Lisbon, Portugal
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Intrarenal Flow Alterations During Transition From Euvolemia to Intravascular Volume Expansion in Heart Failure Patients. JACC-HEART FAILURE 2017; 5:672-681. [DOI: 10.1016/j.jchf.2017.05.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 05/04/2017] [Accepted: 05/12/2017] [Indexed: 12/28/2022]
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