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"Bhat, Nisar A."
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Soil Biological Activity Contributing to Phosphorus Availability in Vertisols under Long-Term Organic and Conventional Agricultural Management
by
Iqbal, Sanjeeda
,
Riar, Amritbir
,
Bhullar, Gurbir S
in
Abiotic factors
,
Agricultural land
,
Agricultural management
2017
Mobilization of unavailable phosphorus (P) to plant available P is a prerequisite to sustain crop productivity. Although most of the agricultural soils have sufficient amounts of phosphorus, low availability of native soil P remains a key limiting factor to increasing crop productivity. Solubilization and mineralization of applied and native P to plant available form is mediated through a number of biological and biochemical processes that are strongly influenced by soil carbon/organic matter, besides other biotic and abiotic factors. Soils rich in organic matter are expected to have higher P availability potentially due to higher biological activity. In conventional agricultural systems mineral fertilizers are used to supply P for plant growth, whereas organic systems largely rely on inputs of organic origin. The soils under organic management are supposed to be biologically more active and thus possess a higher capability to mobilize native or applied P. In this study we compared biological activity in soil of a long-term farming systems comparison field trial in vertisols under a subtropical (semi-arid) environment. Soil samples were collected from plots under 7 years of organic and conventional management at five different time points in soybean (Glycine max) -wheat (Triticum aestivum) crop sequence including the crop growth stages of reproductive significance. Upon analysis of various soil biological properties such as dehydrogenase, β-glucosidase, acid and alkaline phosphatase activities, microbial respiration, substrate induced respiration, soil microbial biomass carbon, organically managed soils were found to be biologically more active particularly at R2 stage in soybean and panicle initiation stage in wheat. We also determined the synergies between these biological parameters by using the methodology of principle component analysis. At all sampling points, P availability in organic and conventional systems was comparable. Our findings clearly indicate that owing to higher biological activity, organic systems possess equal capabilities of supplying P for crop growth as are conventional systems with inputs of mineral P fertilizers.
Journal Article
Primary obstructive megaureter in children; 10 years' experience from a tertiary care center
by
Bhat, Nisar
,
Baba, Ajaz
,
Mufti, Gowhar
in
british association of psediatric urologists
,
Children's furniture
,
differential renal function
2022
Introduction: Primary obstructive megaureter (POM) is a congenital dilatation of the ureter due to an adynamic segment of vesicoureteric junction obstruction. Surgical intervention is needed if nuclear scan shows obstructive curve. We analyzed our data and outcome of conservative and surgical treatment in such cases at our tertiary care hospital.
Materials and Methods: We evaluated all cases of POMs during the study period. Investigations included ultrasonography (USG), voiding cystourethrogram, diethylene pentacetic acid (DTPA) scan, and dimercaptosuccinyle acid scan. In antenatal cases, any pelvic dilatation ≥12 mm after 6 weeks were subjected to reonography. Patients with anterior-posterior pelvic diameter (APPD) ≥12 mm had to undergo DTPA scan to look for DRF and drainage. Follow-up USG was done in all cases of mild-to-moderate hydroureteronephrosis, with APPD <12 at 3 months interval.
Results: A total of 270 megaureters were registered and treated during the study period (2008-2019). The total number of patients included was 50 (64 ureters). The mean age of presentation in these 30 children was 21.78 ± 18.1 months (range 1-72 months) and the mean weeks of gestation in antenatal cases at presentation as megaureter was 24 ± 7 weeks (range 13-37 weeks). The mean weight of babies was 2.72 ± 0.7 g. The duration of follow-up ranged from 16 to 1W12 months. The mean APPD on the affected side was 19.99 ± 10.3 mm (range 11-43 mm). The mean ureteric diameter was 1.67 ± 0.33 mm (range 0.78-2.66 cm). The mean split function of patients with POM was 34.88% ± 11.5% on the affected side. Twenty patients (40%) had spontaneous resolution over a mean time period of 24.1 ± 11.1 months. Thirty patients underwent surgical procedures. In three children, HTN was observed over a mean follow-up period of 3 years.
Conclusion: The babies with POM need a close follow-up. Surgery is indicated in prolonged t½/Tmax on renal scan, function <40% at the initial scan, or >5% split function deterioration in the subsequent renal scan.
Journal Article
Management of intussusception in the era of ultrasound-guided hydrostatic reduction: A 3-year experience from a tertiary care center
2020
Introduction: Ultrasound-guided hydrostatic reduction (HSR) is currently the initial management tool in the treatment of intussusception. HSR is, however, confronted with failures besides there are still a number of patients who primarily undergo surgical intervention for the management of intussusception. We undertook this study to assess the efficacy of HSR and also to look for factors demanding the surgical exploration in patients with intussusception.
