Comparison of Hemodynamic Consequences of Hand Ventilation Versus Machine Ventilation for Transportation of Post?Operative Pediatric Cardiac Patients

Learning Objective: Hemodynamic monitoring during in?hospital transport of intubated patients is vital; however, no prospective randomized trials have evaluated the hemodynamic consequences of hand versus machine ventilation during transport among pediatric patients� post?cardiac surgery. The authors hypothesized that manual ventilation after pediatric cardiac surgery would alter hemodynamic and arterial blood gas (ABG) parameters during transport compared to mechanical ventilation. Design: A prospective randomized trial. Setting: Tertiary cardiac care hospital. Participants: Pediatric cardiac surgery patients. Materials and Methods: One hundred intubated pediatric patients were randomized to hand or machine ventilation immediately post?cardiac surgery during transport from the operating room to the pediatric post?operative intensive care unit (PICU). Hemodynamic variables, including end?tidal CO2 (ETCO2 ), oxygen saturation, heart rate, systolic blood pressure (SBP), diastolic blood pressure (DBP), peak airway pressure (Ppeak), and mean airway pressure (Pmean), were measured at origin, during transport, and at the destination. ABG was measured before and upon arrival in the PICU, and adverse events were recorded. The Chi?square test and independent t?test were used for comparison of categorical and continuous parameters, respectively. Results and Discussion: The mean transport time was comparable between hand?ventilated (5.77 � 1.46 min) and machine?ventilated (5.96 � 1.19 min) groups (P = 0.47). ETCO2 consistently dropped during transport and after shifting in the hand?ventilated group, with significantly higher ETCO2 excursion than in machine?ventilated patients (P < 0.05). SBP and DBP significantly decreased during transport (at 5 and 6 min intervals) and after shifting in hand?ventilated patients than in the other group (P < 0.05). Additionally, after shifting, a significant increase in Ppeak (P < 0.001), Pmean (P < 0.001), and pH (P < 0.001), and a decrease in pCO2 (P = 0.0072) was observed in hand?ventilated patients than machine?ventilated patients. No adverse event was noted during either mode of ventilation. Conclusion: Hand ventilation leads to more significant variation in ABG and hemodynamic parameters than machine ventilation in pediatric patients during transport post?cardiac surgery. Therefore, using a mechanical ventilator is the preferred method for transporting post?operative pediatric cardiac patients

Measures to Improve In?Hospital Outcomes of Patients Undergoing Surgical Repair for Anomalous Origin of Left Coronary Artery from Pulmonary Artery

Background:Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital anomaly leading to progressive left ventricular dysfunction and mitral regurgitation. We conducted this study to investigate various measures to optimize the outcomes of surgical correction for ALCAPA. Materials And Methods: This was a single?centre, retrospective, observational study including consecutive patients operated for ALCAPA. The main outcomes evaluated were in?hospital mortality, duration of mechanical ventilation, and duration of intensive care unit (ICU) stay. Independent sample t? test and Fisher’s exact test were used for the analysis of continuous and categorical variables respectively. Results: 31 patients underwent surgical correction for ALCAPA during the study duration. The median age was 7.3 months with a range of 21 days to 25 months. All patients underwent coronary re?implantation with the coronary button transfer technique. There was no in?hospital mortality, the mean duration of mechanical ventilation and ICU stay was 117.6 hours and 10.7 days respectively. Age at admission, development of acute kidney injury after surgery, lactate levels at 12? and 24?hours post?surgery, and heart rate at ICU admission and 12?hours post?surgery were significantly associated with mechanical ventilation duration longer than 48 hours. Use of a combination of levosimendan and milrinone and elective intermittent nasal continuous positive airway pressure ventilation after extubation in all patients with severe left ventricular dysfunction were helpful in preventing low cardiac output and need for reintubation post?surgery respectively. Conclusion: Surgical correction for ALCAPA by coronary re?implantation has an excellent short?term outcome. Optimal postoperative management is of utmost importance for achieving the best results.

