Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1977394260', 'doi': 'https://doi.org/10.1111/j.1475-097x.1982.tb00047.x', 'title': 'Measurement of stroke volume with impedance cardiography', 'display_name': 'Measurement of stroke volume with impedance cardiography', 'publication_year': 1982, 'publication_date': '1982-10-01', 'ids': {'openalex': 'https://openalex.org/W1977394260', 'doi': 'https://doi.org/10.1111/j.1475-097x.1982.tb00047.x', 'mag': '1977394260', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/6754214'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1111/j.1475-097x.1982.tb00047.x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S58807641', 'display_name': 'Clinical Physiology', 'issn_l': '0144-5979', 'issn': ['0144-5979', '1365-2281'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5113989954', 'display_name': 'Ian Milsom', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I66862912', 'display_name': 'Chalmers University of Technology', 'ror': 'https://ror.org/040wg7k59', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I66862912']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Ian Milsom', 'raw_affiliation_strings': ['The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden'], 'affiliations': [{'raw_affiliation_string': 'The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden', 'institution_ids': ['https://openalex.org/I66862912']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5025598670', 'display_name': 'Ramon Sivertsson', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I66862912', 'display_name': 'Chalmers University of Technology', 'ror': 'https://ror.org/040wg7k59', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I66862912']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Ramon Sivertsson', 'raw_affiliation_strings': ['The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden'], 'affiliations': [{'raw_affiliation_string': 'The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden', 'institution_ids': ['https://openalex.org/I66862912']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109118626', 'display_name': 'Björn Biber', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I66862912', 'display_name': 'Chalmers University of Technology', 'ror': 'https://ror.org/040wg7k59', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I66862912']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Björn Biber', 'raw_affiliation_strings': ['The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden'], 'affiliations': [{'raw_affiliation_string': 'The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden', 'institution_ids': ['https://openalex.org/I66862912']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5102153864', 'display_name': 'Torsten Olsson', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I66862912', 'display_name': 'Chalmers University of Technology', 'ror': 'https://ror.org/040wg7k59', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I66862912']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Torsten Olsson', 'raw_affiliation_strings': ['The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden'], 'affiliations': [{'raw_affiliation_string': 'The Departments of Obstetrics and Gynecology, Clinical Physiology and Anesthesiology, University of Göteborg, East Hospital, Göteborg and the Division of Medical Electronics, Chalmers University of Technology, Göteborg, Sweden', 'institution_ids': ['https://openalex.org/I66862912']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 2.362, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 39, 'citation_normalized_percentile': {'value': 0.896684, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 92, 'max': 93}, 'biblio': {'volume': '2', 'issue': '5', 'first_page': '409', 'last_page': '417'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11700', 'display_name': 'Hemodynamic Monitoring and Therapy', 'score': 0.9987, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11700', 'display_name': 'Hemodynamic Monitoring and Therapy', 'score': 0.9987, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10926', 'display_name': 'Peripheral Artery Disease Management', 'score': 0.9554, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10924', 'display_name': 'Cardiovascular Health and Disease Prevention', 'score': 0.9317, 'subfield': {'id': 'https://openalex.org/subfields/2705', 'display_name': 'Cardiology and Cardiovascular Medicine'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/impedance-cardiography', 'display_name': 'Impedance cardiography', 'score': 0.9675559}, {'id': 'https://openalex.org/keywords/stroke', 'display_name': 'Stroke', 'score': 0.49083644}], 'concepts': [{'id': 'https://openalex.org/C2775976690', 'wikidata': 'https://www.wikidata.org/wiki/Q1660241', 'display_name': 'Impedance cardiography', 'level': 5, 'score': 0.9675559}, {'id': 'https://openalex.org/C80461066', 'wikidata': 'https://www.wikidata.org/wiki/Q1698533', 'display_name': 'Stroke volume', 'level': 4, 'score': 0.7261513}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.5411834}, {'id': 'https://openalex.org/C2780645631', 'wikidata': 'https://www.wikidata.org/wiki/Q671554', 'display_name': 'Stroke (engine)', 'level': 2, 'score': 0.49083644}, {'id': 'https://openalex.org/C20556612', 'wikidata': 'https://www.wikidata.org/wiki/Q4469374', 'display_name': 'Volume (thermodynamics)', 'level': 2, 'score': 0.46923903}, {'id': 'https://openalex.org/C164705383', 'wikidata': 'https://www.wikidata.org/wiki/Q10379', 