Materials and Methods: A total of 215 patients with intussusception from June 2014 to June 2017 were prospectively studied. HSR was carried out in 203 patients, which was successful in 187 and unsuccessful in 16. These two groups were compared using the Student's t-test. Significance was set at P < 0.05. Twelve patients undergoing surgery primarily were also assessed for the factors affecting the decision-making.
Results: HSR was successful in 187 and unsuccessful in 16. The failed group was more likely to have symptoms over 24 h, appearance of crescent, and ≥10-cm length on ultrasonography (USG). Two of these patients had ischemic bowel, two had ileoileal intussusception, and eight had pathological lead points, whereas no obvious cause could be identified in the rest of the four patients. Among the 12 patients who were primarily operated, four patients had peritonitis and other four patients were neonates. Laparoscopic reduction was done in four patients.
Conclusion: HSR is a safe and effective treatment modality for intussusception. However, it is met with higher failure rates in patients with risk factors such as delayed presentation, appearance of crescent on USG, and length >10 cm. The role of HSR is also dubious in situations such as neonatal intussusception, small-bowel intussusception, and multiple intussusceptions and also in preventing the future recurrence. Such patients ought to be managed by laparotomy or where feasible by laparoscopy. Furthermore, before embarking on HSR, peritonitis and bowel ischemia should be ruled out clinically and radiologically. In the suspicious cases of bowel ischemia, USG Doppler may be helpful.
Journal Article
Optimizing pediatric loop colostomy closure: a comparative study of linear stapler and hand-sewn anastomosis
by
Nabi, Ubayer
,
Nisar, Sabina
,
Shah, Waseem Jan
in
Age groups
,
Anastomosis
,
Anastomosis, Surgical - adverse effects
2025
Background
Conventional hand suture techniques for intestinal anastomosis have been standard practice for decades, but the development of staplers has significantly impacted surgical procedures. Staplers, designed to simplify surgery, have been increasingly used in various gastrointestinal surgeries, including pediatric procedures. Colostomy takedown in infants is a commonly performed surgical procedure in pediatric surgery, yet the optimal technique remains debated. This study aims to compare the outcomes of linear stapler anastomosis and hand-sewn anastomosis for elective closure of loop colostomies in children. The hypothesis is that linear stapler anastomosis offers advantages over hand-sewn anastomosis in terms of operative time, recovery, and hospital stay.
Aim
To compare the outcomes of linear stapler and hand-sewn anastomosis in the elective closure of pediatric loop colostomies.
Methods
This prospective, randomized controlled study was conducted at Sher-i-Kashmir Institute of Medical Sciences (SKIMS), Soura, J&K, India, between 2021 and 2023. A total of 70 infants were enrolled, randomly assigned to two groups: Group A (35 infants) underwent SA (Stapled Anastomosis), and Group B (35 infants) underwent HS (Hand-Sewn Anastomosis). Both groups were matched for clinical characteristics. The primary outcomes included operative time and time to return of bowel movements. Secondary outcomes included anastomotic leaks, wound infections, and length of hospital stay. Data analysis was performed using appropriate statistical methods including t-tests and chi-square tests.
Results
The mean age of patients was 5.79 ± 3.23 months in Group A and 4.21 ± 3.13 months in Group B. The mean time to return of bowel movements was significantly shorter in Group A (24.82 ± 6.34 h) compared to Group B (47.56 ± 5.65 h, p = 0.05). Oral feeding was commenced earlier in Group A (2.18 ± 0.39 days) than in Group B (3.16 ± 0.37 days, p < 0.001). Both groups had a follow-up of 1.81 ± 0.98 years, with no cases of anastomotic leakage or small bowel obstruction in either group. Hospital stay was shorter in Group A (53.82 ± 6.34 h) compared to Group B (79.56 ± 15.65 h, p < 0.0003).
Journal Article
Pulmonary Sequestration: Early Diagnosis and Management
2015
Intralobar sequestration is characterized by aberrant formation of nonfunctional lung tissue that has no communication with the bronchial tree and receives systemic arterial blood supply. Failure of earlier diagnosis can lead to recurrent pneumonia, failure to thrive, multiple hospital admissions, and more morbidity. The aim of this case report is to increase the awareness about the lung sequestration, to diagnose and treat it early, so that it is resected before repeated infection, and prevent the morbidity and mortality.
Journal Article
Congenital Midureteric Stricture: Challenges in Diagnosis and Management
by
Rashid, Kumar Abdul
,
Bhat, Nisar A.
