Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2143313575', 'doi': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'title': 'Survival and Risk Factor Analysis for the Norwood Procedure for Hypoplastic Left Heart Syndrome', 'display_name': 'Survival and Risk Factor Analysis for the Norwood Procedure for Hypoplastic Left Heart Syndrome', 'publication_year': 1997, 'publication_date': '1997-07-01', 'ids': {'openalex': 'https://openalex.org/W2143313575', 'doi': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'mag': '2143313575', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/9230154'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S185186944', 'display_name': 'The American Journal of Cardiology', 'issn_l': '0002-9149', 'issn': ['0002-9149', '1879-1913'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': 'cc-by-nc-nd', 'license_id': 'https://openalex.org/licenses/cc-by-nc-nd', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'hybrid', 'oa_url': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5062806958', 'display_name': 'Jeffrey H. Kern', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2799503643', 'display_name': 'Columbia University Irving Medical Center', 'ror': 'https://ror.org/01esghr10', 'country_code': 'US', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2799503643']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Jeffrey H. Kern', 'raw_affiliation_strings': ['Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA'], 'affiliations': [{'raw_affiliation_string': 'Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA', 'institution_ids': ['https://openalex.org/I2799503643']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5027295350', 'display_name': 'Constance J. Hayes', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2799503643', 'display_name': 'Columbia University Irving Medical Center', 'ror': 'https://ror.org/01esghr10', 'country_code': 'US', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2799503643']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Constance J. Hayes', 'raw_affiliation_strings': ['Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA'], 'affiliations': [{'raw_affiliation_string': 'Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA', 'institution_ids': ['https://openalex.org/I2799503643']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5043642364', 'display_name': 'Robert E. Michler', 'orcid': 'https://orcid.org/0000-0002-7018-4963'}, 'institutions': [{'id': 'https://openalex.org/I2799503643', 'display_name': 'Columbia University Irving Medical Center', 'ror': 'https://ror.org/01esghr10', 'country_code': 'US', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2799503643']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Robert E. Michler', 'raw_affiliation_strings': ['Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA'], 'affiliations': [{'raw_affiliation_string': 'Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA', 'institution_ids': ['https://openalex.org/I2799503643']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109950287', 'display_name': 'Welton M. Gersony', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2799503643', 'display_name': 'Columbia University Irving Medical Center', 'ror': 'https://ror.org/01esghr10', 'country_code': 'US', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2799503643']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Welton M. Gersony', 'raw_affiliation_strings': ['Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA'], 'affiliations': [{'raw_affiliation_string': 'Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA', 'institution_ids': ['https://openalex.org/I2799503643']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5108224081', 'display_name': 'Jan M. Quaegebeur', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2799503643', 'display_name': 'Columbia University Irving Medical Center', 'ror': 'https://ror.org/01esghr10', 'country_code': 'US', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2799503643']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Jan M. Quaegebeur', 'raw_affiliation_strings': ['Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA'], 'affiliations': [{'raw_affiliation_string': 'Departments of Pediatrics and Surgery, Columbia-Presbyterian Medical Center, Columbia University College of Physicians and Surgeons, New York, New YorkUSA', 'institution_ids': ['https://openalex.org/I2799503643']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 3310, 'currency': 'USD', 'value_usd': 3310, 'provenance': 'doaj'}, 'apc_paid': {'value': 3310, 'currency': 'USD', 'value_usd': 3310, 'provenance': 'doaj'}, 'fwci': 7.998, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 195, 'citation_normalized_percentile': {'value': 0.978933, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 98, 'max': 99}, 'biblio': {'volume': '80', 'issue': '2', 'first_page': '170', 'last_page': '174'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10300', 'display_name': 'Congenital Heart Disease Studies', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2713', 'display_name': 