The effects of coronavirus disease 2019 pandemic on the South African health system: A call to maintain essential health services

South Africa had its first coronavirus disease 2019 (COVID-19) case on 06 March 2020 in an individual who travelled overseas. Since then, cases have constantly increased and the pandemic has taken a toll on the health system. This requires extra mobilisation of resources to curb the disease and overcome financial loses whilst providing social protection to the poor. Assessing the effects of COVID-19 on South African health system is critical to identify challenges and act timely to strike a balance between managing the emergency and maintaining essential health services. We applied the World Health Organization (WHO) health systems framework to assess the effects of COVID-19 on South African health system, and proposed solutions to address the gaps, with a focus on human immunodeficiency virus (HIV) and expanded programme on immunisation (EPI) programmes. The emergence of COVID-19 pandemic has direct impact on the health system, negatively affecting its functionality, as depletion of resources to curb the emergency is eminent. Diversion of health workforce, suspension of services, reduced health-seeking behaviour, unavailability of supplies, deterioration in data monitoring and funding crunches are some of the noted challenges. In such emergencies, the ability to deliver essential services is dependent on baseline capacity of health system. Our approach advocates for close collaboration between essential services and COVID-19 teams to identify priorities, restructure essential services to accommodate physical distancing, promote task shifting at primary level, optimise the use of mobile/web-based technologies for service delivery/training/monitoring and involve private sector and non-health departments to increase management capacity. Strategic responses thus planned can assist in mitigating the adverse effects of the pandemic whilst preventing morbidity and mortality from preventable diseases in the population

Prevalence and risk factors of Helicobacter pylori infections in the patients suffering from acid-peptic disease at tertiary care center, Gujarat, India

Background: Helicobacter pylori (H. pylori) infection is a medical encumber especially in the developing countries, ranging from acute inflammation to malignancy. The study is intended to explore the prevalence of H. pylori infection and also to compute its associated risk factors.Methods: Sixty two (n=62) symptomatic patients attending the tertiary care hospital, were included in the study. Two antral biopsies collected from each patient were subjected to rapid urease test and Gram staining. IgG antibodies were detected by rapid test based on the principle of Immunochromatography. To evaluate the risk factors, various determinants were asked to each patient in the form of questionnaire. Statistical analysis was done using Fisher exact test. P value < 0.05 was considered significant.Results: Prevalence rate of H. pylori infection was 24.19 % (15/62). More than half (53%) of the infected patients had complained of persistent burning abdominal pain. Prevalence rate was found highest in the patients suffering from peptic ulcer disease (66.6%, P=0.0237). Consumption of unfiltered water (P=0.007, Odd Ratio (OR)-1.06), eating spicy food, meat, fish and chili pepper (P=0.052, OR-1.01) was found the major risk factors. Addictive habits of either smoking/alcohol/tobacco (P=0.904) were not associated with infection.Conclusions: Prevalence of H. pylori infection was found low comparatively and was mainly associated with symptom of persistent burning abdominal pain and peptic ulcer. Use of unfiltered water, spicy food, chili pepper and meat undoubtedly increase the risk of acquiring H. pylori infection. Addictive habits were not significantly associated with infection.

Ebstein's anomaly: "The one and a half ventricle heart"

Abstract Objective: Ebstein's anomaly remains a relatively ignored disease. Lying in the 'No Man's land' between congenital and valve surgeons, it largely remains inadequately studied. We report our short-term results of treating it as a 'one and a half ventricle heart' and propose that the true tricuspid annulus (TTA) 'Z' score be used as an objective criterion for estimation of 'functional' right ventricle (RV). Methods: 22 consecutive patients undergoing surgery for Ebstein's anomaly were studied. Echocardiography was performed to assess the type and severity of the disease, tricuspid annular dimension and its 'Z' score. Patients were operated by a modification of the cone repair, with addition of annuloplasty, bidirectional cavopulmonary shunt (BCPS) and right reduction atrioplasty to provide a comprehensive repair. TTA 'Z' score was correlated later with postplication indexed residual RV volume. Results: There was one (4.5%) early and no late postoperative death. There was a significant reduction in tricuspid regurgitation grading (3.40±0.65 to 1.22±0.42, P<0.001). Residual RV volume reduced to 71.96±3.8% of the expected volume and there was a significant negative correlation (rho −0.83) between TTA 'Z' score and indexed residual RV volume. During the follow-up of 20.54±7.62 months, the functional class improved from 2.59±0.7 to 1.34±0.52 (P<0.001). Conclusion: In Ebstein's anomaly, a higher TTA 'Z' score correlates with a lower postplication indexed residual RV volume. Hence, a complete trileaflet repair with offloading of RV by BCPS (when the TTA 'Z' score is >2) is recommended. The short-term outcomes of our technique are promising.

