Effect of Variation in Arterial Carbon Dioxide Levels on Cerebral-Somatic Oxygenation in Children with Cyanotic Congenital Heart Disease

2018 ◽  
pp. 1-6
Keyword(s):  
Carbon Dioxide ◽  
Congenital Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Infrared Spectroscopy ◽  
Congenital Heart ◽  
Near Infrared ◽  
Cyanotic Congenital Heart Disease ◽  
Anesthesia Induction ◽  
Arterial Blood

Background: Hypocapnia is suggested in decreasing pulmonary vascular resistance in cyanotic congenital heart disease patients undergoing definitive repair. But its effects on cerebral and renal circulation are unclear. Hence the effect of changes in arterial blood carbon dioxide tensions (PaCo2 ) on cerebral (ScO2 %) and renal (SsO2 %) oxygenation indices using Near Infrared spectroscopy (NIRS) is examined. Methods: We did a prospective observational study in sixty-eight children who underwent elective cardiac surgery for various cyanotic congenital heart diseases. PaCo2 , ScO2 % and SsO2 % were obtained before induction of anesthesia, after anesthesia induction at normocapnic or mild hypercapnic ventilation (EtCo2 =40 mmHg) and again at hypocapnic ventilation (EtCo2 =30 mmHg). Regression analysis was done between PaCo2 and NIRS-C/ScO2 % and PaCo2 and NIRS-R/SsO2 % at both EtCo2 40 and 30 mmHg. Repeated measure analysis performed to evaluate the significance of change in NIRS-C and NIRS-R from pre-anesthesia induction to when EtCo2 was 40 and then 30 mmHg post anesthesia induction. Results: With decrease in EtCo2 , PaCo2 (p=0.0001), NIRS-C (p=0.0001) and NIRS-R (p=0.0001) decreased significantly. At EtCo2 of 40 and 30 mmHg, PaCo2 had significant positive correlation with NIRS-C (R2 =0.77, p=0.0001 and R2 =0.92, p=0.0001 respectively) and had insignificant correlation with NIRS-R (R2 =0.03, p=0.12 and R2 =0.008, p=0.46 respectively). Significant changes in NIRS-C {p=0.0001} and NIRS-R {p=0.0001} occurred from pre-induction to when EtCo2 was 40 and then to 30 mmHg. Conclusion: A decrease in NIRS-C and NIRS-R is probably from decreased cerebral and splanchnic blood flow during hypocapnic ventilation, leading to demand supply mismatch. Hypocapnic ventilation in cyanotic children has potential to cause cerebral hypoxia. Abbreviations: CCHD: Cyanotic Congenital Heart Disease; QP: Pulmonary blood flow; Do2 : Oxygen delivery; SpO2 : peripheral pulse oximetry; NIRS: Near Infrared Spectroscopy; NIRS-C/ScO2 %: Regional Cerebral Oxygen saturation; NIRS-R/SsO2 %: Regional Somatic/renal Oxygen saturation; HCT: Hematocrit; ECG: Electrocardiography; CPB: cardiopulmonary bypass; TOF: Tetralogy of fallot; BDG: Bidirectional Glenn Shunt; BT shunt: Blalock Taussig shunt; DORV: Double outlet right ventricle; FiO2 : Inspired oxygen concentration; ABG: Arterial blood gas; PaO2 : Arterial oxygen partial pressure; PaCo2 : Arterial carbon dioxide partial pressure; HR: Heart rate; MAP: Mean Arterial Pressure; CVP: Central Venous Pressure

Prolonged Prostaglandin E1 Infusion in an Infant With Cyanotic Congenital Heart Disease

PEDIATRICS ◽  
1978 ◽  
Vol 61 (4) ◽  
pp. 534-536
Author(s):  
Alan B. Lewis ◽  
Paul R. Lurie
Keyword(s):  
Congenital Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Pulmonary Blood Flow ◽  
Congenital Heart ◽  
Prostaglandin E1 ◽  
Ductus Arteriosus ◽  
Cyanotic Congenital Heart Disease

A small-for-gestational-age premature infant with severe tetralogy of Fallot was treated with prostaglandin E1 to dialate the ductus arteriosus and increase pulmonary blood flow. The infusion was continued for 29 days without complication at which time surgery was performed.

scholarly journals Near-infrared spectroscopy as a predictor of clinical deterioration: a case report of two infants with duct-dependent congenital heart disease

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Mirthe J. Mebius ◽  
Gideon J. du Marchie Sarvaas ◽  
Diana W. Wolthuis ◽  
Beatrijs Bartelds ◽  
Martin C. J. Kneyber ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
Infrared Spectroscopy ◽  
Case Report ◽  
Near Infrared Spectroscopy ◽  
Congenital Heart ◽  
Near Infrared ◽  
Clinical Deterioration

P1796Adults with congenital heart disease have impaired calf muscle oxygenation compared to control subjects

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
C Sandberg ◽  
A G Crenshaw ◽  
G H Elcadi ◽  
C Christersson ◽  
J Hlebowicz ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Exercise Capacity ◽  
Congenital Heart ◽  
Near Infrared ◽  
Venous Occlusion ◽  
Calf Muscle ◽  
Muscle Oxygenation ◽  
Peripheral Muscle

Abstract Background Peripheral muscle factors are presumed to be important contributors to the reduced exercise capacity in congenital heart disease (CHD), but the mechanisms are poorly understood. Purpose To investigate if muscle oxygenation in the calf muscle is impaired in adults with complex CHD in comparison to controls. Method Seventy-four adults with complex CHD (35.6±14.3 years, females n=22) were recruited from centers specialized in adult CHD. Seventy-four age and gender matched subjects were recruited as controls. Muscle oxygenation was successfully determined using near-infrared spectroscopy on the medial portion of m. gastrocnemiusin 63 patients and 67 controls. Measurements were made at rest, during venous occlusion to estimate blood flow (BF – indicated by the slope increase of total haemoglobin, HbT), at the start of isotonic unilateral heel-lifts to exhaustion, and immediately after exercise. Results In comparison to controls, patients had a lower muscle saturation (StO2) at rest, albeit not statistically significant, (66±17% vs. 60±19%, p=0.07), and a lower BF (0.38±0.21 vs. 0.31±0.21 HbTx3.5sec–1, p=0.07). For exercise, compared to the controls, patients had a slower desaturation rate at exercise onset (−11.7±5.8% vs. −7.7±4.3%. StO2x3.5sec–1, p<0.001), and both a slower resaturation rate (6.1±3.8% vs. 3.9±3.7% StO2x3.5sec–1, p=0.002) and a slower half recovery time (16.8±11.1 vs. 28.6±21.2 sec, p<0.001) post exercise. Conclusion The lower muscle oxygenation and blood flow at rest, and the slower oxygenation kinetics during exercise may give insight to the mechanism for the reduced exercise capacity commonly found in adults with complex CHD. This finding may also provide implications for design of rehabilitation programs for these patients.

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