'Epidemiology'}, '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/T10300', 'display_name': 'Congenital Heart Disease Studies', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2713', 'display_name': 'Epidemiology'}, '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/T11189', 'display_name': 'Transplantation: Methods and Outcomes', 'score': 0.9941, '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/T11260', 'display_name': 'Tracheal and airway disorders', 'score': 0.9912, 'subfield': {'id': 'https://openalex.org/subfields/2740', 'display_name': 'Pulmonary and Respiratory 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/norwood-procedure', 'display_name': 'Norwood procedure', 'score': 0.9389313}, {'id': 'https://openalex.org/keywords/univariate-analysis', 'display_name': 'Univariate analysis', 'score': 0.5740863}], 'concepts': [{'id': 'https://openalex.org/C2779545397', 'wikidata': 'https://www.wikidata.org/wiki/Q1641399', 'display_name': 'Hypoplastic left heart syndrome', 'level': 3, 'score': 0.9615748}, {'id': 'https://openalex.org/C2776053971', 'wikidata': 'https://www.wikidata.org/wiki/Q2001516', 'display_name': 'Norwood procedure', 'level': 4, 'score': 0.9389313}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.92463994}, {'id': 'https://openalex.org/C2778881276', 'wikidata': 'https://www.wikidata.org/wiki/Q552304', 'display_name': 'Cardiopulmonary bypass', 'level': 2, 'score': 0.6513982}, {'id': 'https://openalex.org/C141071460', 'wikidata': 'https://www.wikidata.org/wiki/Q40821', 'display_name': 'Surgery', 'level': 1, 'score': 0.61511654}, {'id': 'https://openalex.org/C144301174', 'wikidata': 'https://www.wikidata.org/wiki/Q7893852', 'display_name': 'Univariate analysis', 'level': 3, 'score': 0.5740863}, {'id': 'https://openalex.org/C2778789114', 'wikidata': 'https://www.wikidata.org/wiki/Q235007', 'display_name': 'Cardiac surgery', 'level': 2, 'score': 0.43530294}, {'id': 'https://openalex.org/C50440223', 'wikidata': 'https://www.wikidata.org/wiki/Q1475848', 'display_name': 'Risk factor', 'level': 2, 'score': 0.4122108}, {'id': 'https://openalex.org/C164705383', 'wikidata': 'https://www.wikidata.org/wiki/Q10379', 'display_name': 'Cardiology', 'level': 1, 'score': 0.34414202}, {'id': 'https://openalex.org/C38180746', 'wikidata': 'https://www.wikidata.org/wiki/Q1952580', 'display_name': 'Multivariate analysis', 'level': 2, 'score': 0.34129044}, {'id': 'https://openalex.org/C126322002', 'wikidata': 'https://www.wikidata.org/wiki/Q11180', 'display_name': 'Internal medicine', 'level': 1, 'score': 0.29956725}, {'id': 'https://openalex.org/C2780074459', 'wikidata': 'https://www.wikidata.org/wiki/Q389735', 'display_name': 'Heart disease', 'level': 2, 'score': 0.24953097}], 'mesh': [{'descriptor_ui': 'D006348', 'descriptor_name': 'Cardiac Surgical Procedures', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D018636', 'descriptor_name': 'Hypoplastic Left Heart Syndrome', 'qualifier_ui': 'Q000401', 'qualifier_name': 'mortality', 'is_major_topic': True}, {'descriptor_ui': 'D018636', 'descriptor_name': 'Hypoplastic Left Heart Syndrome', 'qualifier_ui': 'Q000601', 'qualifier_name': 'surgery', 'is_major_topic': True}, {'descriptor_ui': 'D006348', 'descriptor_name': 'Cardiac Surgical Procedures', 'qualifier_ui': 'Q000379', 'qualifier_name': 'methods', 'is_major_topic': False}, {'descriptor_ui': 'D006348', 'descriptor_name': 'Cardiac Surgical Procedures', 'qualifier_ui': 'Q000401', 'qualifier_name': 'mortality', 'is_major_topic': False}, {'descriptor_ui': 'D002315', 'descriptor_name': 'Cardiopulmonary Bypass', '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': 'D018610', 'descriptor_name': 'Heart Bypass, Right', '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': 'D018636', 'descriptor_name': 'Hypoplastic Left Heart Syndrome', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007223', 'descriptor_name': 'Infant', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007231', 'descriptor_name': 'Infant, Newborn', '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': 'D010166', 'descriptor_name': 'Palliative Care', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012307', 'descriptor_name': 'Risk Factors', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D016019', 'descriptor_name': 'Survival Analysis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D013997', 'descriptor_name': 'Time Factors', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D016896', 'descriptor_name': 'Treatment Outcome', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S185186944', 'display_name': 'The American Journal of Cardiology', 'issn_l': '0002-9149', 'issn': ['0002-9149', '1879-1913'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': 'cc-by-nc-nd', 'license_id': 'https://openalex.org/licenses/cc-by-nc-nd', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/9230154', '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': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1016/s0002-9149(97)00313-5', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S185186944', 'display_name': 'The American Journal of Cardiology', 'issn_l': '0002-9149', 'issn': ['0002-9149', '1879-1913'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': 