Risk factors for delayed extubation after ventricular septal defect closure: a prospective observational study

Objective: The objective of our study was to determine the feasibility of early extubation and to identify the risk factors for delayed extubation in pediatric patients operated for ventricular septal defect closure. Methods: A prospective, observational study was carried out at our Institute. This study involved consecutive 135 patients undergoing ventricular septal defect closure. Patients were extubated if feasible within six hours after surgery. Based on duration of extubation, patients were divided two groups: Group 1= extubation time ≤ 6 hours, Group 2= extubation time >6 hours. Results: A total of 99 patients were in Group 1 and 36 patients in Group 2. Duration of ventilation was 4.4±0.9 hours in Group 1 and 25.9±24.9 hours in Group 2 (P<0.001). Univariate analysis showed that young age, low weight, low partial pressure of oxygen, trisomy 21, multiple ventricular septal defect, high vasoactive inotropic score, transient heart block and low cardiac output syndrome were associated with delayed extubation. However, regression analysis revealed that only trisomy 21 (OR: 0.248; 95%CI: 0.176-0.701; P=0.001), low cardiac output syndrome (OR: 0.291; 95%CI: 0.267-0.979; P=0.001), multiple ventricular septal defect (OR: 0.243; 95%CI: 0.147-0.606; P=0.002) and vasoactive inotropic score (OR: 0.174 95%CI: 0.002-0.062; P=0.039) are strongest predictors for delayed extubation. Conclusion: Trisomy 21, low cardiac output syndrome, multiple ventricular septal defect and high vasoactive inotropic score are significant risk factors for delay in extubation. Age, weight, pulmonary artery hypertension, size of ventricular septal defect, aortic cross-clamp and cardiopulmonary bypass time did not affect early extubation.

Transverse sternal split: a safe mini-invasive approach for perventricular device closure of ventricular septal defect

Abstract Objective: Perventricular device closure of ventricular septal defect through midline sternotomy avoids the cardiopulmonary bypass, however, lacks the cosmetic advantage. Perventricular device closure of ventricular septal defect with transverse split sternotomy was performed to add the cosmetic advantage of mini-invasive technique. Methods: Thirty-six pediatric patients with mean age 7.14±3.24 months and weight 5.00±0.88 kg were operated for perventricular device closure of ventricular septal defect through transverse split sternotomy in 4th intercostal space under transesophageal echocardiography guidance. In case of failure or complication, surgical closure of ventricular septal defect was performed through the same incision with cervical cannulation of common carotid artery and internal jugular vein for commencement of cardiopulmonary bypass. All the patients were postoperatively followed, and then discharged from hospital due to their surgical outcome, morbidity and mortality. Results: Procedure was successful in 35 patients. Two patients developed transient heart block. Surgical closure of ventricular septal defect was required in one patient. Mean duration of ventilation was 11.83±3.63 hours. Mean intensive care unit and hospital stay were 1.88±0.74 days and 6.58±1.38 days, respectively. There was no in-hospital mortality. A patient died one day after hospital discharge due to arrhythmia. No patients developed wound related, vascular or neurological complication. In a mean follow-up period of 23.3±18.45 months, all 35 patients were doing well without residual defect with regression of pulmonary artery hypertension as seen on transthoracic echocardiography. Conclusion: Transverse split sternotomy incision is a safe and effective alternative to a median sternotomy for perventricular device closure of ventricular septal defect with combined advantage of better cosmetic outcomes and avoidance of cardiopulmonary bypass.

Single-dose lignocaine-based blood cardioplegia in single valve replacement patients

Abstract OBJECTIVE: Myocardial protection is the most important in cardiac surgery. We compared our modified single-dose long-acting lignocaine-based blood cardioplegia with short-acting St Thomas 1 blood cardioplegia in patients undergoing single valve replacement. METHODS: A total of 110 patients who underwent single (aortic or mitral) valve replacement surgery were enrolled. Patients were divided in two groups based on the cardioplegia solution used. In group 1 (56 patients), long-acting lignocaine based-blood cardioplegia solution was administered as a single dose while in group 2 (54 patients), standard St Thomas IB (short-acting blood-based cardioplegia solution) was administered and repeated every 20 minutes. All the patients were compared for preoperative baseline parameters, intraoperative and all the postoperative parameters. RESULTS: We did not find any statistically significant difference in preoperative baseline parameters. Cardiopulmonary bypass time were 73.8±16.5 and 76.4±16.9 minutes (P=0.43) and cross clamp time were 58.9±10.3 and 66.3±11.2 minutes (P=0.23) in group 1 and group 2, respectively. Mean of maximum inotrope score was 6.3±2.52 and 6.1±2.13 (P=0.65) in group 1 and group 2, respectively. We also did not find any statistically significant difference in creatine-phosphokinase-MB (CPK-MB), Troponin-I levels, lactate level and cardiac functions postoperatively. CONCLUSION: This study proves the safety and efficacy of long-acting lignocaine-based single-dose blood cardioplegia compared to the standard short-acting multi-dose blood cardioplegia in patients requiring the single valve replacement. Further studies need to be undertaken to establish this non-inferiority in situations of complex cardiac procedures especially in compromised patients.