Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2069850144', 'doi': 'https://doi.org/10.1016/s1474-5151(02)00013-0', 'title': 'Normal fluctuations in pulmonary artery pressures and cardiac output in patients with severe left ventricular dysfunction', 'display_name': 'Normal fluctuations in pulmonary artery pressures and cardiac output in patients with severe left ventricular dysfunction', 'publication_year': 2002, 'publication_date': '2002-06-01', 'ids': {'openalex': 'https://openalex.org/W2069850144', 'doi': 'https://doi.org/10.1016/s1474-5151(02)00013-0', 'mag': '2069850144', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/14622766'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s1474-5151(02)00013-0', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S178548257', 'display_name': 'European Journal of Cardiovascular Nursing', 'issn_l': '1474-5151', 'issn': ['1474-5151', '1873-1953'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], '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/A5111697952', 'display_name': 'Debra K. Moser', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I143302722', 'display_name': 'University of Kentucky', 'ror': 'https://ror.org/02k3smh20', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I143302722']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Debra K. Moser', 'raw_affiliation_strings': ['College of Nursing, University of Kentucky, Lexington, Ky 40536-0232, USA.'], 'affiliations': [{'raw_affiliation_string': 'College of Nursing, University of Kentucky, Lexington, Ky 40536-0232, USA.', 'institution_ids': ['https://openalex.org/I143302722']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5057152714', 'display_name': 'Susan K. Frazier', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I52357470', 'display_name': 'The Ohio State University', 'ror': 'https://ror.org/00rs6vg23', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I52357470']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Susan K. Frazier', 'raw_affiliation_strings': ['The Ohio State University College of Nursing Columbus OH USA'], 'affiliations': [{'raw_affiliation_string': 'The Ohio State University College of Nursing Columbus OH USA', 'institution_ids': ['https://openalex.org/I52357470']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5111410177', 'display_name': 'Mary A. Woo', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I161318765', 'display_name': 'University of California, Los Angeles', 'ror': 'https://ror.org/046rm7j60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I161318765']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Mary A. Woo', 'raw_affiliation_strings': [' School of Nursing, University of California Los Angeles, Los Angeles, CA, USA'], 'affiliations': [{'raw_affiliation_string': ' School of Nursing, University of California Los Angeles, Los Angeles, CA, USA', 'institution_ids': ['https://openalex.org/I161318765']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5040888372', 'display_name': 'Linda K. Daley', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I52357470', 'display_name': 'The Ohio State University', 'ror': 'https://ror.org/00rs6vg23', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I52357470']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Linda K. Daley', 'raw_affiliation_strings': ['The Ohio State University College of Nursing Columbus OH USA'], 'affiliations': [{'raw_affiliation_string': 'The Ohio State University College of Nursing Columbus OH USA', 'institution_ids': ['https://openalex.org/I52357470']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 3, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 3014, 'currency': 'EUR', 'value_usd': 3250, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.292, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 5, 'citation_normalized_percentile': {'value': 0.598266, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 73, 'max': 75}, 'biblio': {'volume': '1', 'issue': '2', 'first_page': '131', 'last_page': '137'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11700', 'display_name': 'Hemodynamic Monitoring and Therapy', 'score': 0.9999, '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': 0.9999, '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/T10144', 'display_name': 'Blood Pressure and Hypertension Studies', 'score': 0.9976, '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'}}, {'id': 'https://openalex.org/T10821', 'display_name': 'Cardiovascular Function and Risk Factors', 'score': 0.9932, '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/pulmonary-wedge-pressure', 'display_name': 'Pulmonary wedge pressure', 'score': 0.8725801}, {'id': 'https://openalex.org/keywords/cardiac-catheterization', 'display_name': 'Cardiac catheterization', 'score': 0.41379452}], 'concepts': [{'id': 'https://openalex.org/C146556889', 'wikidata': 'https://www.wikidata.org/wiki/Q1414127', 'display_name': 'Pulmonary wedge pressure', 'level': 3, 'score': 0.8725801}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.8319855}, {'id': 'https://openalex.org/C2780940725', 'wikidata': 'https://www.wikidata.org/wiki/Q206280', 'display_name': 'Pulmonary artery', 'level': 2, 'score': 0.81932145}, {'id': 'https://openalex.org/C164705383', 'wikidata': 'https://www.wikidata.org/wiki/Q10379', 'display_name': 'Cardiology', 'level': 1, 'score': 0.8163254}, {'id': 'https://openalex.org/C126322002', 'wikidata': 'https://www.wikidata.org/wiki/Q11180', 'display_name': 'Internal medicine', 'level': 1, 'score': 0.7746212}, {'id': 'https://openalex.org/C139940330', 'wikidata': 'https://www.wikidata.org/wiki/Q596579', 'display_name': 'Cardiac output', 'level': 3, 'score': 0.64089596}, {'id': 'https://openalex.org/C57900726', 'wikidata': 