'display_name': 'Cardiology', 'level': 1, 'score': 0.45544696}, {'id': 'https://openalex.org/C126322002', 'wikidata': 'https://www.wikidata.org/wiki/Q11180', 'display_name': 'Internal medicine', 'level': 1, 'score': 0.40459752}, {'id': 'https://openalex.org/C2778198053', 'wikidata': 'https://www.wikidata.org/wiki/Q181754', 'display_name': 'Heart failure', 'level': 2, 'score': 0.12412462}, {'id': 'https://openalex.org/C78085059', 'wikidata': 'https://www.wikidata.org/wiki/Q641303', 'display_name': 'Ejection fraction', 'level': 3, 'score': 0.05540502}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.05240041}, {'id': 'https://openalex.org/C97355855', 'wikidata': 'https://www.wikidata.org/wiki/Q11473', 'display_name': 'Thermodynamics', 'level': 1, 'score': 0.047693282}], 'mesh': [{'descriptor_ui': 'D002302', 'descriptor_name': 'Cardiac Output', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D002307', 'descriptor_name': 'Cardiography, Impedance', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D010992', 'descriptor_name': 'Plethysmography, Impedance', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D013318', 'descriptor_name': 'Stroke Volume', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D000328', 'descriptor_name': 'Adult', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D004395', 'descriptor_name': 'Dye Dilution Technique', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005069', 'descriptor_name': 'Evaluation Studies as Topic', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008297', 'descriptor_name': 'Male', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005082', 'descriptor_name': 'Physical Exertion', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012044', 'descriptor_name': 'Regression Analysis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012146', 'descriptor_name': 'Rest', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1111/j.1475-097x.1982.tb00047.x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S58807641', 'display_name': 'Clinical Physiology', 'issn_l': '0144-5979', 'issn': ['0144-5979', '1365-2281'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/6754214', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'display_name': 'Good health and well-being', 'id': 'https://metadata.un.org/sdg/3', 'score': 0.63}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 17, 'referenced_works': ['https://openalex.org/W1504124995', 'https://openalex.org/W1523547366', 'https://openalex.org/W1532178478', 'https://openalex.org/W1967478697', 'https://openalex.org/W1983479139', 'https://openalex.org/W2006301078', 'https://openalex.org/W2100862527', 'https://openalex.org/W2116887746', 'https://openalex.org/W2127670620', 'https://openalex.org/W2165233349', 'https://openalex.org/W2180252106', 'https://openalex.org/W2181024119', 'https://openalex.org/W2412486514', 'https://openalex.org/W2417738783', 'https://openalex.org/W2436907765', 'https://openalex.org/W2587073892', 'https://openalex.org/W4252901666'], 'related_works': ['https://openalex.org/W2753593048', 'https://openalex.org/W2417419038', 'https://openalex.org/W2405962364', 'https://openalex.org/W2181905415', 'https://openalex.org/W2173638696', 'https://openalex.org/W2126936423', 'https://openalex.org/W2116887746', 'https://openalex.org/W2067631284', 'https://openalex.org/W2032639413', 'https://openalex.org/W1977394260'], 'abstract_inverted_index': {'Summary.': [0], 'Simultaneous': [1], 'determination': [2], 'of': [3, 76, 110, 126, 129, 139], 'stroke': [4, 33, 45, 64, 79, 113, 130], 'volume': [5, 34, 46, 65, 114, 131], 'with': [6], 'impedance': [7, 37, 136, 141], 'cardiography': [8, 38, 97], 'and': [9, 21, 119], 'the': [10, 49, 60, 68, 108, 140], 'dye': [11, 50, 92], 'dilution': [12, 51, 93], 'technique': [13, 142], 'was': [14, 30, 39, 55, 83, 98], 'compared': [15], 'in': [16, 59, 63, 112, 115, 147], '11': [17], 'healthy': [18, 116], 'men': [19], 'before': [20, 118], 'after': [22, 120], 'exercise.': [23, 121], 'The': [24, 74], 'correlation': [25], 'coefficient': [26], 'for': [27, 107], 'all': [28], 'measurements': [29], '0·82.': [31], 'Mean': [32], 'determined': [35, 66], 'by': [36, 48, 67, 91], 'significantly': [40, 85], '(P<0·001)': [41], 'lower': [42], 'than': [43], 'mean': [44, 61], 'calculated': [47], 'technique.': [52], 'However,': [53], 'there': [54], 'no': [56], 'significant': [57], 'difference': [58], 'change': [62], 'two': [69], 'techniques': [70, 146], 'during': [71], 'serial': [72], 'measurements.': [73], 'reproducability': [75], 'single': [77, 88], 'impedance‐determined': [78], 'volumes': [80], '(6·9': [81], 'ml)': [82], 'not': [84, 133], 'different': [86], 'from': [87], 'values': [89, 128], 'obtained': [90], '(7·3': [94], 'ml).': [95], 'Impedance': [96], 'found': [99], 'to': [100], 'be': [101], 'a': [102, 148], 'safe,': [103], 'reliable,': [104], 'non‐invasive': [105], 'method': [106], 'measurement': [109], 'changes': [111], 'individuals': [117], 'At': [122], 'present,': [123], 'direct': [124], 'estimation': [125], 'absolute': [127], 'is': [132, 151], 'recommended': [134], 'using': [135], 'cardiography.': [137], 'Calibration': [138], 'against': [143], 'other': [144], 'established': [145], 'given': [149], 'application': [150], 'necessary.': [152]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1977394260', 'counts_by_year': [{'year': 2021, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 1}], 'updated_date': '2024-12-10T14:19:23.908943', 'created_date': '2016-06-24'}