'cc-by-nc-nd', 'license_id': 'https://openalex.org/licenses/cc-by-nc-nd', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'score': 0.89, 'display_name': 'Good health and well-being', 'id': 'https://metadata.un.org/sdg/3'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 21, 'referenced_works': ['https://openalex.org/W1226337235', 'https://openalex.org/W180344940', 'https://openalex.org/W1946817661', 'https://openalex.org/W1964065459', 'https://openalex.org/W1977060858', 'https://openalex.org/W1981588763', 'https://openalex.org/W2000575950', 'https://openalex.org/W2004072260', 'https://openalex.org/W2016086765', 'https://openalex.org/W2017692920', 'https://openalex.org/W2023376281', 'https://openalex.org/W2056487478', 'https://openalex.org/W2396579511', 'https://openalex.org/W2400594082', 'https://openalex.org/W2400703722', 'https://openalex.org/W2411197926', 'https://openalex.org/W2414449411', 'https://openalex.org/W2415616221', 'https://openalex.org/W2432806984', 'https://openalex.org/W2470998456', 'https://openalex.org/W4320997742'], 'related_works': ['https://openalex.org/W4385786382', 'https://openalex.org/W2900449241', 'https://openalex.org/W2768182118', 'https://openalex.org/W2474833440', 'https://openalex.org/W2329670102', 'https://openalex.org/W2313239081', 'https://openalex.org/W2171441140', 'https://openalex.org/W2143313575', 'https://openalex.org/W2068517007', 'https://openalex.org/W1966326972'], 'abstract_inverted_index': {'The': [0, 11, 204, 215], 'optimal': [1], 'approach': [2], 'to': [3, 50, 61, 100, 127, 142], 'hypoplastic': [4], 'left': [5], 'heart': [6], 'syndrome': [7], '(HLHS)': [8], 'is': [9, 218, 239], 'controversial.': [10], 'palliative': [12], 'Norwood': [13, 29, 65, 97, 216], 'operation,': [14], 'cardiac': [15], 'transplantation,': [16], 'and': [17, 36, 82, 109, 138, 194, 249], 'no': [18], 'surgical': [19], 'intervention': [20], 'have': [21, 31], 'all': [22], 'been': [23], 'advocated.': [24], 'Centers': [25], 'that': [26], 'perform': [27, 62], 'the': [28, 63, 74, 96, 105, 112, 162, 188, 223], 'operation': [30, 99], 'met': [32], 'with': [33, 55, 59, 122, 179, 225], 'varied': [34], 'results,': [35], 'conflicting': [37], 'reports': [38], 'exist': [39], 'regarding': [40], 'factors': [41, 86, 146, 244], 'predictive': [42], 'of': [43, 104, 111, 176], 'stage': [44, 89], 'I': [45, 98], 'outcome.': [46], 'From': [47], 'January': [48, 51], '1990': [49], '1996,': [52], '67': [53], 'patients': [54, 68, 76, 108, 178, 209], 'HLHS': [56], 'were': [57, 91, 201], 'admitted': [58], 'intent': [60], 'staged': [64], 'procedure.': [66], 'Fourteen': [67], 'did': [69, 118], 'not': [70, 119, 240], 'undergo': [71, 120], 'surgery.': [72], 'In': [73], '53': [75], 'treated': [77, 107], 'surgically,': [78], 'outcome': [79], 'was': [80, 213], 'reviewed,': [81], '10': [83], 'potential': [84], 'risk': [85, 145], 'for': [87, 147, 208, 222], 'first': [88], 'mortality': [90], 'analyzed.': [92], 'Forty-one': [93], 'infants': [94], 'survived': [95, 171, 183], 'hospital': [101, 148], 'discharge': [102], '(77%': [103], 'surgically': [106], '61%': [110], 'entire': [113], 'group,': [114], 'including': [115, 246], 'those': [116], 'who': [117, 167, 210], 'operation)': [121], '6': [123], 'additional': [124], 'deaths': [125], '3': [126], '5': [128], 'months': [129], 'after': [130], 'operation.': [131], 'Univariate': [132], 'analysis': [133, 151], 'showed': [134], 'cardiopulmonary': [135, 154, 235], 'bypass': [136, 155, 236], 'time': [137, 141, 156], 'circulatory': [139], 'arrest': [140], 'be': [143, 230], 'significant': [144, 158], 'mortality.': [149], 'Multivariate': [150], 'revealed': [152], 'only': [153], 'as': [157], '(p': [159, 172, 184], '<0.01).': [160], 'Of': [161], '15': [163], 'prenatally': [164], 'diagnosed': [165], 'newborns': [166], 'underwent': [168, 211], 'surgery,': [169], '11': [170, 177], '=': [173, 185], '0.72).': [174], 'Ten': [175], 'preoperative': [180, 250], 'organ': [181, 251], 'damage': [182], '0.42).': [186], 'Among': [187], '35': [189], 'bidirectional': [190], 'Glenn': [191], '(Norwood': [192, 196], 'II)': [193], 'Fontan': [195], 'III)': [197], 'procedures': [198], 'performed,': [199], 'there': [200], '2': [202], 'deaths.': [203], '5-year': [205], 'actuarial': [206], 'survival': [207, 228], 'operations': [212], '61%.': [214], 'procedure': [217], 'a': [219, 233], 'favorable': [220], 'option': [221], 'infant': [224], 'HLHS.': [226], 'Surgical': [227], 'may': [229], 'affected': [231, 241], 'by': [232, 242], 'prolonged': [234], 'time,': [237], 'but': [238], 'other': [243], 'analyzed,': [245], 'prenatal': [247], 'diagnosis': [248], 'damage.': [252]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2143313575', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 3}, {'year': 2021, 'cited_by_count': 1}, {'year': 2019, 'cited_by_count': 4}, {'year': 2018, 'cited_by_count': 3}, {'year': 2017, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 1}, {'year': 2014, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 5}, {'year': 2012, 'cited_by_count': 5}], 'updated_date': '2024-12-08T22:39:05.010834', 'created_date': '2016-06-24'}