'https://www.wikidata.org/wiki/Q492905', 'display_name': 'Diastole', 'level': 3, 'score': 0.5735217}, {'id': 'https://openalex.org/C78085059', 'wikidata': 'https://www.wikidata.org/wiki/Q641303', 'display_name': 'Ejection fraction', 'level': 3, 'score': 0.50937283}, {'id': 'https://openalex.org/C84393581', 'wikidata': 'https://www.wikidata.org/wiki/Q82642', 'display_name': 'Blood pressure', 'level': 2, 'score': 0.47693485}, {'id': 'https://openalex.org/C178853913', 'wikidata': 'https://www.wikidata.org/wiki/Q1642137', 'display_name': 'Hemodynamics', 'level': 2, 'score': 0.41986024}, {'id': 'https://openalex.org/C2777385415', 'wikidata': 'https://www.wikidata.org/wiki/Q1615191', 'display_name': 'Cardiac catheterization', 'level': 2, 'score': 0.41379452}, {'id': 'https://openalex.org/C2778198053', 'wikidata': 'https://www.wikidata.org/wiki/Q181754', 'display_name': 'Heart failure', 'level': 2, 'score': 0.38541692}], 'mesh': [{'descriptor_ui': 'D001794', 'descriptor_name': 'Blood Pressure', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D002302', 'descriptor_name': 'Cardiac Output', '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': 'D018487', 'descriptor_name': 'Ventricular Dysfunction, Left', 'qualifier_ui': 'Q000503', 'qualifier_name': 'physiopathology', 'is_major_topic': True}, {'descriptor_ui': 'D002395', 'descriptor_name': 'Catecholamines', 'qualifier_ui': 'Q000097', 'qualifier_name': 'blood', 'is_major_topic': False}, {'descriptor_ui': 'D002395', 'descriptor_name': 'Catecholamines', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', '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': 'D008875', 'descriptor_name': 'Middle Aged', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D010101', 'descriptor_name': 'Oxygen Consumption', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D018487', 'descriptor_name': 'Ventricular Dysfunction, Left', 'qualifier_ui': 'Q000145', 'qualifier_name': 'classification', 'is_major_topic': False}, {'descriptor_ui': 'D018487', 'descriptor_name': 'Ventricular Dysfunction, Left', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s1474-5151(02)00013-0', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S178548257', 'display_name': 'European Journal of Cardiovascular Nursing', 'issn_l': '1474-5151', 'issn': ['1474-5151', '1873-1953'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], '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/14622766', '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', 'score': 0.82, 'id': 'https://metadata.un.org/sdg/3'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 12, 'referenced_works': ['https://openalex.org/W109418767', 'https://openalex.org/W112019523', 'https://openalex.org/W121857615', 'https://openalex.org/W1976180110', 'https://openalex.org/W2049556967', 'https://openalex.org/W2135957123', 'https://openalex.org/W2290129659', 'https://openalex.org/W2317977522', 'https://openalex.org/W2318116123', 'https://openalex.org/W2417172880', 'https://openalex.org/W2469087782', 'https://openalex.org/W2779668584'], 'related_works': ['https://openalex.org/W4385716628', 'https://openalex.org/W3033076790', 'https://openalex.org/W2965474825', 'https://openalex.org/W2475222081', 'https://openalex.org/W240673702', 'https://openalex.org/W2062584140', 'https://openalex.org/W2049256125', 'https://openalex.org/W2010738716', 'https://openalex.org/W1964205598', 'https://openalex.org/W1949634191'], 'abstract_inverted_index': {'One': [0], 'barrier': [1], 'to': [2], 'accurate': [3], 'interpretation': [4], 'of': [5, 15, 119], 'changes': [6], 'in': [7, 29, 37, 46, 53, 123, 130, 137, 145, 180, 183], 'hemodynamic': [8], 'pressures': [9, 49, 85], 'and': [10, 32, 50, 82, 144, 170], 'cardiac': [11, 51, 114, 146, 173], 'output': [12, 52, 81, 147, 174], 'is': [13], 'lack': [14], 'data': [16], 'about': [17], 'what': [18], 'constitutes': [19], 'a': [20], 'normal': [21, 27, 44, 178], 'fluctuation.': [22], 'Few': [23], 'investigators': [24], 'have': [25, 34], 'examined': [26], 'fluctuations': [28, 45, 95, 122, 179], 'these': [30, 181], 'parameters': [31, 182], 'none': [33], 'done': [35], 'so': [36], 'patients': [38, 54, 63, 184], 'with': [39, 55, 70, 185], 'left': [40, 56, 71, 186], 'ventricular': [41, 57, 72, 187], 'dysfunction.To': [42], 'describe': [43], 'pulmonary': [47, 83, 99, 104, 109, 124, 131, 138, 154, 160, 166], 'artery': [48, 84, 100, 105, 125, 132, 155, 161], 'dysfunction.Hemodynamically': [58], 'stable': [59], 'advanced': [60], 'heart': [61], 'failure': [62], '(N=39;': [64], '55+/-6': [65], 'years': [66], 'old;': [67], '62%': [68], 'male)': [69], 'dysfunction': [73], '(mean': [74], 'ejection': [75], 'fraction': [76], '22+/-5%)': [77], 'were': [78, 86, 96], 'studied.': [79], 'Cardiac': [80], 'measured': [87], 'every': [88], '15': [89], 'min': [90], 'for': [91, 121, 153, 159, 165, 172], '2': [92], 'h.Mean+/-standard': [93], 'deviation': [94], 'as': [97], 'follows:': [98], 'systolic': [101, 126, 156], 'pressure=7+/-4': [102], 'mmHg;': [103, 108, 113], 'diastolic': [106, 133, 162], 'pressure=6+/-3': [107], 'capillary': [110, 139, 167], 'wedge': [111, 140, 168], 'pressure=5+/-3': [112], 'output=0.7+/-0.3': [115], 'l/min.': [116], 'The': [117], 'coefficient': [118], 'variation': [120], 'pressure': [127, 134, 141], 'was': [128, 135, 142, 148], '6.7%,': [129], '9.3%,': [136], '9.2%,': [143], '7.2%.Values': [149], 'that': [150], 'vary': [151], '<8%': [152], 'pressure,': [157, 163, 169], '<11%': [158], '<12%': [164], '<9%': [171], 'from': [175], 'baseline': [176], 'represent': [177], 'dysfunction.': [188]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2069850144', 'counts_by_year': [{'year': 2022, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 1}], 'updated_date': '2024-12-12T15:43:59.246991', 'created_date': '2016-06-24'}