,
Hamid, Raashid
in
Case Report
,
Diuretics
,
Medical research
2015
Background. Congenital midureteric stricture (MUS) is a rare malformation. We report our experience with five cases seen over a period of 4 years from 2010 to 2014. Materials and Methods. The study was based on the retrospective analysis of five patients diagnosed as having MUS. Diagnosis was suspected after fetal ultrasonography (USG) in one patient and magnetic resonance urography (MRU) in four patients. Retrograde pyelography (RGP) was performed on three patients. The final diagnosis was confirmed during surgical exploration in all the patients. Results. MRU was found to be a good investigation method. It showed the site of obstruction in the ureter in all instances. Intravenous urography detected proximal ureteric dilatation present in two of the patients. RGP delineates the level of stricture and the course of ureter, as shown in our cases. All patients had significant obstruction on the affected side. Four patients underwent ureteroureterostomy, all of whom had satisfactory results. In one patient, ureteric reimplantation was carried out due to distal small ureteric caliber. Conclusion. This rare entity is often misdiagnosed initially as pelviureteric junction obstruction. MRU is an excellent option for the anatomical location and functional assessment of the involved system. At the time of surgical correction of a ureteral obstruction, RGP is a useful adjunct for delineating the stricture level and morphology.
Journal Article
Bloodless, sutureless circumcision
by
Bhat, Nisar
,
Hamid, Raashid
,
Rashid, Kumar
in
Babies
,
Circumcision
,
Circumcision, Male - instrumentation
2013
Background: W e present our experience of sutureless and bloodless elective circumcision in neonates and infants with Gomco clamp. Patients and Methods: From March 2008 to May 2011, 200 babies with age ranging from 2 weeks to 7 months underwent Gomco circumcision. All patients were given chlorohydrate 50 mg/kg, paracetamol suppository 15 mg/kg, and local anesthesia. Procedure was done in minor operation theatre (OT) and babies were observed for 1 h in recovery room before discharging them home. Results: Two of our patients (1%) required immediate suturing on table after Gomco clamp was removed, five patients (2.5%) were shifted back from the recovery room to minor OT for suture repair and eight patients (4%) required reinforcement of primary dressing to control the minor ooze. There was no other complication. Cosmesis was to the satisfaction of the surgeon as well as the parents. Conclusion: Gomco clamp is a bloodless, sutureless, simple, and safe method of circumcision in newborns and infants. It is cost-effective and can be performed under local anesthesia and sedation with excellent cosmetic results.
Journal Article
Proximal hypospadias with skin-covered shaft of penis and absent urethral plate: An unknown variant and its management
2011
We report a case of proximal hypospadias with an absent urethral plate having intact ventral shaft skin with hooded dorsal prepuce and a good glans groove. Such a variant of hypospadias has not been reported in the literature.
Journal Article
Unilateral MCKD in Children: Experience from a Tertiary Care Paediatric Surgical Centre
2023
Multicystic dysplastic kidney (Mcdk) is a disease diagnosed antenatally with the wide spread use of ultrasonography (USG). Watchful waiting for spontaneous resolution and nephrectomy in selected symptomatic cases is the usual care for such patients. This was a retrospective study between 2008 and 2019. Clinical characteristics and investigations of all antenatal and postnatal cases were noted down. The USG and nuclear scan were used to confirm the diagnosis. The outcome of the watchful observation and surgery was noted down. Data was analysed statistically and results were drawn. A total of 38 patients were evaluated including 20 cases diagnosed antenatally and the remaining 18 patients presented postnatally. In all cases, the diagnosis of Mcdk was confirmed on DMSA scan (at 3 month of life). Average size (largest diameter) was 6.36 ± 2.31 cm (3.9–9 cm). USG showed 17 (44.7%) patients had complete involution over an average time period of 44.49 ± 13.3 months. The mean duration of follow-up 56 ± 14 months (range 1 month to 96 months). Long-term follow-up is required to look for the natural history of the Mcdk. Most MCDK renal tissue involutes. Patient needs close monitoring for hypertension, proteinuria, chronic renal insufficiency and chronic renal insufficiency. Laparoscopic nephrectomy is a good option if parents prefer surgery rather than observation.
Journal Article
Hydatid cyst of liver: Spontaneous rupture and cystocutaneous fistula formation in a child
2012
A case of spontaneous formation of cutaneous fistula from rupture of an infected hydatid cyst of liver in a female child is reported.A case of spontaneous formation of cutaneous fistula from rupture of an infected hydatid cyst of liver in a female child is reported.
Journal Article